Articles | Volume 21, issue 2
https://doi.org/10.5194/hess-21-863-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-21-863-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Monitoring the variations of evapotranspiration due to land use/cover change in a semiarid shrubland
Tingting Gong
State Key Laboratory of Hydroscience and Engineering, Department of
Hydraulic Engineering, Tsinghua University, Beijing, 100084, China
State Key Laboratory of Hydroscience and Engineering, Department of
Hydraulic Engineering, Tsinghua University, Beijing, 100084, China
Dawen Yang
State Key Laboratory of Hydroscience and Engineering, Department of
Hydraulic Engineering, Tsinghua University, Beijing, 100084, China
Yang Jiao
State Key Laboratory of Hydroscience and Engineering, Department of
Hydraulic Engineering, Tsinghua University, Beijing, 100084, China
Hanbo Yang
State Key Laboratory of Hydroscience and Engineering, Department of
Hydraulic Engineering, Tsinghua University, Beijing, 100084, China
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T. T. Gong, H. M. Lei, D. W. Yang, Y. Jiao, and H. B. Yang
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hessd-11-13571-2014, https://doi.org/10.5194/hessd-11-13571-2014, 2014
Revised manuscript not accepted
Wangyipu Li, Zhaoyuan Yao, Yifan Qu, Hanbo Yang, Yang Song, Lisheng Song, Lifeng Wu, and Yaokui Cui
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2024-460, https://doi.org/10.5194/essd-2024-460, 2024
Preprint under review for ESSD
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Due to shortcomings such as extensive data gaps and limited observation durations in current ground-based latent heat flux (LE) datasets, we developed a novel gap-filling and prolongation framework for ground-based LE observations, establishing a benchmark dataset for global evapotranspiration (ET) estimation from 2000 to 2022 across 64 sites at various time scales. This comprehensive dataset can strongly support ET modelling, water-carbon cycle monitoring, and long-term climate change analysis.
Yufen He, Changming Li, and Hanbo Yang
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2024-349, https://doi.org/10.5194/hess-2024-349, 2024
Preprint under review for HESS
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Our research presents an improved method to enhance the understanding and prediction of water flows in rivers and streams, focusing on key runoff components: surface flow, baseflow, and total runoff. Using a streamlined model, the MPS model, we analyzed over 600 catchments in China and the U.S., demonstrating its accuracy in capturing the spatial and temporal variability of these components. This model offers a practical tool for water resource management.
Ziwei Liu, Hanbo Yang, Changming Li, and Taihua Wang
Hydrol. Earth Syst. Sci., 28, 4349–4360, https://doi.org/10.5194/hess-28-4349-2024, https://doi.org/10.5194/hess-28-4349-2024, 2024
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The determination of the coefficient α in the Priestley–Taylor equation is empirical. Based on an atmospheric boundary layer model, we derived a physically clear and parameter-free expression to investigate the behavior of α. We showed that the temperature dominates changes in α and emphasized that the variation of α with temperature should be considered for long-term hydrological predictions. Our works advance and promote the most classical models in the field.
Changming Li, Ziwei Liu, Wencong Yang, Zhuoyi Tu, Juntai Han, Sien Li, and Hanbo Yang
Earth Syst. Sci. Data, 16, 1811–1846, https://doi.org/10.5194/essd-16-1811-2024, https://doi.org/10.5194/essd-16-1811-2024, 2024
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Using a collocation-based approach, we developed a reliable global land evapotranspiration product (CAMELE) by merging multi-source datasets. The CAMELE product outperformed individual input datasets and showed satisfactory performance compared to reference data. It also demonstrated superiority for different plant functional types. Our study provides a promising solution for data fusion. The CAMELE dataset allows for detailed research and a better understanding of land–atmosphere interactions.
Junxia Dou, Sue Grimmond, Shiguang Miao, Bei Huang, Huimin Lei, and Mingshui Liao
Atmos. Chem. Phys., 23, 13143–13166, https://doi.org/10.5194/acp-23-13143-2023, https://doi.org/10.5194/acp-23-13143-2023, 2023
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Multi-timescale variations in surface energy fluxes in a suburb of Beijing are analyzed using 16-month observations. Compared to previous suburban areas, this study site has larger seasonal variability in energy partitioning, and summer and winter Bowen ratios are at the lower and higher end of those at other suburban sites, respectively. Our analysis indicates that precipitation, irrigation, crop/vegetation growth activity, and land use/cover all play critical roles in energy partitioning.
Wencong Yang, Hanbo Yang, Changming Li, Taihua Wang, Ziwei Liu, Qingfang Hu, and Dawen Yang
Hydrol. Earth Syst. Sci., 26, 6427–6441, https://doi.org/10.5194/hess-26-6427-2022, https://doi.org/10.5194/hess-26-6427-2022, 2022
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We produced a daily 0.1° dataset of precipitation, soil moisture, and snow water equivalent in 1981–2017 across China via reconstructions. The dataset used global background data and local on-site data as forcing input and satellite-based data as reconstruction benchmarks. This long-term high-resolution national hydrological dataset is valuable for national investigations of hydrological processes.
Changming Li, Hanbo Yang, Wencong Yang, Ziwei Liu, Yao Jia, Sien Li, and Dawen Yang
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2021-456, https://doi.org/10.5194/essd-2021-456, 2022
Revised manuscript not accepted
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A long-term (1980–2020) global ET product is generated based on a collocation-based merging method. The produced Collocation-Analyzed Multi-source Ensembled Land Evapotranspiration Data (CAMELE) performed well over different vegetation coverage against in-situ data. For global comparison, the spatial distribution of multi-year average and annual variation were in consistent with inputs.The CAMELE products is freely available at https://doi.org/10.5281/zenodo.6283239 (Li et al., 2021).
Yuting Yang, Tim R. McVicar, Dawen Yang, Yongqiang Zhang, Shilong Piao, Shushi Peng, and Hylke E. Beck
Hydrol. Earth Syst. Sci., 25, 3411–3427, https://doi.org/10.5194/hess-25-3411-2021, https://doi.org/10.5194/hess-25-3411-2021, 2021
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This study developed an analytical ecohydrological model that considers three aspects of vegetation response to eCO2 (i.e., stomatal response, LAI response, and rooting depth response) to detect the impact of eCO2 on continental runoff over the past 3 decades globally. Our findings suggest a minor role of eCO2 on the global runoff changes, yet highlight the negative runoff–eCO2 response in semiarid and arid regions which may further threaten the limited water resource there.
Wencong Yang, Hanbo Yang, Dawen Yang, and Aizhong Hou
Hydrol. Earth Syst. Sci., 25, 2705–2720, https://doi.org/10.5194/hess-25-2705-2021, https://doi.org/10.5194/hess-25-2705-2021, 2021
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This study quantified the causal effects of land cover changes and dams on the changes in annual maximum discharges (Q) in 757 catchments of China using panel regressions. We found that a 1 % point increase in urban areas causes a 3.9 % increase in Q, and a 1 unit increase in reservoir index causes a 21.4 % decrease in Q for catchments with no dam before. This study takes the first step to explain the human-caused flood changes on a national scale in China.
Yuting Yang, Shulei Zhang, Michael L. Roderick, Tim R. McVicar, Dawen Yang, Wenbin Liu, and Xiaoyan Li
Hydrol. Earth Syst. Sci., 24, 2921–2930, https://doi.org/10.5194/hess-24-2921-2020, https://doi.org/10.5194/hess-24-2921-2020, 2020
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Many previous studies using offline drought indices report that future warming will increase worldwide drought. However, this contradicts observations/projections of vegetation greening and increased runoff. We resolved this paradox by re-calculating the same drought indices using direct climate model outputs and find no increase in future drought as the climate warms. We also find that accounting for the impact of CO2 on plant transpiration avoids the previous overestimation of drought.
Quan Zhang, Huimin Lei, Dawen Yang, Lihua Xiong, Pan Liu, and Beijing Fang
Biogeosciences, 17, 2245–2262, https://doi.org/10.5194/bg-17-2245-2020, https://doi.org/10.5194/bg-17-2245-2020, 2020
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Research into climate change has been popular over the past few decades. Greenhouse gas emissions are found to be responsible for climate change. Among all the ecosystems, cropland is the main food source for mankind, therefore its carbon cycle and contribution to the global carbon balance interest us. Our evaluation of the typical wheat–maize rotation cropland over the North China Plain shows it is a net CO2 emission to the atmosphere and that emissions will continue to rise in the future.
Xu Shan, Xingdong Li, and Hanbo Yang
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2019-283, https://doi.org/10.5194/hess-2019-283, 2019
Manuscript not accepted for further review
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The Budyko hypothesis has been generally used to quantify how much precipitation transforms into evaporation in one catchment. To approach this hypothesis, previous studies proposed analytical formulas derived based on mathematic reasoning. Differently, this study drew a new derivation for this hypothesis based on fundamental physical principles. It clearly reveals the underlying assumptions in the previous mathematic reasoning and promotes hydrologic understanding on this hypothesis.
Xu Shan, Xindong Li, and Hanbo Yang
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2018-598, https://doi.org/10.5194/hess-2018-598, 2018
Manuscript not accepted for further review
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The Budyko hypothesis has been generally used to quantify how much precipitation transforms into evaporation in one catchment. To approach this hypothesis, previous studies proposed analytical formulas derived based on mathematic reasoning. Differently, this study drew a new derivation for this hypothesis based on fundamental physical principles. It clearly reveals the underlying assumptions in the previous mathematic reasoning and promotes hydrologic understanding on this hypothesis.
Bing Gao, Dawen Yang, Yue Qin, Yuhan Wang, Hongyi Li, Yanlin Zhang, and Tingjun Zhang
The Cryosphere, 12, 657–673, https://doi.org/10.5194/tc-12-657-2018, https://doi.org/10.5194/tc-12-657-2018, 2018
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This study developed a distributed hydrological model coupled with cryospherical processes and applied it in order to simulate the long-term change of frozen ground and its effect on hydrology in the upper Heihe basin. Results showed that the permafrost area shrank by 8.8%, and the frozen depth of seasonally frozen ground decreased. Runoff in cold seasons and annual liquid soil moisture increased due to frozen soils change. Groundwater recharge was enhanced due to the degradation of permafrost.
Zhongwang Chen, Huimin Lei, Hanbo Yang, Dawen Yang, and Yongqiang Cao
Hydrol. Earth Syst. Sci., 21, 2233–2248, https://doi.org/10.5194/hess-21-2233-2017, https://doi.org/10.5194/hess-21-2233-2017, 2017
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The significant climate changes remind us to characterize the hydrological response to it. Based on the long-term observed hydrological and meteorological data in 291 catchments across China, we find a pattern of the response stating that
drier regions are more likely to become drier, whereas wetter regions are more likely to become wetter. We also reveal that the precipitation changes play the most significant role in this process.
Bing Gao, Dawen Yang, Yue Qin, Yuhan Wang, Hongyi Li, Yanlin Zhang, and Tingjun Zhang
The Cryosphere Discuss., https://doi.org/10.5194/tc-2016-289, https://doi.org/10.5194/tc-2016-289, 2017
Revised manuscript not accepted
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This study developed a distributed hydrological model coupled with cryospherical processes and used it to simulate the long-term change of frozen ground and hydrological impacts in the upper Heihe basin. Results showed that the permafrost area shrank by 9.5 %, and frozen depth of seasonally frozen ground decreased at a rate of 4.1 cm/10 yr. Runoff increased in cold season due to the increase in liquid soil moisture. Groundwater recharge was enhanced due to the degradation of permafrost.
Quan Zhang, Hui-Min Lei, Da-Wen Yang, Lihua Xiong, and Beijing Fang
Biogeosciences Discuss., https://doi.org/10.5194/bg-2016-484, https://doi.org/10.5194/bg-2016-484, 2016
Revised manuscript not accepted
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With the increasing concern about global warming, investigating carbon cycle becomes imperative to predict future climate trend. As cropland has great potentials in mitigating carbon emissions, therefore we designed a comprehensive carbon budget assessment in a typical cropland in North China Plain, the results indicate the high groundwater table contributes to carbon sink of this cropland. The conclusion confirms that field management has profound effect on cropland carbon cycle.
Zhongwei Huang, Hanbo Yang, and Dawen Yang
Hydrol. Earth Syst. Sci., 20, 2573–2587, https://doi.org/10.5194/hess-20-2573-2016, https://doi.org/10.5194/hess-20-2573-2016, 2016
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The hydrologic processes have been influenced by different climatic factors. However, the dominant climatic factor driving annual runoff change is still unknown in many catchments in China. By using the climate elasticity method proposed by Yang and Yang (2011), the elasticity of runoff to climatic factors was estimated, and the dominant climatic factors driving annual runoff change were detected at catchment scale over China.
D. Zhang, Z. Cong, G. Ni, D. Yang, and S. Hu
Hydrol. Earth Syst. Sci., 19, 1977–1992, https://doi.org/10.5194/hess-19-1977-2015, https://doi.org/10.5194/hess-19-1977-2015, 2015
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1. Catchments with higher snow ratio tend to have larger runoff index.
2. A modified Budyko method is proposed to illustrate the snow effect on runoff.
3. Snow ratio change has a significant contribution to runoff change, according to historical observations and projected future climate scenarios, especially in northwestern mountainous and northern high-latitude areas of China.
T. T. Gong, H. M. Lei, D. W. Yang, Y. Jiao, and H. B. Yang
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hessd-11-13571-2014, https://doi.org/10.5194/hessd-11-13571-2014, 2014
Revised manuscript not accepted
D. N. Huntzinger, C. Schwalm, A. M. Michalak, K. Schaefer, A. W. King, Y. Wei, A. Jacobson, S. Liu, R. B. Cook, W. M. Post, G. Berthier, D. Hayes, M. Huang, A. Ito, H. Lei, C. Lu, J. Mao, C. H. Peng, S. Peng, B. Poulter, D. Riccuito, X. Shi, H. Tian, W. Wang, N. Zeng, F. Zhao, and Q. Zhu
Geosci. Model Dev., 6, 2121–2133, https://doi.org/10.5194/gmd-6-2121-2013, https://doi.org/10.5194/gmd-6-2121-2013, 2013
Related subject area
Subject: Ecohydrology | Techniques and Approaches: Instruments and observation techniques
Seasonal shifts in depth-to-water uptake by young thinned and overstocked lodgepole pine (Pinus contorta) forests under drought conditions in the Okanagan Valley, British Columbia, Canada
Hydrological and pedological effects of combining Italian alder and blackberries in an agroforestry windbreak system in South Africa
Rainfall redistribution in subtropical Chinese forests changes over 22 years
The influence of hillslope topography on beech water use: a comparative study in two different climates
Real-time biological early-warning system based on freshwater mussels’ valvometry data
Root water uptake patterns are controlled by tree species interactions and soil water variability
The seasonal origins and ages of water provisioning streams and trees in a tropical montane cloud forest
Benefits of a robotic chamber system for determining evapotranspiration in an erosion-affected, heterogeneous cropland
Quantifying river water contributions to the transpiration of riparian trees along a losing river: lessons from stable isotopes and an iteration method
Dye-tracer-aided investigation of xylem water transport velocity distributions
Technical note: Lessons from and best practices for the deployment of the Soil Water Isotope Storage System
Throughfall spatial patterns translate into spatial patterns of soil moisture dynamics – empirical evidence
Routing stemflow water through the soil via preferential flow: a dual-labelling approach with artificial tracers
Improving soil aquifer treatment efficiency using air injection into the subsurface
Dynamic root growth in response to depth-varying soil moisture availability: a rhizobox study
Controls on leaf water hydrogen and oxygen isotopes: a local investigation across seasons and altitude
Resolving seasonal and diel dynamics of non-rainfall water inputs in a Mediterranean ecosystem using lysimeters
The effect of rainfall amount and timing on annual transpiration in a grazed savanna grassland
Inter- and intra-event rainfall partitioning dynamics of two typical xerophytic shrubs in the Loess Plateau of China
A comparative study of plant water extraction methods for isotopic analyses: Scholander-type pressure chamber vs. cryogenic vacuum distillation
Technical note: Conservative storage of water vapour – practical in situ sampling of stable isotopes in tree stems
Xylem water in riparian willow trees (Salix alba) reveals shallow sources of root water uptake by in situ monitoring of stable water isotopes
Technical note: High-accuracy weighing micro-lysimeter system for long-term measurements of non-rainfall water inputs to grasslands
Response of water fluxes and biomass production to climate change in permanent grassland soil ecosystems
Ecohydrological travel times derived from in situ stable water isotope measurements in trees during a semi-controlled pot experiment
Insights into the isotopic mismatch between bulk soil water and Salix matsudana Koidz trunk water from root water stable isotope measurements
The role of dew and radiation fog inputs in the local water cycling of a temperate grassland during dry spells in central Europe
Co-evolution of xylem water and soil water stable isotopic composition in a northern mixed forest biome
Vapor plumes in a tropical wet forest: spotting the invisible evaporation
Rapid reduction in ecosystem productivity caused by flash droughts based on decade-long FLUXNET observations
Throughfall isotopic composition in relation to drop size at the intra-event scale in a Mediterranean Scots pine stand
Rainfall interception and redistribution by a common North American understory and pasture forb, Eupatorium capillifolium (Lam. dogfennel)
In situ measurements of soil and plant water isotopes: a review of approaches, practical considerations and a vision for the future
Coalescence of bacterial groups originating from urban runoffs and artificial infiltration systems among aquifer microbiomes
A combination of soil water extraction methods quantifies the isotopic mixing of waters held at separate tensions in soil
Using water stable isotopes to understand evaporation, moisture stress, and re-wetting in catchment forest and grassland soils of the summer drought of 2018
Partitioning growing season water balance within a forested boreal catchment using sap flux, eddy covariance, and a process-based model
Technical note: Long-term probe misalignment and proposed quality control using the heat pulse method for transpiration estimations
Contribution of understory evaporation in a tropical wet forest during the dry season
Coffee and shade trees show complementary use of soil water in a traditional agroforestry ecosystem
Responses of soil water storage and crop water use efficiency to changing climatic conditions: a lysimeter-based space-for-time approach
Neighbourhood and stand structure affect stemflow generation in a heterogeneous deciduous temperate forest
Technical Note: A global database of the stable isotopic ratios of meteoric and terrestrial waters
Temporally dependent effects of rainfall characteristics on inter- and intra-event branch-scale stemflow variability in two xerophytic shrubs
Dissolved organic carbon driven by rainfall events from a semi-arid catchment during concentrated rainfall season in the Loess Plateau, China
Dew frequency across the US from a network of in situ radiometers
Seasonal origins of soil water used by trees
Forest harvesting impacts on microclimate conditions and sediment transport activities in a humid periglacial environment
Hydrogeochemical controls on brook trout spawning habitats in a coastal stream
Speculations on the application of foliar 13C discrimination to reveal groundwater dependency of vegetation and provide estimates of root depth and rates of groundwater use
Emory C. Ellis, Robert D. Guy, and Xiaohua A. Wei
Hydrol. Earth Syst. Sci., 28, 4667–4684, https://doi.org/10.5194/hess-28-4667-2024, https://doi.org/10.5194/hess-28-4667-2024, 2024
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This study analyzes water-stable isotope composition by analyzing the impact of forest thinning on lodgepole pine depth-to-water uptake and water-use strategies. Lodgepole pine's primary source is spring snowmelt and shifts to rely on deeper soil water to maintain water uptake. There was no effect of decreased stand density on depth-to-water uptake. It will become more critical that we know how much water forests are using and which strategies trees use to sustain their water supply.
Svenja Hoffmeister, Rafael Bohn Reckziegel, Ben du Toit, Sibylle K. Hassler, Florian Kestel, Rebekka Maier, Jonathan P. Sheppard, and Erwin Zehe
Hydrol. Earth Syst. Sci., 28, 3963–3982, https://doi.org/10.5194/hess-28-3963-2024, https://doi.org/10.5194/hess-28-3963-2024, 2024
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We studied a tree–crop ecosystem consisting of a blackberry field and an alder windbreak. In the water-scarce region, irrigation provides sufficient water for plant growth. The windbreak lowers the irrigation amount by reducing wind speed and therefore water transport into the atmosphere. These ecosystems could provide sustainable use of water-scarce landscapes, and we studied the complex interactions by observing several aspects (e.g. soil, nutrients, carbon assimilation, water).
Wanjun Zhang, Thomas Scholten, Steffen Seitz, Qianmei Zhang, Guowei Chu, Linhua Wang, Xin Xiong, and Juxiu Liu
Hydrol. Earth Syst. Sci., 28, 3837–3854, https://doi.org/10.5194/hess-28-3837-2024, https://doi.org/10.5194/hess-28-3837-2024, 2024
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Rainfall input generally controls soil water and plant growth. We focus on rainfall redistribution in succession sequence forests over 22 years. Some changes in rainwater volume and chemistry in the throughfall and stemflow and drivers were investigated. Results show that shifted open rainfall over time and forest factors induced remarkable variability in throughfall and stemflow, which potentially makes forecasting future changes in water resources in the forest ecosystems more difficult.
Ginevra Fabiani, Julian Klaus, and Daniele Penna
Hydrol. Earth Syst. Sci., 28, 2683–2703, https://doi.org/10.5194/hess-28-2683-2024, https://doi.org/10.5194/hess-28-2683-2024, 2024
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There is a limited understanding of the role that topography and climate play in tree water use. Through a cross-site comparison in Luxembourg and Italy, we investigated beech water use along slopes in different climates. Our findings indicate that in landscapes characterized by stronger hydraulic and climatic gradients there is greater spatial variation in tree physiological responses. This highlights how differing growing conditions across landscapes can lead to contrasting tree performances.
Ashkan Pilbala, Nicoletta Riccardi, Nina Benistati, Vanessa Modesto, Donatella Termini, Dario Manca, Augusto Benigni, Cristiano Corradini, Tommaso Lazzarin, Tommaso Moramarco, Luigi Fraccarollo, and Sebastiano Piccolroaz
Hydrol. Earth Syst. Sci., 28, 2297–2311, https://doi.org/10.5194/hess-28-2297-2024, https://doi.org/10.5194/hess-28-2297-2024, 2024
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This study investigates the impact of floods on the aquatic ecosystem using freshwater mussels instrumented with sensors to monitor the opening of their valves. Signal analysis techniques were used to gain insight into their responses in terms of changes in the intensity and frequency of valve opening. The approach used in the study enables the development of real-time monitoring systems for ecological purposes and provides a pathway for practical biological early-warning systems.
Gökben Demir, Andrew J. Guswa, Janett Filipzik, Johanna Clara Metzger, Christine Römermann, and Anke Hildebrandt
Hydrol. Earth Syst. Sci., 28, 1441–1461, https://doi.org/10.5194/hess-28-1441-2024, https://doi.org/10.5194/hess-28-1441-2024, 2024
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Experimental evidence is scarce to understand how the spatial variation in below-canopy precipitation affects root water uptake patterns. Here, we conducted field measurements to investigate drivers of root water uptake patterns while accounting for canopy induced heterogeneity in water input. We found that tree species interactions and soil moisture variability, rather than below-canopy precipitation patterns, control root water uptake patterns in a mixed unmanaged forest.
Emily I. Burt, Gregory R. Goldsmith, Roxanne M. Cruz-de Hoyos, Adan Julian Ccahuana Quispe, and A. Joshua West
Hydrol. Earth Syst. Sci., 27, 4173–4186, https://doi.org/10.5194/hess-27-4173-2023, https://doi.org/10.5194/hess-27-4173-2023, 2023
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When it rains, water remains in the ground for variable amounts of time before it is taken up by plants or becomes streamflow. Understanding how long water stays in the ground before it is taken up by plants or becomes streamflow helps predict what will happen to the water cycle in future climates. Some studies suggest that plants take up water that has been in the ground for a long time; in contrast, we find that plants take up a significant amount of recent rain.
Adrian Dahlmann, Mathias Hoffmann, Gernot Verch, Marten Schmidt, Michael Sommer, Jürgen Augustin, and Maren Dubbert
Hydrol. Earth Syst. Sci., 27, 3851–3873, https://doi.org/10.5194/hess-27-3851-2023, https://doi.org/10.5194/hess-27-3851-2023, 2023
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Evapotranspiration (ET) plays a pivotal role in terrestrial water cycling, returning up to 90 % of precipitation to the atmosphere. We studied impacts of soil type and management on an agroecosystem using an automated system with modern modeling approaches. We modeled ET at high spatial and temporal resolution to highlight differences in heterogeneous soils on an hourly basis. Our results show significant differences in yield and smaller differences in ET overall, impacting water use efficiency.
Yue Li, Ying Ma, Xianfang Song, Qian Zhang, and Lixin Wang
Hydrol. Earth Syst. Sci., 27, 3405–3425, https://doi.org/10.5194/hess-27-3405-2023, https://doi.org/10.5194/hess-27-3405-2023, 2023
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We proposed an iteration method in combination with the MixSIAR model and water isotopes to quantify the river water contribution (RWC) to riparian deep-rooted trees nearby a losing river. River water can indirectly contribute by 20.3 % to water uptake of riparian trees. River recharged riparian groundwater rapidly with a short groundwater residence time (no more than 0.28 d). The RWC to riparian trees was negatively correlated with the water table depth and leaf δ13C in linear functions.
Stefan Seeger and Markus Weiler
Hydrol. Earth Syst. Sci., 27, 3393–3404, https://doi.org/10.5194/hess-27-3393-2023, https://doi.org/10.5194/hess-27-3393-2023, 2023
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This study proposes a low-budget method to quantify the radial distribution of water transport velocities within trees at a high spatial resolution. We observed a wide spread of water transport velocities within a tree stem section, which were on average 3 times faster than the flux velocity. The distribution of transport velocities has implications for studies that use water isotopic signatures to study root water uptake and usually assume uniform or even implicitly infinite velocities.
Rachel E. Havranek, Kathryn Snell, Sebastian Kopf, Brett Davidheiser-Kroll, Valerie Morris, and Bruce Vaughn
Hydrol. Earth Syst. Sci., 27, 2951–2971, https://doi.org/10.5194/hess-27-2951-2023, https://doi.org/10.5194/hess-27-2951-2023, 2023
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We present an automated, field-ready system that collects soil water vapor for stable isotope analysis. This system can be used to determine soil water evolution through time, which is helpful for understanding crop water use, water vapor fluxes to the atmosphere, and geologic proxy development. Our system can automatically collect soil water vapor and then store it for up to 30 d, which allows researchers to collect datasets from historically understudied, remote locations.
Christine Fischer-Bedtke, Johanna Clara Metzger, Gökben Demir, Thomas Wutzler, and Anke Hildebrandt
Hydrol. Earth Syst. Sci., 27, 2899–2918, https://doi.org/10.5194/hess-27-2899-2023, https://doi.org/10.5194/hess-27-2899-2023, 2023
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Canopies change how rain reaches the soil: some spots receive more and others less water. It has long been debated whether this also leads to locally wetter and drier soil. We checked this using measurements of canopy drip and soil moisture. We found that the increase in soil water content after rain was aligned with canopy drip. Independently, the soil storage reaction was dampened in locations prone to drainage, like hig-macroporosity areas, suggesting that canopy drip enhances bypass flow.
Juan Pinos, Markus Flury, Jérôme Latron, and Pilar Llorens
Hydrol. Earth Syst. Sci., 27, 2865–2881, https://doi.org/10.5194/hess-27-2865-2023, https://doi.org/10.5194/hess-27-2865-2023, 2023
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We investigated how stemflow (intercepted rainwater by the tree crown that travels down the stem) infiltrates within the soil. We simulated stemflow, applying coloured water along a tree trunk. Coloured patterns, observed when we excavated the soil after the experiment, were used to view and quantify preferential flow in the soil. We found that stemflow was mainly funnelled belowground along tree roots and macropores. Soil moisture near the trunk was affected both vertically and horizontally.
Ido Arad, Aviya Ziner, Shany Ben Moshe, Noam Weisbrod, and Alex Furman
Hydrol. Earth Syst. Sci., 27, 2509–2522, https://doi.org/10.5194/hess-27-2509-2023, https://doi.org/10.5194/hess-27-2509-2023, 2023
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In a series of long-column experiments, subsurface air injection in soil aquifer treatment (Air-SAT) was tested as an alternative to conventional flooding–drying operation (FDO) in tertiary wastewater (WW) treatment. Our results show that Air-SAT allows for the treatment of increased WW volumes and results in similar or better effluent quality compared with FDO. These results highlight the possibility of using air injection to treat more effluent and alleviate the pressure on existing SAT sites.
Cynthia Maan, Marie-Claire ten Veldhuis, and Bas J. H. van de Wiel
Hydrol. Earth Syst. Sci., 27, 2341–2355, https://doi.org/10.5194/hess-27-2341-2023, https://doi.org/10.5194/hess-27-2341-2023, 2023
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Their flexible growth provides the plants with a strong ability to adapt and develop resilience to droughts and climate change. But this adaptability is badly included in crop and climate models. To model plant development in changing environments, we need to include the survival strategies of plants. Based on experimental data, we set up a simple model for soil-moisture-driven root growth. The model performance suggests that soil moisture is a key parameter determining root growth.
Jinzhao Liu, Chong Jiang, Huawu Wu, Li Guo, Haiwei Zhang, and Ying Zhao
Hydrol. Earth Syst. Sci., 27, 599–612, https://doi.org/10.5194/hess-27-599-2023, https://doi.org/10.5194/hess-27-599-2023, 2023
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What controls leaf water isotopes? We answered the question from two perspectives: respective and dual isotopes. On the one hand, the δ18O and δ2H values of leaf water responded to isotopes of potential source water (i.e., twig water, soil water, and precipitation) and meteorological parameters (i.e., temperature, RH, and precipitation) differently. On the other hand, dual δ18O and δ2H values of leaf water yielded a significant linear relationship associated with altitude and seasonality.
Sinikka Jasmin Paulus, Tarek Sebastian El-Madany, René Orth, Anke Hildebrandt, Thomas Wutzler, Arnaud Carrara, Gerardo Moreno, Oscar Perez-Priego, Olaf Kolle, Markus Reichstein, and Mirco Migliavacca
Hydrol. Earth Syst. Sci., 26, 6263–6287, https://doi.org/10.5194/hess-26-6263-2022, https://doi.org/10.5194/hess-26-6263-2022, 2022
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In this study, we analyze small inputs of water to ecosystems such as fog, dew, and adsorption of vapor. To measure them, we use a scaling system and later test our attribution of different water fluxes to weight changes. We found that they occur frequently during 1 year in a dry summer ecosystem. In each season, a different flux seems dominant, but they all mainly occur during the night. Therefore, they could be important for the biosphere because rain is unevenly distributed over the year.
Matti Räsänen, Mika Aurela, Ville Vakkari, Johan P. Beukes, Juha-Pekka Tuovinen, Pieter G. Van Zyl, Miroslav Josipovic, Stefan J. Siebert, Tuomas Laurila, Markku Kulmala, Lauri Laakso, Janne Rinne, Ram Oren, and Gabriel Katul
Hydrol. Earth Syst. Sci., 26, 5773–5791, https://doi.org/10.5194/hess-26-5773-2022, https://doi.org/10.5194/hess-26-5773-2022, 2022
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The productivity of semiarid grazed grasslands is linked to the variation in rainfall and transpiration. By combining carbon dioxide and water flux measurements, we show that the annual transpiration is nearly constant during wet years while grasses react quickly to dry spells and drought, which reduce transpiration. The planning of annual grazing strategies could consider the early-season rainfall frequency that was linked to the portion of annual transpiration.
Jinxia An, Guangyao Gao, Chuan Yuan, Juan Pinos, and Bojie Fu
Hydrol. Earth Syst. Sci., 26, 3885–3900, https://doi.org/10.5194/hess-26-3885-2022, https://doi.org/10.5194/hess-26-3885-2022, 2022
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An in-depth investigation was conducted of all rainfall-partitioning components at inter- and intra-event scales for two xerophytic shrubs. Inter-event rainfall partitioning amount and percentage depended more on rainfall amount, and rainfall intensity and duration controlled intra-event rainfall-partitioning variables. One shrub has larger branch angle, small branch and smaller canopy area to produce stemflow more efficiently, and the other has larger biomass to intercept more rainfall.
Giulia Zuecco, Anam Amin, Jay Frentress, Michael Engel, Chiara Marchina, Tommaso Anfodillo, Marco Borga, Vinicio Carraro, Francesca Scandellari, Massimo Tagliavini, Damiano Zanotelli, Francesco Comiti, and Daniele Penna
Hydrol. Earth Syst. Sci., 26, 3673–3689, https://doi.org/10.5194/hess-26-3673-2022, https://doi.org/10.5194/hess-26-3673-2022, 2022
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We analyzed the variability in the isotopic composition of plant water extracted by two different methods, i.e., cryogenic vacuum distillation (CVD) and Scholander-type pressure chamber (SPC). Our results indicated that the isotopic composition of plant water extracted by CVD and SPC was significantly different. We concluded that plant water extraction by SPC is not an alternative for CVD as SPC mostly extracts the mobile plant water whereas CVD retrieves all water stored in the sampled tissue.
Ruth-Kristina Magh, Benjamin Gralher, Barbara Herbstritt, Angelika Kübert, Hyungwoo Lim, Tomas Lundmark, and John Marshall
Hydrol. Earth Syst. Sci., 26, 3573–3587, https://doi.org/10.5194/hess-26-3573-2022, https://doi.org/10.5194/hess-26-3573-2022, 2022
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We developed a method of sampling and storing water vapour for isotope analysis, allowing us to infer plant water uptake depth. Measurements can be made at high temporal and spatial resolution even in remote areas. We ensured that all necessary components are easily available, making this method cost efficient and simple to implement. We found our method to perform well in the lab and in the field, enabling it to become a tool for everyone aiming to resolve questions regarding the water cycle.
Jessica Landgraf, Dörthe Tetzlaff, Maren Dubbert, David Dubbert, Aaron Smith, and Chris Soulsby
Hydrol. Earth Syst. Sci., 26, 2073–2092, https://doi.org/10.5194/hess-26-2073-2022, https://doi.org/10.5194/hess-26-2073-2022, 2022
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Using water stable isotopes, we studied from which water source (lake water, stream water, groundwater, or soil water) two willows were taking their water. We monitored the environmental conditions (e.g. air temperature and soil moisture) and the behaviour of the trees (water flow in the stem). We found that the most likely water sources of the willows were the upper soil layers but that there were seasonal dynamics.
Andreas Riedl, Yafei Li, Jon Eugster, Nina Buchmann, and Werner Eugster
Hydrol. Earth Syst. Sci., 26, 91–116, https://doi.org/10.5194/hess-26-91-2022, https://doi.org/10.5194/hess-26-91-2022, 2022
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The aim of this study was to develop a high-accuracy micro-lysimeter system for the quantification of non-rainfall water inputs that overcomes existing drawbacks. The micro-lysimeter system had a high accuracy and allowed us to quantify and distinguish between different types of non-rainfall water inputs, like dew and fog. Non-rainfall water inputs occurred frequently in a Swiss Alpine grassland ecosystem. These water inputs can be an important water source for grasslands during dry periods.
Veronika Forstner, Jannis Groh, Matevz Vremec, Markus Herndl, Harry Vereecken, Horst H. Gerke, Steffen Birk, and Thomas Pütz
Hydrol. Earth Syst. Sci., 25, 6087–6106, https://doi.org/10.5194/hess-25-6087-2021, https://doi.org/10.5194/hess-25-6087-2021, 2021
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Lysimeter-based manipulative and observational experiments were used to identify responses of water fluxes and aboveground biomass (AGB) to climatic change in permanent grassland. Under energy-limited conditions, elevated temperature actual evapotranspiration (ETa) increased, while seepage, dew, and AGB decreased. Elevated CO2 mitigated the effect on ETa. Under water limitation, elevated temperature resulted in reduced ETa, and AGB was negatively correlated with an increasing aridity.
David Mennekes, Michael Rinderer, Stefan Seeger, and Natalie Orlowski
Hydrol. Earth Syst. Sci., 25, 4513–4530, https://doi.org/10.5194/hess-25-4513-2021, https://doi.org/10.5194/hess-25-4513-2021, 2021
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In situ stable water isotope measurements are a recently developed method to measure water movement from the soil through the plant to the atmosphere in high resolution and precision. Here, we present important advantages of the new method in comparison to commonly used measurement methods in an experimental setup. Overall, this method can help to answer research questions such as plant responses to climate change with potentially shifting water availability or temperatures.
Ying Zhao and Li Wang
Hydrol. Earth Syst. Sci., 25, 3975–3989, https://doi.org/10.5194/hess-25-3975-2021, https://doi.org/10.5194/hess-25-3975-2021, 2021
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At our study site during the experimental period, trunk water was only isotopically similar to root water at 100–160 cm depths. The isotopic composition of root water deviated from that of bulk soil water but overlapped with the composition derived for less mobile water. These findings suggest that the isotopic offset between bulk soil water and trunk water was due to the isotopic mismatch between root water and bulk soil water associated with soil water heterogeneity.
Yafei Li, Franziska Aemisegger, Andreas Riedl, Nina Buchmann, and Werner Eugster
Hydrol. Earth Syst. Sci., 25, 2617–2648, https://doi.org/10.5194/hess-25-2617-2021, https://doi.org/10.5194/hess-25-2617-2021, 2021
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During dry spells, dew and fog potentially play an increasingly important role in temperate grasslands. Research on the combined mechanisms of dew and fog inputs to ecosystems and distillation of water vapor from soil to plant surfaces is rare. Our results using stable water isotopes highlight the importance of dew and fog inputs to temperate grasslands during dry spells and reveal the complexity of the local water cycling in such conditions, including different pathways of dew and fog inputs.
Jenna R. Snelgrove, James M. Buttle, Matthew J. Kohn, and Dörthe Tetzlaff
Hydrol. Earth Syst. Sci., 25, 2169–2186, https://doi.org/10.5194/hess-25-2169-2021, https://doi.org/10.5194/hess-25-2169-2021, 2021
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Co-evolution of plant and soil water isotopic composition throughout the growing season in a little-studied northern mixed forest landscape was explored. Marked inter-specific differences in the isotopic composition of xylem water relative to surrounding soil water occurred, despite thin soil cover constraining inter-species differences in rooting depths. We provide potential explanations for differences in temporal evolution of xylem water isotopic composition in this northern landscape.
César Dionisio Jiménez-Rodríguez, Miriam Coenders-Gerrits, Bart Schilperoort, Adriana del Pilar González-Angarita, and Hubert Savenije
Hydrol. Earth Syst. Sci., 25, 619–635, https://doi.org/10.5194/hess-25-619-2021, https://doi.org/10.5194/hess-25-619-2021, 2021
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During rainfall events, evaporation from tropical forests is usually ignored. However, the water retained in the canopy during rainfall increases the evaporation despite the high-humidity conditions. In a tropical wet forest in Costa Rica, it was possible to depict vapor plumes rising from the forest canopy during rainfall. These plumes are evidence of forest evaporation. Also, we identified the conditions that allowed this phenomenon to happen using time-lapse videos and meteorological data.
Miao Zhang and Xing Yuan
Hydrol. Earth Syst. Sci., 24, 5579–5593, https://doi.org/10.5194/hess-24-5579-2020, https://doi.org/10.5194/hess-24-5579-2020, 2020
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We identify flash drought events by considering the decline rate of soil moisture and the drought persistency, and we detect the response of ecosystem carbon and water fluxes to flash droughts based on FLUXNET observations. We find rapid declines in carbon assimilation within 16–24 d of flash drought onset, where savannas show the highest sensitivity. Water use efficiency increases for forests but decreases for herbaceous ecosystems during the recovery stage of flash droughts.
Juan Pinos, Jérôme Latron, Kazuki Nanko, Delphis F. Levia, and Pilar Llorens
Hydrol. Earth Syst. Sci., 24, 4675–4690, https://doi.org/10.5194/hess-24-4675-2020, https://doi.org/10.5194/hess-24-4675-2020, 2020
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Water that drips or splashes from a canopy or passes through it is termed throughfall. This is the first known study to examine interrelationships between throughfall isotopic fractionation and throughfall drop size. Working in a mountainous Scots pine forest, we found that throughfall splash droplets were more prevalent at the onset of rain when vapour pressure deficits were larger. This finding has important implications for water mixing in the canopy and for theories of canopy interception.
D. Alex R. Gordon, Miriam Coenders-Gerrits, Brent A. Sellers, S. M. Moein Sadeghi, and John T. Van Stan II
Hydrol. Earth Syst. Sci., 24, 4587–4599, https://doi.org/10.5194/hess-24-4587-2020, https://doi.org/10.5194/hess-24-4587-2020, 2020
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Where plants exist, rain must pass through canopies to reach soils. We studied how rain interacts with dogfennel – a highly problematic weed that is abundant in pastures, grasslands, rangelands, urban forests and along highways. Dogfennels evaporated large portions (approx. one-fifth) of rain and drained significant (at times > 25 %) rain (and dew) down their stems to their roots (via stemflow). This may explain how dogfennel survives and even invades managed landscapes during extended droughts.
Matthias Beyer, Kathrin Kühnhammer, and Maren Dubbert
Hydrol. Earth Syst. Sci., 24, 4413–4440, https://doi.org/10.5194/hess-24-4413-2020, https://doi.org/10.5194/hess-24-4413-2020, 2020
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Water isotopes are a scientific tool that can be used to identify sources of water and answer questions such as
From which soil depths do plants take up water?, which are highly relevant under changing climatic conditions. In the past, the measurement of water isotopes required tremendous effort. In the last decade methods have advanced and can now be applied in the field. Herein, we review the current status of direct field measurements of water isotopes and discuss future applications.
Yannick Colin, Rayan Bouchali, Laurence Marjolet, Romain Marti, Florian Vautrin, Jérémy Voisin, Emilie Bourgeois, Veronica Rodriguez-Nava, Didier Blaha, Thierry Winiarski, Florian Mermillod-Blondin, and Benoit Cournoyer
Hydrol. Earth Syst. Sci., 24, 4257–4273, https://doi.org/10.5194/hess-24-4257-2020, https://doi.org/10.5194/hess-24-4257-2020, 2020
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Stormwater infiltration systems (SISs) are a source of pollution that may have adverse ecological and sanitary impacts. The incidence of a SIS on the coalescence of microbial communities from runoff waters and aboveground sediments with those of an aquifer was investigated. Aquifer waters showed lower coalescence with aboveground bacterial taxa than aquifer biofilms. These biofilms were colonized by bacterial hydrocarbon degraders and harboured undesirable human-opportunistic pathogens.
William H. Bowers, Jason J. Mercer, Mark S. Pleasants, and David G. Williams
Hydrol. Earth Syst. Sci., 24, 4045–4060, https://doi.org/10.5194/hess-24-4045-2020, https://doi.org/10.5194/hess-24-4045-2020, 2020
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Determining the chemical composition of soil water can help to address questions concerning water transport and use. However, there are many observations of incompletely mixed soil water within various soil pore domains. We applied two contrasting waters to soil samples and then removed water from the soils with three sequential and increasing applied energy steps to assess soil water mixing and equilibration over time. We found it took more than 3 d for soil water to mix and equilibrate.
Lukas Kleine, Doerthe Tetzlaff, Aaron Smith, Hailong Wang, and Chris Soulsby
Hydrol. Earth Syst. Sci., 24, 3737–3752, https://doi.org/10.5194/hess-24-3737-2020, https://doi.org/10.5194/hess-24-3737-2020, 2020
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We investigated the effects of the 2018 drought on water partitioning in a lowland catchment under grassland and forest in north-eastern Germany. Conditions resulted in drying up of streams, yield losses, and lower groundwater levels. Oak trees continued to transpire during the drought. We used stable isotopes to assess the fluxes and ages of water. Sustainable use of resource water requires such understanding of ecohydrological water partitioning.
Nataliia Kozii, Kersti Haahti, Pantana Tor-ngern, Jinshu Chi, Eliza Maher Hasselquist, Hjalmar Laudon, Samuli Launiainen, Ram Oren, Matthias Peichl, Jörgen Wallerman, and Niles J. Hasselquist
Hydrol. Earth Syst. Sci., 24, 2999–3014, https://doi.org/10.5194/hess-24-2999-2020, https://doi.org/10.5194/hess-24-2999-2020, 2020
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The hydrologic cycle is one of the greatest natural processes on Earth and strongly influences both regional and global climate as well as ecosystem functioning. Results from this study clearly show the central role trees play in regulating the water cycle of boreal catchments, implying that forest management impacts on stand structure as well as climate change effects on tree growth are likely to have large cascading effects on the way water moves through boreal forested landscapes.
Elisabeth K. Larsen, Jose Luis Palau, Jose Antonio Valiente, Esteban Chirino, and Juan Bellot
Hydrol. Earth Syst. Sci., 24, 2755–2767, https://doi.org/10.5194/hess-24-2755-2020, https://doi.org/10.5194/hess-24-2755-2020, 2020
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To improve long-term sap flow measurements when using the heat ratio method, this study introduces a dynamic probe misalignment correction method. This work uses sap flow data from four Aleppo pines from April 2017 to December 2018 and shows how a classical probe correction approach declines in accuracy over time. Additionally, it is proposed that a new set of statistical information be recorded along with the sap flow readings to ensure the quality of the raw data.
César Dionisio Jiménez-Rodríguez, Miriam Coenders-Gerrits, Jochen Wenninger, Adriana Gonzalez-Angarita, and Hubert Savenije
Hydrol. Earth Syst. Sci., 24, 2179–2206, https://doi.org/10.5194/hess-24-2179-2020, https://doi.org/10.5194/hess-24-2179-2020, 2020
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Tropical forest ecosystems are able to export a lot of water to the atmosphere by means of evaporation. However, little is known on how their complex structure affects this water flux. This paper analyzes the contribution of three canopy layers in terms of water fluxes and stable water isotope signatures. During the dry season in 2018 the two lower canopy layers provide 20 % of measured evaporation, highlighting the importance of knowing how forest structure can affect the hydrological cycle.
Lyssette Elena Muñoz-Villers, Josie Geris, María Susana Alvarado-Barrientos, Friso Holwerda, and Todd Dawson
Hydrol. Earth Syst. Sci., 24, 1649–1668, https://doi.org/10.5194/hess-24-1649-2020, https://doi.org/10.5194/hess-24-1649-2020, 2020
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Our research showed, consistently, a complementary use of soil water sources between coffee (Coffea Arabica var. typica) plants and shade tree species during the dry and wet seasons in a traditional agroforestry ecosystem in central Veracruz, Mexico. However, more variability in plant water sources was observed among species in the rainy season when higher soil moisture conditions were present and water stress was largely absent.
Jannis Groh, Jan Vanderborght, Thomas Pütz, Hans-Jörg Vogel, Ralf Gründling, Holger Rupp, Mehdi Rahmati, Michael Sommer, Harry Vereecken, and Horst H. Gerke
Hydrol. Earth Syst. Sci., 24, 1211–1225, https://doi.org/10.5194/hess-24-1211-2020, https://doi.org/10.5194/hess-24-1211-2020, 2020
Johanna C. Metzger, Jens Schumacher, Markus Lange, and Anke Hildebrandt
Hydrol. Earth Syst. Sci., 23, 4433–4452, https://doi.org/10.5194/hess-23-4433-2019, https://doi.org/10.5194/hess-23-4433-2019, 2019
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Variation in stemflow (rain water running down the stem) enhances the formation of flow hot spots at the forest floor. Investigating drivers based on detailed measurements, we find that forest structure affects stemflow, both for individual trees and small communities. Densely packed forest patches received more stemflow, due to a higher proportion of woody structure and canopy morphology adjustments, which increase the potential for flow path generation connecting crowns and soil.
Annie L. Putman and Gabriel J. Bowen
Hydrol. Earth Syst. Sci., 23, 4389–4396, https://doi.org/10.5194/hess-23-4389-2019, https://doi.org/10.5194/hess-23-4389-2019, 2019
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We describe an open-access, global database of stable water isotope ratios of various water types. The database facilitates data archiving, supports standardized metadata collection, and decreases the time investment for metanalyses. To promote data discovery and collaboration, the database exposes metadata and data owner contact information for private data but only permits download of public data. Two companion apps support digital data collection and processing and upload of analyzed data.
Chuan Yuan, Guangyao Gao, Bojie Fu, Daming He, Xingwu Duan, and Xiaohua Wei
Hydrol. Earth Syst. Sci., 23, 4077–4095, https://doi.org/10.5194/hess-23-4077-2019, https://doi.org/10.5194/hess-23-4077-2019, 2019
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The stemflow dynamics of two xerophytic shrubs were investigated at the inter- and intra-event scales with high-temporal-resolution data in 54 rain events. Stemflow process was depicted by intensity, duration and time lags to rain events. Funneling ratio was calculated as the ratio of stemflow to rainfall intensities. Rainfall intensity and raindrop momentum controlled stemflow intensity and time lags. Influences of rainfall characteristics on stemflow variables showed temporal dependence.
Linhua Wang, Haw Yen, Xinhui E, Liding Chen, and Yafeng Wang
Hydrol. Earth Syst. Sci., 23, 3141–3153, https://doi.org/10.5194/hess-23-3141-2019, https://doi.org/10.5194/hess-23-3141-2019, 2019
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A high-frequency approach was used to monitor dynamic changes of DOC exported during the concentrated rainfall season in LPR, China. DOC concentration and flux from an ecologically restored catchment in the LPR was investigated. Hysteresis analysis indicated non-linear relationships between DOC concentration and discharge rate in a rainfall event. DOC export is substantially affected by the interaction of rainfall and antecedent conditions for a rainfall event.
François Ritter, Max Berkelhammer, and Daniel Beysens
Hydrol. Earth Syst. Sci., 23, 1179–1197, https://doi.org/10.5194/hess-23-1179-2019, https://doi.org/10.5194/hess-23-1179-2019, 2019
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There currently is no standardized approach for measuring dew formation, making it difficult to compare its frequency and importance across ecosystems. Recently, canopy surface temperature data from 30 sites in the US were measured continuously using in situ infrared radiometers. The analysis presented here provides the first continental-scale standardized synthesis of dew formation. This work provides a basis for considering how changing climate and land use will influence dew formation.
Scott T. Allen, James W. Kirchner, Sabine Braun, Rolf T. W. Siegwolf, and Gregory R. Goldsmith
Hydrol. Earth Syst. Sci., 23, 1199–1210, https://doi.org/10.5194/hess-23-1199-2019, https://doi.org/10.5194/hess-23-1199-2019, 2019
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We used stable isotopes of xylem water to study differences in the seasonal origin of water in more than 900 individual trees from three dominant species in 182 Swiss forested sites. We discovered that midsummer transpiration was mostly supplied by winter precipitation across diverse humid climates. Our findings provide new insights into tree vulnerability to droughts, transport of water (and thus solutes) in soils, and the climatic information conveyed by plant-tissue isotopes.
Fumitoshi Imaizumi, Ryoko Nishii, Kenichi Ueno, and Kousei Kurobe
Hydrol. Earth Syst. Sci., 23, 155–170, https://doi.org/10.5194/hess-23-155-2019, https://doi.org/10.5194/hess-23-155-2019, 2019
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We investigated seasonal changes in sediment transport activities following forest harvesting in a humid periglacial area. Removal of the forest canopy by forest harvesting alters the type of winter soil creep. Winter creep velocity of the ground surface sediment in the harvested site was significantly higher than that in the non-harvested site. Meanwhile, sediment flux on the hillslopes decreased in the harvested site because of capture of sediment by branches of harvested trees.
Martin A. Briggs, Judson W. Harvey, Stephen T. Hurley, Donald O. Rosenberry, Timothy McCobb, Dale Werkema, and John W. Lane Jr.
Hydrol. Earth Syst. Sci., 22, 6383–6398, https://doi.org/10.5194/hess-22-6383-2018, https://doi.org/10.5194/hess-22-6383-2018, 2018
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Brook trout are known to seek out groundwater-discharge zones for spawning. However, in a groundwater-dominated system, we observed trout using a few locations for repeatedly laying eggs. To improve the management of this cold-water species, we wanted to know why these specific groundwater-discharge zones were desirable. Through a combination of geophysical and chemical measurements, we found that locations where the stream intersects the sandy valley wall create oxygen-rich seepage zones.
Rizwana Rumman, James Cleverly, Rachael H. Nolan, Tonantzin Tarin, and Derek Eamus
Hydrol. Earth Syst. Sci., 22, 4875–4889, https://doi.org/10.5194/hess-22-4875-2018, https://doi.org/10.5194/hess-22-4875-2018, 2018
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Groundwater is a significant water resource for humans and for groundwater-dependent vegetation. Several challenges to managing both groundwater resources and dependent vegetation include defining the location of dependent vegetation, the rate of groundwater use, and the depth of roots accessing groundwater. In this study we demonstrate a novel application of measurements of stable isotopes of carbon that can be used to identify the location, the rooting depth, and the rate of groundwater use.
Cited articles
Allen, R. G., Pereira, L. S., Raes, D., and Smith, M.: Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56, FAO, Rome, 300, D05109, 1998.
Baldocchi, D. D. and Wilson, K. B.: Modeling CO2 and water vapor exchange of a temperate broadleaved forest across hourly to decadal time scales, Ecol. Model., 142, 155–184, 2001.
Barr, A. G., Morgenstern, K., Black, T. A., McCaughey, J. H., and Nesic, Z.: Surface energy balance closure by the eddy-covariance method above three boreal forest stands and implications for the measurement of the CO2 flux, Agr. Forest Meteorol., 140, 322–337, 2006.
Chen, S., Chen, J., Lin, G., Zhang, W., Miao, H., Wei, L., Huang, J., and Han, X.: Energy balance and partition in Inner Mongolia steppe ecosystems with different land use types, Agr. Forest Meteorol., 149, 1800–1809, 2009.
Chen, Y., Xia, J. Z., Liang, S. L., Feng, J. M., Fisher, J. B., Li, X., Li, X. L., Liu, S. G., Ma, Z. G., Miyata, A., Mu, Q. Z., Sun, L., Tang, J. W., Wang, K. C., Wen, J., Xue, Y. J., Yu, G. R., Zha, T. G., Zhang, L., Zhang, Q., Zhao, T. B., Zhao, L., and Yuan, W. P.: Comparison of satellite-based evapotranspiration models over terrestrial ecosystems in China, Remote Sens. Environ., 140, 279–293, 2014.
Cornelissen, T., Diekkrüger, B., and Giertz, S.: A comparison of hydrological models for assessing the impact of land use and climate change on discharge in a tropical catchment, J. Hydrol., 498, 221–236, 2013.
Ding, R. S., Kang, S. Z., Zhang, Y. Q., and Du, T. S.: Multi-layer model of water vapor and heat fluxes over maize field in an arid inland region, ShuiLiXueBao, 45, 27–35, 2014 (in Chinese).
Dirmeyer, P. A. and Shukla, J.: Albedo as a modulator of climate response to tropical deforestation, J. Geophys. Res.-Atmos., 99, 20863–20877, 1994.
Dong, X. J. and Zhang, X. S.: Some observations of the adaptions of sandy shrubs to the arid environment in the Mu Us Sandland: leaf water relations and anatomic features, J. Arid Environ., 48, 41–48, 2001.
Dong, X. J., Chen, Z. X., Ala, T. B., Liu, Z. M., and Sideng D. B.: A preliminary study on the water regimes of Sabina Vulgaris in Maowusu sandland, China, Acta Phytoecologica Sinica, 23, 311–319, 1999.
Duchemin, B., Hadria, R., Erraki, S., Boulet, G., Maisongrande, P., Chehbouni, A., Escadafal, R., Ezzahar, J., Hoedjes, J. C. B., Kharrou, M. H., Khabba, S., Mougenot, B., Olioso, A., Rodriguez, J. C., and Simonneaux, V.: Monitoring wheat phenology and irrigation in Central Morocco: On the use of relationships between evapotranspiration, crops coefficients, leaf area index and remotely-sensed vegetation indices, Agr. Water Manage., 79, 1–27, 2006.
Fabeiro, C., de Santa Olalla, F. M., and De Juan, J. A.: Yield and size of deficit irrigated potatoes, Agr. Water Manage., 48, 255–266, 2001.
Falamarzi, Y., Palizdan, N., Huang, Y. F., and Lee, T. S.: Estimating evapotranspiration from temperature and wind speed data using artificial and wavelet neural networks (WNNs), Agr. Water Manage., 140, 26–36, 2014.
Falge, E., Baldocchi, D., Olson, R., Anthoni, P., Aubinet, M., Bernhofer, C., Burba, G., Ceulemans, R., Clement, R., Dolman, H., Granier, A., Gross, P., Grunwald, T., Hollinger, D., Jensen, N. O., Katul, G., Keronen, P., Kowalski, A., Lai, C. T., Law, B. E., Meyers, T., Moncrieff, H., Moors, E., Munger, J. W., Pilegaard, K., Rannik, U., Rebmann, C., Suyker, A., Tenhunen, J., Tu, K., Verma, S., Vesala, T., Wilson, K., and Wofsy, S.: Gap filling strategies for long term energy flux data sets, Agr. Forest Meteorol., 107, 71–77, 2001.
Fernández, R. J.: Do humans create deserts?, Trends Ecol. Evol., 17, 6–7, 2002.
Feddema, J. J. and Freire, S. C.: Soil degradation, global warming and climate impacts, Clim. Res., 17, 209–216, 2001.
Feng, Q.: Preliminary study on the dry sand layer of sandy land in semi-humid region, Arid zone research, 11, 24–26, 1994 (in Chinese).
Franssen, H. J., Stoeckli, R., Lehner, I., Rotenberg, E., and Seneviratne, S. I.: Energy balance closure of eddy-covariance data: A multisite analysis for European FLUXNET stations, Agr. Forest Meteorol., 150, 1553–1567, 2010.
Fu, G. J., Liao, C. Y., and Sun, C. Z.: The effect of soil crust to water movement in maowusu sandland, Journal of northwest forestry university, 25, 7–10, 2010 (in Chinese).
Fulton, J. M.: Relationship of root extension to the soil moisture level required for maximum yield of potatoes, tomatoes and corn, Can. J. Soil Sci., 50, 92–94, 1970.
Gao, S., Pan, X., Cui, Q., Hu, Y., Ye, X., and Dong, M.: Plant Interactions with Changes in Coverage of Biological Soil Crusts and Water Regime in Mu Us Sandland, China, PLoS one, 9, e87713, https://doi.org/10.1371/journal.pone.0087713, 2014.
Ge, Q., Wang, H., and Dai, J.: Phenological response to climate change in China: a meta-analysis, Glob. Change Biol., 21, 265–274, 2015.
Glenn, E. P., Huete, A. R., Nagler, P. L., Hirschboeck, K. K., and Brown, P.: Integrating remote sensing and ground methods to estimate evapotranspiration, Cr. Rev. Plant Sci., 26, 139–168, 2007.
Greene, E. M., Liston, G. E., and Pielke, R. A. S.: Relationships between landscape, snowcover depletion, and regional weather and climate, Hydrol. Process., 13, 2453–2466, 1999.
Gu, Y., Brown, J. F., Verdin, J. P., and Wardlow, B.: A five-year analysis of MODIS NDVI and NDWI for grassland drought assessment over the central Great Plains of the United States, Geophys. Res. Lett., 34, L06407, 2007.
Gutman, G. and Ignatov, A.: The derivation of the green vegetation fraction from NOAA/AVHRR data for use in numerical weather prediction models, Int. J. Remote Sens., 19, 1533–1543, 1998.
Hoshino, A., Tamura, K., Fujimaki, H., Asano, M., Ose, K., and Higashi, T.: Effects of crop abandonment and grazing exclusion on available soil water and other soil properties in a semi-arid Mongolian grassland, Soil Till. Res., 105, 228–235, 2009.
Hou, X. Y., Wang, F. X., Han, J. J., Kang, S. Z., and Feng, S. Y.: Duration of plastic mulch for potato growth under drip irrigation in an arid region of Northwest China, Agr. Forest Meteorol., 150, 115–121, 2010.
Hsieh, C. I., Katul, G., and Chi, T. W.: An approximate analytical model for footprint estimation of scalar fluxes in thermally stratified atmospheric flows, Adv. Water Resour., 23, 765–772, 2000.
Huete, A., Didan, K., Miura, T., Rodriguez, E. P., Gao, X., and Ferreira, L. G.: Overview of the radiometric and biophysical performance of the MODIS vegetation indices, Remote Sens. Environ., 83, 195–213, 2002.
Idso, S. B., Reginato, R. J., Jackson, R. D., Kimball, B. A., and Nakayama, F. S.: The three stages of drying of a field soil, Soil Sci. Soc. Am. J., 38, 831–837, 1974.
Kim, W., Kanae, S., Agata, Y., and Oki, T.: Simulation of potential impacts of land use/cover changes on surface water fluxes in the Chaophraya river basin, Thailand, J. Geophys. Res.-Atmos., 110, D08110, 2005.
Kondoh, A. and Higuchi, A.: Relationship between satellite-derived spectral brightness and evapotranspiration from a grassland, Hydrol. Process., 15, 1761–1770, 2001.
Lei, Z. D., Yang, S. X., and Xie, S. C.: Soil water dynamics, Tsing-Hua University Press, Beijing, 1988 (in Chinese).
Lettermaier, D. P. and Famiglietti, J. S.: Water from on high, Nature, 444, 562–563, 2006.
Leuning, R., Kelliher, F. M., Pury, D. D., and Schulze, E. D.: Leaf nitrogen, photosynthesis, conductance and transpiration: scaling from leaves to canopies, Plant Cell Environ., 18, 1183–1200, 1995.
Li, P. F. and Li, B. G.: Study on some characteristics of evaporation of sand dune and evapotranspiration of grassland in Mu Us desert, Shuili Xuebao, 3, 23–28, 2000 (in Chinese).
Li, S., Kang, S., Zhang, L., Du, T., Tong, L., Ding, R., Guo, W., Zhao, P., Chen, X., and Xiao, H.: Ecosystem water use efficiency for a sparse vineyard in arid northwest China, Agr. Water Manage., 148, 24–33, 2015.
Li, X. L., Gao, J., Brierley, G., Qiao, Y. M., Zhang, J., and Yang, Y. W.: Rangeland degradation on the Qinghai-Tibet plateau: Implications for rehabilitation, Land Degrad. Dev., 24, 72–80, 2013.
Li, Z., Liu, W. Z., Zhang, X. C., and Zheng, F. L.: Impacts of land use change and climate variability on hydrology in an agricultural catchment on the Loess Plateau of China, J. Hydrol., 377, 35–42, 2009.
Liu, C., Zhang, X., and Zhang, Y.: Determination of daily evaporation and evapotranspiration of winter wheat and maize by large-scale weighing lysimeter and micro-lysimeter, Agr. Forest Meteorol., 111, 109–120, 2002.
Liu, F.: Point pattern of Artemisia ordosica and the impact to soil crust thickness in Mu Us Sandland, Mater Thesis of Beijing Forestry University, 2012 (in Chinese).
Liu, X. P., Zhang, T. H., Zhao, H. L., He, Y. H., Yun, J. Y., and Li, Y. Q.: Influences of dry sand bed thickness on soil moisture evaporation in mobile dune, Arid land geography, 29, 523–526, 2006 (in Chinese).
Liu, Z. D., Xiao, J. F., and Yu, X. Q.: Effects of different soil moisture treatments on morphological index, water consumption and yield of potatoes, China Rural Water and Hydropower, 8, 1–7, 2010.
Lo Seen Chong, D., Mougin, E., and Gastellu-Etchegorry, J. P.: Relating the global vegetation index to net primary productivity and actual evapotranspiration over Africa, Int. J. Remote Sens., 14, 1517–1546, 1993.
Loukas, A., Vasiliades, L., Domenikiotis, C., and Dalezios, N. R.: Basin-wide actual evapotranspiration estimation using NOAA/AVHRR satellite data, Phys. Chem. Earth, 30, 69–79, 2005.
Lorup, J. K., Refsgaard, J. C., and Mazvimavi, D.: Assessing the effect of land use change on catchment runoff by combined use of statistical tests and hydrological modelling: case studies from Zimbabwe, J. Hydrol., 205, 147–163, 1998.
Lu, N., Chen, S., Wilske, B., Sun, G., and Chen, J.: Evapotranspiration and soil water relationships in a range of disturbed and undisturbed ecosystems in the semi-arid Inner Mongolia, China, J. Plant Ecol., 4, 49–60, 2011.
Lunetta, R. S., Knight, J. F., Ediriwickrema, J., Lyon, J. G., and Worthy, L. D.: Land-cover change detection using multi-temporal MODIS NDVI data, Remote Sens. Environ., 105, 142–154, 2006.
Lv, Y. Z., Hu, K. L., and Li, B. G.: The spatio-temporal variability of soil water in sand dunes in maowusu desert, Acta Pedologica Sinica, 43, 152–154, 2006 (in Chinese).
Maayar, M. and Chen, J. M.: Spatial scaling of evapotranspiration as affected by heterogeneities in vegetation, topography, and soil texture, Remote Sens. Environ., 102, 33–51, 2006.
Mackay, D. S., Ewers, B. E., Cook, B. D., and Davis, K. J.: Environmental drivers of evapotranspiration in s shrub wetland and an upland forest in northern Wisconsin, Water Resour. Res., 43, W03442, https://doi.org/10.1029/2006WR005149, 2007.
Maidment, D. R.: Handbook of hydrology, New York, McGraw-Hill, 1993.
Mao, D. and Cherkauer, K. A.: Impacts of land-use change on hydrologic responses in the Great Lakes region, J. Hydrol., 374, 71–82, 2009.
Martens, S. N., Breshears, D. D., and Meyer, C. W.: Spatial distributions of understory light along the grassland/forest continuum: effects of cover, height, and spatialpattern of tree canopies, Ecol. Model., 126, 79–93, 2000.
Mauder, M., Liebethal, C., Göckede, M., Leps, J. P., Beyrich, F., and Foken, T.: Processing and quality control of flux data during LITFASS-2003, Bound.-Lay. Meteorol., 121, 67–88, 2006.
Mo, X. G., Liu, S. X., Lin, Z. H., and Chen, D.: Simulating the water balance of the wuding river basin in the Loess Plateau with a distributed eco-hydrological model, Acta Geographica Sinica, 59, 341–347, 2004 (in Chinese).
Morillas, L., Leuning, R., Villagarcía, L., García, M., Serrano-Ortiz, P., and Domingo, F.: Improving evapotranspiration estimates in Mediterranean drylands: The role of soil evaporation, Water Resour. Res., 49, 6572–6586, 2013.
Nouri, H., Beecham, S., Anderson, S., and Nagler, P.: High spatial resolution WorldView-2 imagery for mapping NDVI and its relationship to temporal urban landscape evapotranspiration factors, Remote Sens., 6, 580–602, 2014.
Ostwald, M. and Chen, D.: Land-use change: Impacts of climate variations and policies among small-scale farmers in the Loess Plateau, China, Land Use Policy, 23, 361–371, 2006.
Panferov, O., Knyazikhin, Y., Myneni, R. B., Szarzynski, J., Engwald, S., Schnitzler, K. G., and Gravenhorst, G.: The role of canopy structure in the spectral variation of transmission and absorption of solar radiation in vegetation canopies, IEEE T. Geosci. Remote, 39, 241–253, 2001.
Pearcy, R. W., Schulze, E. D., and Zimmermann, R.: Measurement of transpiration and leaf conductance, Plant physiological ecology, Springer Netherlands, 137–160, 1989.
Penman, H. L.: National evaporation from open water, bare soil and grass, P. R. Soc. Lond. A, 193, 120–145, 1948.
Penman, H. L.: Vegetation and hydrology, Tech. Comm. 53, Commenwealth Bureau of Soils, Harpenden, England, 1963.
Piao, S., Fang, J., Zhou, L., Ciais, P., and Zhu, B.: Variations in satellite-derived phenology in China's temperate vegetation, Glob. Change Biol., 12, 672–685, 2006.
Qin, S. H., Li, L. L., Wang, D., Zhang, J. L., and Pu, Y. L.: Effects of limited supplemental irrigation with catchment rainfall on rain-fed potato in semi-arid areas on the Western Loess Plateau, China, Am. J. Potato Res., 90, 33–42, 2013.
Qin, S., Zhang, J., Dai, H., Wang, D., and Li, D.: Effect of ridge–furrow and plastic-mulching planting patterns on yield formation and water movement of potato in a semi-arid area, Agr. Water Manage., 131, 87–94, 2014.
Qiu, G. Y., Xie, F., Feng, Y. C., and Tian, F.: Experimental studies on the effects of the “Conversion of Cropland to Grassland Program” on the water budget and evapotranspiration in a semi-arid steppe in Inner Mongolia, China, J. Hydrol., 411, 120–129, 2011.
Rossato, L., Alvala, R. C. S., Ferreira, N. J., and Tomasella, J.: Evapotranspiration estimation in the Brazil using NDVI data, Proc. SPIE, 5976, 377–385, 2005.
Snyman, H. A.: Water-use efficiency and infiltration under different rangeland conditions and cultivation in a semi-arid climate of South Africa, Proceedings of the XIX International Grassland Congress, Sao Paulo, Brazil, 965–966, 11–20 February 2001.
Souza, D. C. and Oyama, M. D.: Climatic consequences of gradual desertification in the semi-arid area of Northeast Brazil, Theor. Appl. Climatol., 103, 345–357, 2011.
Sun, G., Zhou, G., Zhang, Z., Wei, X., McNulty, S. G., and Vose, J. M.: Potential water yield reduction due to forestation across China, J. Hydrol., 328, 548–558, 2006.
Tian, H., Cao, C., Chen, W., Bao, S., Yang, B., and Myneni, R. B.: Response of vegetation activity dynamic to climatic change and ecological restoration programs in Inner Mongolia from 2000 to 2012, Ecol. Eng., 82, 276–289, 2015.
Tong, X., Zhang, J., Meng, P., Li, J., and Zheng, N.: Environmental controls of evapotranspiration in a mixed plantation in North China, Int. J. Biometeorol., 61, 227–238, https://doi.org/10.1007/s00484-016-1205-0, 2017.
Tucker, C. J.: Red and photographic infrared linear combinations for monitoring vegetation, Remote Sens. Environ.,8, 127–150, 1979.
Turrell, F. M.: Citrus leaf stomata: structure, composition, and pore size in relation to penetration of liquids, The University of Chicago Press, 108, 476–483, 1947.
Twine, T. E., Kucharik, C. J., and Foley, J. A.: Effects of land cover change on the energy and water balance of the Mississippi River basin, J. Hydrometeorol., 5, 640–655, 2004.
Valipour, M.: Study of different climatic conditions to assess the role of solar radiation in reference crop evapotranspiration equations, Arch. Acker Pfl. Boden, 61, 679–694, 2015.
Vetter, S. H., Schaffrath, D., and Bernhofer, C.: Spatial simulation of evapotranspiration of semi-arid Inner Mongolian grassland based on MODIS and eddy covariance data, Environmental Earth Sciences, 65, 1567–1574, 2012.
Wang, Y. H.: The hydrological influence of black locust plantations in the loess area of northwest China, Hydrol. Process., 6, 241–251, 1992.
Wang, M. Y., Guan, S. H., and Wang, Y.: Soil moisture regime and application for plants in Maowusu Transition Zone from sandland to desert, 16, 37–44, 2002.
Wang, L., Wang, Q. J., Wei, S. P., Shao, M. A., and Yi, L.: Soil desiccation for Loess soils on natural and regrown areas, Forest Ecol. Manag., 255, 2467–2477, 2008.
Wang, S., Wilkes, A., Zhang, Z., Chang, X., Lang, R., Wang, Y., and Niu, H.: Management and land use change effects on soil carbon in northern China's grasslands: a synthesis, Agr. Ecosyst. Environ., 142, 329–340, 2011.
Wang, Y. Q., Shao, M. A., Zhu, Y. J., and Liu, Z. P.: Impacts of land use and plant characteristics on dried soil layers in different climatic regions on the Loess Plateau of China, Agr. Forest Meteorol., 151, 437–448, 2011.
Wang, Z., Wang, L., Liu, L. Y., and Zheng, Q. H.: Preliminary study on soil moisture content in dried layer of sand dunes in the Mu Us sandland, 26, 2006 (in Chinese).
Wever, L. A., Flanagan, L. B., and Carlson, P. J.: Seasonal and interannual variation in evapotranspiration, energy balance and surface conductance in a northern temperate grassland, Agr. Forest Meteorol., 112, 31–49, 2002.
Wilson, K., Goldstein, A., Falge, E., Aubinet, M., Baldocchi, D., Berbigier, P., Bernhofer, C., Ceulemans, R., Dolman, H., Field, C., Grelle, A., Ibrom, A., Law, B. E., Kowalski, A., Meyers, T., Moncrieff, J., Monson, R., Oechel, W., Tenhunen, J., Valentini, R., and Verma, S.: Energy balance closure at FLUXNET sites, Agr. Forest Meteorol., 113, 223–243, 2002.
Wu, B. and Ci, L. J.: Landscape change and desertification development in the Mu Us Sandland, Northern China, J. Arid Environ., 50, 429–444, 2002.
Wu, G. X.: Roots' distribution characteristics and fine root dynamics of Sabina vulgaris and Artemisia ordosica in Mu Us Sandland, Master thesis of Inner Mongolia Agricultural University, 2006.
Xiao, C. W., Zhou, G. S., Zhang, X. S., Zhao, J. Z., and Wu, G.: Responses of dominant desert species Artemisia ordosica and Salix psammophila to water stress, Photosynthetica, 43, 467–471, 2005.
Yan, K., Li, S. Y., Lei, J. Q., Wang, H. F., Sun C., Yan, F. S., and Li, C.: Characteristics of surface energy exchange in the artificial shelter forest land of the hinterland of Taklimakan Desert, Arid Land Geography, 36, 433–440, 2013.
Yang, L., Wei, W., Chen, L., Chen, W., and Wang, J.: Response of temporal variation of soil moisture to vegetation restoration in semi-arid Loess Plateau, China, Catena, 115, 123–133, 2014.
Yang, Y. M., Yang, G. H., and Feng, Y. Z.: Climatic variation and its effect on desertification in 45 recent years in Mu Us sandland, Journal of Northwest A&F University (Nat. Sci. Ed.), 35, 87–92, 2007 (in Chinese).
Yang, Y., Bu, C., Mu, X., and Zhang, K.: Effects of differing coverage of moss-dominated soil crusts on hydrological processes and implications for disturbance in the Mu Us Sandland, China, Hydrol. Process., 29, 3112–3123, 2015.
Yuan, P. F., Ding, G. D., Wang, W. W., Wang, X. Y., and Shi, H. S.: Characteristics of rainwater infiltration and evaporation in Mu Us Sandland, Science of Soil and Water Conservation, 4, 23–27, 2008.
Zeng, B. and Yang, T.-B.: Impacts of climate warming on vegetation in Qaidam area from 1990 to 2003, Environ. Monit. Assess., 144, 403–417, 2008.
Zeng, N. and Yoon, J.: Expansion of the world's deserts due to vegetation-albedo feedback under global warming, Geophys. Res. Lett., 36, L17401, 2009.
Zeng, X., Shaikh, M., Dai, Y., Dickinson, R. E., and Myneni, R.: Coupling of the common land model to the NCAR community climate model, J. Climate, 15, 1832–1854, 2002.
Zhang, Q., Manzoni, S., Katul, G., Porporato, A., and Yang, D.: The hysteretic evapotranspiration – Vapor pressure deficit relation, J. Geophys. Res.-Biogeo., 119, 125–140, 2014.
Zhang, Y., Munkhtsetesg, E., Kadota, T., and Ohata, T.: An observational study of ecohydrology of a sparse grassland at the edge of the Eurasian cryosphere in Mongolia, J. Geophys. Res.-Atmos., 110, D14103, https://doi.org/10.1029/2004JD005474, 2005.
Zhang, Z. P.: Vegetation pattern changes in Mu Us desert and the analysis of water income and expenses: a case study in wushen county, Mater thesis of Inner Mongolia University, 2006 (in Chinese).
Short summary
Seasonal and inter-annual features of ET were analyzed over four periods. A normalization method was adopted to exclude the effects of potential evapotranspiration and soil water stress on ET. During the land degradation process, when natural vegetation (including leaves and branches), sand dunes, dry sand layers, and BSCs were all bulldozed, ET was observed to increase at a mild rate. In a vegetation rehabilitation process with sufficient groundwater, ET also increased at a faster rate.
Seasonal and inter-annual features of ET were analyzed over four periods. A normalization method...