考虑生态耗水的干旱区绿洲灌溉用水效率评价指标与方法OA北大核心CSTPCDEI
A new evaluation indicator and method for oasis irrigation water use efficiency in arid regions considering ecological water consumption
针对现行干旱区绿洲尺度灌溉用水效率评价对生态服务效益考虑不足的问题,提出了在绿洲尺度上考虑生态耗水的灌溉用水效率评价指标和方法,并应用于宁夏引黄灌溉绿洲.结果表明:宁夏引黄灌溉绿洲农田蒸散消耗水量中的灌溉水量平均占比达74.7％,生态系统蒸散消耗水量中的灌溉水量平均占比达39.8％,灌溉水对生态系统的支撑作用显著;考虑生态耗水前后的灌溉用水效率差为0.052～0.074,占未考虑生态耗水灌溉用水效率的13.9％～16.1％,灌溉水的生态服务效益明显;提出的评价指标与方法合理可行,能客观反映干旱区灌溉用水的综合效益.
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.
赵勇;董义阳;翟家齐;刘宽;刘志武;梁犁丽
中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京 100038中国长江三峡集团有限公司科学技术研究院,北京 101199中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京 100038||天津大学水利工程仿真与安全国家重点实验室,天津 300072
水利科学
灌溉用水效率生态耗水干旱区蒸散发水循环模拟宁夏引黄灌溉绿洲
irrigation water use efficiencyecological water consumptionarid regionsevapotranspirationwater cycle simulationirrigated oasis of the Yellow River in Ningxia Hui Autonomous Region
《水资源保护》 2024 (003)
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国家重点研发计划项目(2021YFC3200205);国家自然科学基金项目(51979284);国家杰出青年科学基金项目(52025093);国家科技基础资源调查专项(2021xjkk0405)
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