Analysis on non-point pollution source in the conservative zone of the upper reaches of Huangpu River

Non-Point pollution source in conservative zone of the upper reaches of Huang-Pu River has become an important factor influencing the water quality.This paper analyzed six types of primary non-point pollution sources,and took CODCr,TN and TP as proxies to study the pollution changes of the non-point pollution source with the equivalent standard pollution load method from year 2000 to 2005.The research results indicated that the excretion of animal husbandry,the surface runoff and living sewage contributed most to the pollution of the water in 2000,while the surface runoff becomes the main contributor to the pollution and the living sewage becomes less important in 2005.