Non-point Source Pollution Research Of Anda

At present, our country nonpoint source contamination concern has become in the water environment quality research to rescue treats the discussion the topic. As national staple commodity food production base's Heilongjiang Province, its agricultural nonpoint source contamination concern is more prominent. The control agriculture nonpoint source pollution, the protection ecological environment to realizes our country agriculture, the resources and environment coordinated development has the important theory significance and the practical significance. The present paper has conducted the research to the Anda nonpoint source pollution. with produced the dirt quantityaccording to the rainfall amount the relational share to output the method of correlates (Johnes output factor model) to make the improvement, and will improve the Johnes output factor model and the GIS union establishment computation model, has calculated the Anda 1995-2005 year each kind of pollutant load, and has calculated in 2005 the Anda various villages and towns pollutant load.Has made the improvement the BP network, causes it even more to adapt the nonpoint source pollution load estimate. Carries on the analysis with the wavelet transform pair pollutant, reduces the point source pollution to the BP network estimate precision influence. seeks out the traces the cluster model using the projection in 2005 various villages and towns pollution situation to carry on the appraisal to Anda, obtains various villages and towns relative pollution degree. Obtains various pollutant to the measure results influence.