Spatiotemporal evolution of water conservation function and its driving factors in the Huangshui River Basin, China  

作　　者：YUAN Ximin SU Zhiwei TIAN Fuchang WANG Pengquan 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300350,China [2]School of Civil Engineering,Tianjin University,Tianjin 300350,China [3]School of Civil and Transportation Engineering,Qinghai Minzu University,Xining 810007,China

出　　处：《Journal of Arid Land》2024年第11期1484-1504,共21页干旱区科学（英文版）

基　　金：funded by the National Key R&D Program of China(2023YFC3008502);the National Natural Science Foundation of China(52309103);the Major Science and Technology Programs of the Ministry of Water Resources(MWR)(SKS-2022002);the Chengde Applied Technology Research and Development and Sustainable Development Agenda Innovation Demonstration Zone Special Science and Technology Plan Project(202305B009);the Qinghai Province Applied Basic Research Program(2024-ZJ-773).

摘　　要：The Grain for Green project has had a substantial influence on water conservation in the Huangshui River Basin,China through afforestation and grassland restoration over the past two decades.However,a comprehensive understanding of the spatiotemporal evolution of water conservation function and its driving factors remains incomplete in this basin.In this study,we utilized the Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model to examine the spatiotemporal evolution of water conservation function in the Huangshui River Basin from 2000 to 2020.Additionally,we employed the random forest model,Pearson correlation analysis,and geographical detector(Geodetector)techniques to investigate the primary factors and factor interactions affecting the spatial differentiation of water conservation function.The findings revealed several key points.First,the high-latitude northern region of the study area experienced a significant increase in water conservation over the 21-a period.Second,the Grain for Green project has played a substantial role in improving water conservation function.Third,precipitation,plant available water content(PAWC),grassland,gross domestic product(GDP),and forest land were primary factors influencing the water conservation function.Finally,the spatial differentiation of water conservation function was determined by the interactions among geographical conditions,climatic factors,vegetation biophysical factors,and socio-economic factors.The findings have significant implications for advancing ecological protection and restoration initiatives,enhancing regional water supply capabilities,and safeguarding ecosystem health and stability in the Huangshui River Basin.

关 键 词：water conservation function Grain for Green project climate change Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model random forest geographical detector(Geodetector) Huangshui River Basin 

分 类 号：TV213.4[水利工程—水文学及水资源] X171.1[环境科学与工程—环境科学]