Estimating Non-point Source Pollution Loads of a Small Watershed in Northeast China with AnnAGNPS

摘要

Non-point source pollution has became a major water pollution source in Northeast China. A small typical agricultural watershed was selected to test the validity of the annualized agricultural non-point source (AnnAGNPS) model in Northeast China. The best available data were assembled in the analysis. The model validity was tested by nitrogen and phosphorus concentration data. A good correlation was observed in predict nitrogen concentration while a not satisfactorily result was got in predict phosphorus concentration. The model's performance released the model could be used in predicting nitrogen NSP load in Northeast China but not suitable for predicting phosphorus NSP load.