Research On Flatland Non-point Source Pollution Load Quantification

With the mid-point source pollution in the environment and gradually broughtunder control, non-point source pollution of water pollution has become an importanttopic in the study. Contribution rate and total control of environmental pollutants inwater non-point source pollutants flow rate of the water body is the key issue of thepresent study. From non-point source pollution research at home and abroad, themodel law is more common. Therefore, database modeling, parameter sensitivityanalysis, model selection and also the actual value of the numerical simulationmatching factor played a crucial role both in the research process.Non-point source pollution in China’s development is relatively slow. Therefore,database modeling incomplete, and there is no nationwide data set of parameters.Most studies are on the watershed or region within a small range of research. Basedon the above issues, the author comes with A&U system by partial least squaresregression of the data and the model calibration and validation parameters to basicwater purification capacity range up to estimate the rate of flow of pollutants and thecontribution of water bodies, as a basis for the allocation of pollutants and achievetotal non-point source pollution control.In this study a model for the SWAT model, the watershed in recent years Yin madry, flat, wet period runoff and pollutant migration and transformation to compare,then come to a variety of contaminants and the flow rate of the conversion rate. Shitou kou men reservoir in the back ground.soil conditions, climatic conditions andland use and other factors form the basin water pollution can directly affect thereservoir. And three simulated hydrological monitoring sections were fitted with theactual monitoring data comparison and found more applicable SWAT modelimproved the basin. Non-point source pollution load quantitative research Shi tou kou men reservoir,making the improved SWAT model can be widely applied in the northeast alpineregion. It also will model the data in plain area watershed non-point source pollutionfurther improvement, which can be based on this, water pollution load of totalnitrogen and total phosphorus pollutants quantify, and ultimately raise the totalamount of non-point source pollution control program.