Evaluation of the water conservation function in the Ili River Delta of Central Asia based on the InVEST model

作     者：CAO Yijie MA Yonggang BAO Anming CHANG Cun LIU Tie CAO Yijie;MA Yonggang;BAO Anming;CHANG Cun;LIU Tie

作者机构：College of Geography and Remote Sensing SciencesXinjiang UniversityUrumqi 830046China Xinjiang Key Laboratory of Oasis EcologyXinjiang UniversityUrumqi 830046China College of Ecology and EnvironmentXinjiang UniversityUrumqi 830046China Xinjiang Jinghe Observation and Research Station of Temperate Desert EcosystemMinistry of EducationJinghe 833300China Key Laboratory of Oasis Ecology of Education MinistryUrumqi 830046China State Key Laboratory of Desert and Oasis EcologyXinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of GIS&RS ApplicationXinjiang Uygur Autonomous RegionUrumqi 830011China 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2023年第15卷第12期

页      面：1455-1473页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082802[工学-农业水土工程] 07[理学] 08[工学] 0828[工学-农业工程] 0713[理学-生态学] 

基　　金：funded by the National Natural Science Foundation of China(42071245) the Xinjiang Uygur Autonomous Region Innovation Environment Construction Special Project&Science and Technology Innovation Base Construction Project(PT2107) the Third Xinjiang Comprehensive Scientific Survey Project Sub-topic(2021xjkk140305) the Tianshan Talent Training Program of Xinjiang Uygur Autonomous Region(2022TSYCLJ0011) the K.C.Wong Education Foundation(GJTD-2020-14) 

主　　题：water conservation function water yield Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model climate change land use/land cover change(LUCC) Ili River Delta Lake Balkhash 

摘      要：The Ili River Delta(IRD)is an ecological security barrier for the Lake Balkhash and an important water conservation area in Central *** this study,we selected the IRD as a typical research area,and simulated the water yield and water conservation from 1975 to 2020 using the water yield module of the Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)*** further analyzed the temporal and spatial variations in the water yield and water conservation in the IRD from 1975 to 2020,and investigated the main driving factors(precipitation,potential evapotranspiration,land use/land cover change,and inflow from the Ili River)of the water conservation variation based on the linear regression,piecewise linear regression,and Pearson s correlation coefficient *** results indicated that from 1975 to 2020,the water yield and water conservation in the IRD showed a decreasing trend,and the spatial distribution pattern washigh in the east and low in the west;overall,the water conservation of all land use types decreased *** water conservation volume of grassland was the most reduced,although the area of grassland increased owing to the increased inflow from the Ili *** the same time,the increased inflow has led to the expansion of wetland areas,the improvement of vegetation growth,and the increase of regional evapotranspiration,thus resulting in an overall reduction in the water *** water conservation depth and precipitation had similar spatial distribution patterns;the change in climate factors was the main reason for the decline in the water conservation function in the *** reservoir in the upper reaches of the IRD regulated runoff into the Lake Balkhash,promoted vegetation restoration,and had a positive effect on the water conservation;however,this positive effect cannot offset the negative effect of enhanced *** results provide a reference for the rational allocation of water resources and ecosys