Research of pollution load in Xiangxi River Basin of Three Gorges Reservoir Area

According to the pollution characters of Xiangxi River in Three Gorges Reservoir Area, a fuzzy prediction model and a model of relationship among precipitation, sediment discharge and pollution load, are established to forecast the point source pollution load and the nonpoint source pollution load in Xiangxi River Basin. The results show these models are better than the traditional ones and they are applicable for Xiangxi River Basin. Moreover, the permissible pollution load in Xiangxi River is initially analyzed and calculated with different boundary conditions of the Three Gorges Reservoir.