Impacts of land use/cover change on water balance by using the SWAT model in a typical loess hilly watershed of China
作者机构：State Key Laboratory of Urban and Regional EcologyResearch Center for Eco-environmental SciencesChinese Academy of SciencesBeijing 100085China Institute of International Rivers and Eco-SecurityYunnan UniversityKunming 650500China School of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 100049China
出 版 物：《Geography and Sustainability》 (地理学与可持续性（英文）)
年 卷 期：2023年第4卷第1期
页 面：19-28页
核心收录：
学科分类：08[工学] 09[农学] 0705[理学-地理学] 0903[农学-农业资源与环境] 083306[工学-城乡规划管理] 0833[工学-城乡规划学]
基 金：This research was jointly supported by the National Natural Science Foundation of China(Grants No.U21A2011,41991233 and 41971129) the National Key Research and Development Program of China(Grant No.SQ2022YFF1300053) the Distinguished Membership Project of the Youth Innovation Promotion Association of Chinese Academy of Sci-ences(Grant No.Y201812)
主 题：Surface runoff Evapotranspiration SWAT model Land use change Yellow River
摘 要：Land use/cover change(LUCC)plays a key role in altering surface hydrology and water balance,finally affect-ing the security and availability of water ***,mechanisms underlying LUCC determination of water-balance processes at the basin scale remain *** this study,the Soil and Water Assessment Tool(SWAT)model and partial least squares regression were used to detect the effects of LUCC on hydrology and water components in the Zuli River Basin(ZRB),a typical watershed of the Yellow River *** general,three recommended coefficients(R^(2)and E ns greater than 0.5,and P bias less than 20%)indicated that the output results of the SWAT model were reliable and that the model was effective for the ***,several key findings were ***,LUCC in the ZRB was characterized by a significant increase in forest(21.61%)and settlement(23.52%)and a slight reduction in cropland(-1.35%),resulting in a 4.93%increase in evapotranspiration and a clear decline in surface runoffand water yield by 15.68%and 2.95%at the whole basin scale,***,at the sub-basin scale,surface runoffand water yield increased by 14.26%-36.15%and 5.13%-15.55%,respectively,mainly due to settlement ***,partial least squares regression indicated that urbanization was the most significant contributor to runoffchange,and evapotranspiration change was mainly driven by forest *** conclusions are significant for understanding the relationship between LUCC and water balance,which can provide meaningful information for managing water resources and the long-term sustainability of such watersheds.
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