武汉大东湖水网构建工程对生物多样性影响研究

Influences of Donghu Lake water network construction project on biodiversity

由于江湖通道隔截,武汉大东湖各湖泊变得相对"孤立",水质污染严重,生物多样性明显下降,为此,武汉市实施了大东湖水网构建工程,将长江与大东湖各湖泊连通起来。根据大东湖目前的污染现状、工程引水规划以及长江和东湖的水质和水生生物情况,分析了工程实施对湖泊生境、水生生物、鱼类及鸟类的影响。工程的实施,将增强水体的流动性、提高湖泊的水体置换能力、减少死水区、扩大湖泊环境容量,为水生生物多样性的恢复创造适宜的生境。

Due to cutting - off of the passages between the Yangtze River and Donghu Lake, the sub - lakes of Donghu become relatively ＂isolated＂, and the water is polluted severely and the bio - diversity declines obviously. For this reason, the Wuhan government conducted the Donghu Lake water network construction project to connect all the sub - lakes and the Yangtze River. According to present pollution condition of Donghu Lake, water diversion plan and water quality and aquatic organisms of the Yangtze River, the influences of project implementation on aquatic habitat, aquatic organisms, fishes and birds are analyzed. The project implementation will enhance the flow mobility, improve exchange capacity of lake water bodies, reduce dead water zones and increase environmental capacity, and create suitable aquatic habitat for restoring biodiversity of aquatic organisms in Donghu Lake.