Ecological Study of Pollution Status and Countermeasures of Rural Domestic Refuse in the Three Gorges Reservoir Area

The ecological and environmental problems of the Three Gorges Reservoir Area have different effects on its ecological security. In order to explore the present situation of rural domestic waste pollution in the three Gorges Reservoir area and to find out reasonable rural domestic waste management measures, the typical villages in the upper reaches of the Yangtze River and in the mountainous hilly areas of central and eastern Chongqing were selected as experimental samples. The results showed that the per capita MSW production was 0.33 ~ 0.45 kg/d in the mountainous areas of central and eastern Chongqing. There is a linear positive correlation between the amount of rural domestic refuse production and the disposable income of residents. At present, typical components of rural domestic waste in the three Gorges Reservoir area include kitchen waste, bamboo and wood, ash (slag) soil, rubber and plastics, waste paper, textiles, used batteries, expired drugs, pesticides, insecticides, etc. Among them, the amount of organic matter such as kitchen garbage and bamboo wood exceeded 60%, and the waste plastics (including expired drugs, agricultural plastic mulch, pesticide and chemical fertilizer packaging) and so on were close to 15%. It is pointed out that the current system of garbage collection, storage, transportation and disposal of rural residents in the central and western regions of China needs to be further optimized and improved.