Analysis on aquatic environment of Anhui Province in Xinanjiang River watershed

Statistical analyses of the production amounts and river load of point source pollution and non-point source pollution show that the river load ratio of point source pollution is about 2-3 times of that of non-point source pollution within the Anhui Province in Xinanjiang River watershed,suggesting that point source pollution still remains the main source,while non-point source pollution cannot be ignored,particularly for total phosphorus,almost 2/3 from non-point sources.Contribution of non-point source to the Xinanjiang River watershed in Anhui Province is obviously increasing as compared with that to the Huaihe River watershed and the Yangtze River watershed in Anhui Province.For pollution control in the watershed both point source pollution and non-point source pollution have to be taken into account.In order to achieve actual effects,more attention must be paid to the control of non-point source pollution when point source pollution is not serious.