Research on Poyang Lake Regional Protection and Management Countermeasures under the Change of River-lake Relationship

Liqiang Yao,Yanyi Liu,Dasheng Zou,Bo Yan,Jijun Xu

doi:10.1051/e3sconf/202128302046

Abstract

In recent years, with the construction and operation of the Three Gorges Project, a series of changes have taken place in the relationship between the Yangtze River and Poyang Lake. Changes in hydrological conditions have led to problems in the Poyang Lake area such as early dry season, extended dry duration, and lower dry water level. As the largest freshwater lake in my country, Poyang Lake is an important treasure house of water resources in the middle and lower reaches of the Yangtze River. It is of great significance to study the protection and management of Poyang Lake under the changing relationship between rivers and lakes. This article analyzes the impact of changes in the relationship between rivers and lakes on the hydrological situation of the Poyang Lake area, and sorts out the problems of the ecological environment under the changes of rivers and lakes. On this basis, combined with the ongoing Poyang Lake water conservancy project, the importance of the construction of the hub is analyzed, and relevant suggestions for the current problems facing Poyang Lake are put forward.

Highlights

The water volume of Poyang Lake during the dry season has shown a downward trend in recent years [1]
Studies have shown that the main reason for the low water changes of Poyang Lake is the corresponding changes in precipitation and the incoming water of the five rivers, followed by the changes in the upper and middle reaches of the Yangtze River [2,3]
After the completion of the Three Gorges Project, impounding water at the end of the flood season will change the amount of water inflow from the Yangtze River, and the supporting effect of the Yangtze River at the end of the flood season will affect the hydrological situation of Poyang Lake

Summary

Introduction

The water volume of Poyang Lake during the dry season has shown a downward trend in recent years [1]. In April 2007, the Premier Wen Jiabao instructed “to maintain the clean water of Poyang Lake and one lake forever”; in September 2009, the Vice Premier Li Keqiang made clear instructions when inspecting Poyang Lake: “The first is to build the Poyang Lake ecological water conservancy project. Put it in the overall structure of the Yangtze River system, and consider it at the national level; second, the entire construction project must highlight the ecological characteristics, make overall plans, and take the path of ecological development, so as to provide experience for the Poyang Lake area to. Considering the preliminary demonstration work of the Poyang Lake Water Conservancy Project, it is very necessary to put forward the protection and management countermeasures of Poyang Lake under the change of the relationship between the rivers and lakes

Study Area

Analysis of changes in the relationship of river-lake

Significance of Poyang Lake Water Conservancy Project Construction

Findings

Conclusions