Impact of Geographical Character on Water Pollution in Dianchi Lake Basin

The impacts resulted from geographical characters including terrain,water system,land utilization and the shape of the lake on water pollution in Dianchi lake basin are analyzed.The basin terrain leads to the Dianchi lake being the receiving water body of the whole basin water containing the pollutants,which leads to serious polluted water into the lake.The land utilization style produces lots of pollutants which are easy to flow into the lake.The shape of the lake makes the pollutants stay longer and release easier in sediment of Dianchi lake.