北京水务Issue(2)：17-23,7.DOI:10.19671/j.1673-4637.2024.01.004
流域水生态健康评价
Evaluation of water ecological health of watersheds:A case study of the upper Miyun Reservoir in Beijing
摘要
Abstract
Six sub-watersheds from Xifuying,Anzhouba,Duijia River,Xikouwai,Liudao River,and Cai-shi River are served as crucial drinking water sources in Beijing.A comprehensive evaluation index sys-tem was established,comprising 10 indicators categorized into habitat structure,water body physicochemi-cal properties,and aquatic organisms.Utilizing this comprehensive health index method based on entropy value,the water ecosystems health status within these watersheds was thoroughly assessed.The assess-ment revealed that the Xifuying,Anzhouba,and Duijia River watersheds exhibited very healthy condi-tions,while the Xikouwai,Liudao River,and Caishi River watersheds were classified as healthy.Signifi-cantly differing health statuses were observed among the six sub-watersheds,with Xifuying,Anzhouba,Duijia River,and Xikouwai performing notably better than Liudao River and Caishi River.In the contribu-tion evaluation analysis,landscape fragmentation and nitrate nitrogen emerged as major contributors,with mean values of 18.61％and 16.4％,respectively.Conversely,the contributions of vegetation cover,total phosphorus,and total nitrogen were relatively lower,averaging 5.05％,6.56％,and 4.43％,respectively.This analysis underscored the significance of controlling the proportion of construction land in the water-shed,enhancing riparian vegetation quality,and preserving the natural state of river channels to promote river health.关键词
流域/水生态健康/指标体系/密云水库上游Key words
watershed/water ecological health/system of indicators/upper Miyun Reservoir分类
建筑与水利引用本文复制引用
赵振华,朱莎莎,薛万来,李垒,李文忠,刘可暄..流域水生态健康评价[J].北京水务,2024,(2):17-23,7.基金项目
北京市科技计划课题(Z221100005222013):"密云水库水生态安全优化调控技术体系研究与示范". （Z221100005222013）
