水力发电学报2025，Vol.44Issue(1)：77-97,21.DOI:10.11660/slfdxb.20250107
土地利用变化对流域水量供给和洪水调节服务的影响
Impact of land use changes on freshwater provision and flood regulation services in watersheds
摘要
Abstract
West Liao River Basin(WLRB)is a typical region that is fragile and sensitive ecologically.It is important to study the impact of its land use changes on freshwater provision and flood regulation for sustainable utilization of its water resources and ecological protection.This paper presents an analysis on the spatial and temporal evolution characteristics of freshwater provision and flood regulation services in the basin in 1990-2020,using a distributed hydrological model(GBHM)developed for WLRB,in combination with an index-based ecosystem service approach.We discuss in depth the impacts of the changes in different land types-such as grassland,farmland and forest-on the two eco-hydrological service functions.The results show that in this period,overall freshwater provision services decreased significantly(P<0.05),while flood regulation services increased significantly(P<0.05).Both services are higher in the downstream than those in the upstream.In the period of 2005-2020,freshwater provision services in most sub-watersheds were 0%-42%lower than those in its previous period,while flood regulation services were 0%-73%higher than the previous values.In representative sub-watersheds,the decreases in grassland and farmland areas and the increase in forested land area resulted in a decrease in freshwater provision services,but enhanced flood regulation service functions to a certain degree.关键词
西辽河流域/土地利用/水量供给服务/洪水调节服务/分布式水文模型Key words
West Liao River basin/land use/freshwater provision service/flood regulation service/distributed hydrologic model分类
天文与地球科学引用本文复制引用
刘文倩,李萍,乔子戌,谢展,唐莉华..土地利用变化对流域水量供给和洪水调节服务的影响[J].水力发电学报,2025,44(1):77-97,21.基金项目
内蒙古自治区科技重大专项(2021ZD0015) （2021ZD0015）
陕西省重点研发计划一般项目(2023-YBSF-380) （2023-YBSF-380）
