The Spatial Distribution Law of Non-point Pollution by Livestock and Its Application in Songhua River

The distributed water quality model is developed for simulating chemical oxygen demand of the spatial distribution law of non-point pollution by livestock. Statistical data by government department is a traditional method to get non-point pollution data, while it contains much uncertainty. This paper focuses on the relation between hydrological cycle and pollutants into the river and plots a figure for simulation of non-point pollution by livestock by GIS, which can display that where is high-density of non-point pollution by livestock. The analysis is useful to guide the water environment pollution prevention and treatment after the pollutant in high- density area is cut from water function area.