207 / 2024-02-27 19:11:13

Research on the Current Ecological Environment Status and Ecological Restoration Measures of Zhangdu Lake in Wuhan City

Zhangdu lake； water quality improvement；aquatic ecology restoration

In order to explore the current status and the existing ecological environment problems of Zhangdu Lake in Wuhan, restore the aquatic ecology, improve the water quality and increase the regional biodiversity, the current ecological environment and main pollution sources of Zhangdu Lake were investigated, and the existing water environment problems were analyzed. The results showed that the aquatic ecology of Zhangdu Lake has significantly deteriorated due to a reduction in lake surface area, the discharge of exogenous pollutants and the release of endogenous pollution, making it difficult to achieve water quality management objectives. The endogenous pollution accounted for 34.25% and 39.62% of total nitrogen and total phosphorus respectively, which was an important cause of the sub-standard water quality. In addition, due to the lack of ecological buffering effect on the bank slope of Zhangdu Lake, pollutants were washed into the lake through runoff, resulting in non-point source pollution. Furthermore, extensive aquaculture activities have led to a severe decline in fish age and reduction in biodiversity. Additionally, due to the wide surface, winds and waves were strong in the lake area, which made it challenging for aquatic plants to settle, further complicating the ecological restoration. In order to solve the above-mentioned issues, this paper proposed various measures including on-site treatment of endogenous pollution, implementing slope restoration methods, enhancing water transparency, reducing wind-induced turbulence, etc. Moreover, the ecological restoration demonstration project was conducted, which aimed at ultimately reducing the pollution loads, achieving a stable water quality, gradually restoring the aquatic ecology, and finally improving the lake functionality, thereby providing technical support for the long-term ecological restoration of the Zhangdu lake area.