Advantages and disadvantages of Three Gorges Water Conservancy Project

Flood control (1998 Changjiang flood),

Power generation (transmission distance in Central China is 500km, and in East China, Guangdong1000km, which has environmental protection benefits),

Shipping (the 600 km Chuanjiang waterway from Yichang to Chongqing is characterized by large drop, rapid current, many dangerous beaches and low navigation capacity, and the Three Gorges Project can fundamentally improve shipping conditions)

Environmental benefits (the impact is mainly in the middle and lower reaches, which is conducive to the prevention and treatment of blood-sucking diseases in the middle and lower reaches, reducing the triviality and sediment deposition in Dongting Lake, increasing the flow of the middle and lower reaches in dry season, improving the water quality in dry season and regulating the local climate)

Disadvantages:

In the process of resettlement development and urban relocation, improper handling of reservoir areas (mainly adverse impact areas, submerged land and cultivated land) may lead to new problems such as soil erosion and environmental pollution, induce earthquakes and increase the possibility of geological disasters such as landslides. It will have a certain impact on the living environment of aquatic organisms and rare species, and water storage will increase mosquito breeding and affect people's health)

Cultural relics and historical sites (some landscapes will be submerged, such as the original rapids and rapids) will disappear, and some scenic spots and cultural relics will be submerged, but there will be a magnificent landscape of "high gorge out of Pinghu"