ZHU Jingsi, WANG Zhe, LI Chunli，LI Yu
(Hydrology Bureau of Haihe River Water Conservancy Commission, MWR,Tianjin 300170,China）
Objectives of the study
From 2019 to 2022, the recent goal of comprehensive management of groundwater overexploitation in North China has realized. Based on the practice of annual normalization of large-scale river and lake ecological water supplement and groundwater replenishment in North China in recent years(Table 1), this paper systematically evaluated the impact and effectiveness of ecological water supplement, and provided a basis for ensuring the stable promotion of river and lake ecological recovery and improving the quality and stability of water ecosystem.