北京水务Issue(6)：44-48,5.DOI:10.19671/j.1673-4637.2024.06.008
永定河生态通水实践及其成效分析
Analysis on practice and effect of ecological water diversion in Yongding River
钟伟 1张佳琪 1祁秀娇 1李君超1
作者信息
- 1. 永定河流域投资有限公司 北京 100193
- 折叠
摘要
Abstract
The implementation of ecological water replenishment is a key measure for the comprehensive management and ecological restoration of the Yongding River.To quantify the achievements of the Yong-ding River's ecological water replenishment,analyzed the issues facing the Yongding River and reviewed the experiences and achievements of ecological water replenishment.From 2019 to 2023,a total of 3.65 billion cubic meters of water was ecologically replenished to the Yongding River through various proj-ects.In 2023,the river achieved its first full-year flow since being dried up in 1996,with an average annu-al growth rate of 85％in flow duration.The ecological water quantity at important sections such as Cetian Reservoir,Shixiagli,and Guanting Reservoir all met the replenishment targets,and the groundwater level in the 5-10 km range along both sides of the river effectively rose.Specifically,the groundwater level in the Beijing plain section of the Yongding River increased by 18.6 meters compared to the levels before re-plenishment.Ecological water replenishment promoted improvements in the ecological environments of rivers and lakes,In 2023,the proportion of the Yongding River with Class Ⅲ water quality or higher for the entire year increased by 61％compared to pre-replenishment levels,improving the eutrophic state of reservoirs and enhancing biodiversity.The research results provide reference for other river basins to carry out ecological water replenishment work.关键词
永定河/生态补水/实施路径/成效分析Key words
Yongding River/ecological water replenishment/implementation path/effect analysis分类
建筑与水利引用本文复制引用
钟伟,张佳琪,祁秀娇,李君超..永定河生态通水实践及其成效分析[J].北京水务,2024,(6):44-48,5.
