Research On Agricultural Non-point Source Pollution In Midsection Of Huaihe River Huainan City Based On GIS

Agricultural non-point source pollution is a ubiquitous environmental problem nowadays, and it is the most important factor for water environmental deterioration and Lake Eutrophication in China. It's very significant in both theory and realism to control agricultural non-point source pollution and protect our ecological environment for realizing the harmonized development of resource, environment and agriculture in China.In this paper, a representative region area of Huaihe River is choosed as the region of study base on analyzing and summarizing of many literatures. The actuality of agricultural non-point source pollution is analyzing ,existent problems of non-point source pollution is pointed out by survey, collect and tidy of basic data on the representative area .The concentrations of nitrogen and phosphorus are menstruated and analyzed in the rainfall runoff of the area. probe into the offering rate to environmental pollution of nitrogen and phosphorus of different land utilization type in the region of interest, and by use of the GIS software to dispose the foundation drawing, abstract the thematic map layer, which are used for the assertion of spatial parameter in the agricultural non-point source pollution model, and put forward the prophylactic-therapeutic measures of agricultural non-point source pollution, including the best management practices (BMPs) as well as strengthen the prophylactic-therapeutic measures for pollution source, put forward the prospect of prevention and cure the agricultural non-point source pollution in the end.Through researching the fore-mentioned, it is expected that the model and methods can provide scientific basis for the water resources administration and decisions of the Huaihe River which has great practical significance.