Journal of Engineering Research

The construction of high dam and large reservoir plays an important role in water resources allocation, flood control and power generation, but it has a significant impact on the downstream water ecological environment. This paper analyzes the potential ecological risks of high dam reservoir on the downstream hydrological situation, water quality, biodiversity and ecosystem service function. Based on this, targeted protection measures are put forward, including ecological flow guarantee, water quality improvement, biological habitat restoration and ecological monitoring system construction. The research shows that scientific and reasonable protection measures can effectively alleviate the adverse effects of the construction of high dam and large reservoir on the downstream water ecological environment, and provide theoretical basis and practical reference for realizing the coordinated development of water conservancy project and ecological environment.

High dam and large reservoir; Water ecological environment; Impact assessment; Protection measures; Ecological restoration