水土保持研究2024，Vol.31Issue(3)：61-68,78,9.DOI:10.13869/j.cnki.rswc.2024.03.007
黄河中游典型流域土地利用对径流的调控作用
Regulation of Land Use on Runoff in Typical Watersheds of the Middle Reaches of the Yellow River
摘要
Abstract
[Objective]The aim of this study is to examine the regulatory effects and thresholds of different land uses on runoff variations in the middle reaches of the Yellow River,which is crucial for flood control and the high-quality development of the watershed.[Methods]Focusing specifically on the Dali River Basin,the characteristics of land use changes over the past 20 years were analyzed,and the impact of these changes on the annual distribution of runoff was quantitatively assessed by using a monthly scale SWAT model of the basin.Four extreme land use scenarios were set to study the impact of different land use types on flood season runoff.Additionally,12 different land use coverage scenarios were used to determine the critical coverage of land use that affected watershed runoff.[Results]The predominant land use modes in the Dali River Basin included arable land,grassland,and forest land.Grassland and forestland exhibited an inhibitory effect on runoff,while arable land promoted runoff.The impact coefficients for these land use types were-0.1252,-0.130 1,and 0.122 3,respectively.Land use had a certain regulatory effect on the annual distribution of runoff.However,this effect was not significant when land use changes were small.[Conclusion]Notably,land use coverage demonstrates a significant marginal effect,with a lower critical value of approximately 5％for grasslands and an upper critical value of 95％,as well as an upper critical value of 91％for forests.These findings can provide valuable insights for soil and water conservation efforts,flood control initiatives,and the high-quality development of the watershed.关键词
SWAT模型/土地利用变化/阈值/大理河流域Key words
SWAT model/land use change/threshold/Dali River Basin分类
天文与地球科学引用本文复制引用
王倩华,张攀,王伟,肖培青,吴晓玲..黄河中游典型流域土地利用对径流的调控作用[J].水土保持研究,2024,31(3):61-68,78,9.基金项目
国家自然科学基金专项项目(42041006) （42041006）
国家自然科学基金联合资助项目(U2243210) （U2243210）
河南省自然科学基金优秀青年科技项目(212300410060) （212300410060）
河南省水利科技攻关项目(GG202149) （GG202149）
