Articles | Volume 30, issue 7
https://doi.org/10.5194/hess-30-1891-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-1891-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Reframing gullies as recharge zones in dryland landscapes of the Loess Plateau, China
Zhenxia Ji
State Key Laboratory of Soil and Water Conservation and Desertification Control, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
College of Soil and Water Conservation Science and Engineering, Northwest A&F University, Yangling 712100, China
State Key Laboratory of Soil and Water Conservation and Desertification Control, Chinese Academy of Sciences, the Ministry of Water Resources, Yangling 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and the Ministry of Water Resources, Yangling 712100, China
Alan D. Ziegler
Andaman Coastal Station for Research and Development, Kasetsart University, Ranong, Thailand
Li Wang
CORRESPONDING AUTHOR
State Key Laboratory of Soil and Water Conservation and Desertification Control, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
College of Soil and Water Conservation Science and Engineering, Northwest A&F University, Yangling 712100, China
State Key Laboratory of Soil and Water Conservation and Desertification Control, Chinese Academy of Sciences, the Ministry of Water Resources, Yangling 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and the Ministry of Water Resources, Yangling 712100, China
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Tropical land surface processes shape the Earth's climate, but models often lack accuracy in the tropics due to limited data for validation. We improved the Noah with Multi-Parameterizations (Noah-MP) land surface model for the tropics using data from forests in Panama and Malaysia. Calibration enhanced simulations of energy and water fluxes, and revealed key vegetation and soil parameters, as well as future directions for model improvement in tropical regions.
Junjie Dai, Ying Zhao, Katsutoshi Seki, and Li Wang
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2023-66, https://doi.org/10.5194/hess-2023-66, 2023
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We discovered that tree transpiration decresed with degradation intensified. However, compared with healthy trees, degraded trees did not change root water uptake patterns, i.e. they can shift the water source from shallow to deep layers in the process of soil wetting to drying. Additionally, the sensitivity of WUEi to SWC for degraded trees increased compared to trees without degradation. Our findings provide a scientific basis for elucidating the adaptation mechanisms of trees in adversity.
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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.
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Short summary
Isotopic and chemical tracers show that precipitation dominates recharge of shallow pore water in engineered gully zones, whereas deeper fissure water is recharged more slowly through percolation. These systems enhance groundwater recharge in dry regions, providing opportunities for sustainable water management.
Isotopic and chemical tracers show that precipitation dominates recharge of shallow pore water...