Preprints
https://doi.org/10.5194/hess-2022-375
https://doi.org/10.5194/hess-2022-375
16 Jan 2023
 | 16 Jan 2023
Status: this preprint was under review for the journal HESS but the revision was not accepted.

Hydrological effects of evapotranspiration in the Qilian Mountains forest belt

Yinying Jiao, Guofeng Zhu, Dongdong Qiu, Yuwei Liu, Lei Wang, Siyu Lu, Gaojia Meng, Xinrui Lin, Rui Li, Qinqin Wang, Longhu Chen, and Niu Sun

Abstract. Mountainous areas are the main water-producing and source areas of rivers. Global climate change is transforming the distribution of plants and forms of water use. Therefore, a clear understanding of evapotranspiration in mountainous forest zone is key for understanding the ecohydrological effect of vegetation and its influence on the water cycle of the watershed. We quantified the evapotranspiration processes in the forest belts of the Qilian Mountains as well as their contribution to runoff yield and concentration based on precipitation, soil water, and plant water samples and experimental data. The study showed that transpiration of Qinghai spruce accounted for the highest proportion of evapotranspiration in the entire Qinghai spruce forest ecosystem, with an average of 79 %, which means that transpiration is much greater than evaporation. Soil water content and air humidity were the dominant factors influencing evapotranspiration in Qinghai spruce forest belts. The growing season of Qinghai spruce is characterized by greater evapotranspiration than precipitation in each month. Consequently, the forest zone does not yield flows in the eastern part of the Qilian Mountains. The warming of global temperatures and human activities are likely to trigger shifts in the distribution areas and evapotranspiration regimes of Qinghai spruce, which in turn will lead to a change in water resource patterns in the basin.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Yinying Jiao, Guofeng Zhu, Dongdong Qiu, Yuwei Liu, Lei Wang, Siyu Lu, Gaojia Meng, Xinrui Lin, Rui Li, Qinqin Wang, Longhu Chen, and Niu Sun

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2022-375', Anonymous Referee #1, 30 Mar 2023
    • AC1: 'Reply on RC1', Guofeng Zhu, 19 Jun 2023
  • RC2: 'Comment on hess-2022-375', Anonymous Referee #2, 14 May 2023
    • AC2: 'Reply on RC2', Guofeng Zhu, 19 Jun 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2022-375', Anonymous Referee #1, 30 Mar 2023
    • AC1: 'Reply on RC1', Guofeng Zhu, 19 Jun 2023
  • RC2: 'Comment on hess-2022-375', Anonymous Referee #2, 14 May 2023
    • AC2: 'Reply on RC2', Guofeng Zhu, 19 Jun 2023
Yinying Jiao, Guofeng Zhu, Dongdong Qiu, Yuwei Liu, Lei Wang, Siyu Lu, Gaojia Meng, Xinrui Lin, Rui Li, Qinqin Wang, Longhu Chen, and Niu Sun
Yinying Jiao, Guofeng Zhu, Dongdong Qiu, Yuwei Liu, Lei Wang, Siyu Lu, Gaojia Meng, Xinrui Lin, Rui Li, Qinqin Wang, Longhu Chen, and Niu Sun

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Short summary
Qilian Mountains are an important ecological security barrier and a priority area for biodiversity conservation in central Asia. We quantified the evapotranspiration processes in the forest belts of the Qilian Mountains as well as their contribution to runoff yield and concentration based on precipitation, soil water, and plant water samples and experimental data. We draw a conclusion that the forest zone does not yield flows in the eastern part of the Qilian Mountains.