Abstract:

Three Gorges Project has got widespread concern with its huge ecological and other comprehensive benefits,such as,flood control,power generation,navigation,water supply.Three Gorges Project may lead to complex and diverse ecological environment problems.To protect the ecological environment,mitigate the natural disasters,maintain the ecosystem balance,it is very important to identify the potential causes of the problems and driving factors accurately.Based on historical documents and data collection,hydrology and water quality monitoring,remote sensing and other means,the paper summarized the main types of driving forces on ecological environment in Three Gorges Reservoir,and comparatively analyzed the differences of main driving forces before and after the project construction.The results showed that the Three Gorges Project construction,migrant relocation,social and economic development in the reservoir,social and economic development in upper area of the Yangtze River,pollution load,such five human driving forces were the main driving forces leading to the ecological environment evolution in the area.In this study,a comprehensive analysis from various aspects was carried out to make the evolution of the ecological environment of the reservoir area and the driving force mechanism clear in the Three Gorges Project construction period,and to provide basic data for the the ecological environment protection and scientific management of Three Gorges Reservoir Area