A new evaluation indicator and method for oasis irrigation water use efficiency in arid regions considering ecological water consumption

被引：0
|
作者：
Zhao Y. [1 ]
Dong Y. [2 ]
Zhai J. [1 ]
Liu K. [1 ,3 ]
Liu Z. [2 ]
Liang L. [2 ]
机构：
[1] State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing
[2] Science and Technology Research Institute, China Three Gorges Corporation, Beijing
[3] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin
来源：
Water Resources Protection | 2024年 / 40卷 / 03期
关键词：
arid regions; ecological water consumption; evapotranspiration; irrigated oasis of the Yellow River in Ningxia Hui Autonomous Region; irrigation water use efficiency; water cycle simulation;
D O I：
10.3880/j.issn.10046933.2024.03.010
中图分类号：
学科分类号：
摘要：
In response to the shortcomings of insufficient consideration of ecological service benefits in current evaluation of irrigation water use efficiency at irrigated oasis scale in arid regions, a new indicator and method to evaluate irrigation water use efficiency considering ecological water consumption were proposed and applied in irrigated oasis of the Yellow River in Ningxia Hui Autonomous Region. The results show that the average proportion of irrigation water in farnland evapotranspiration consumption is 74. 7%, and that in ecosystem evapotranspiration consumption is 39. 8%. Irrigation water plays a significant role in supporting the ecosystem. The difference between irrigation water use efficiency with and without considering ecological water consumption is 0. 052 ~ 0. 074, accounting for 13. 9% ~ 16. 1% of the irrigation water efficiency without considering the ecological water consumption, and the ecological service benefit of irrigation water is obvious. The proposed indicator and method are reasonable and feasible, and can objectively reflect the comprehensive benefits of irrigation water use. © 2024 Editorial Board of Water Resources Protection. All rights reserved.
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页码：78 / 89
页数：11
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