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Analysis on Agricultural Non-point Source Pollution in Sub-watershed with Agricultural Non-point Source Model

MENG Chun-hong,ZHAO Bing(College of Resources and Environmental Sciences,Wuhan University,Wuhan 430072,China)  
Jiulong River is an important drinking water source for the cities of Longyan,Zhangzhou and Xiamen.At the same time,this basin is also a coastal one.At present,non-point source pollution, especially agricultural non-point source pollution in the upstream has been particularly significant,so this study on agricultural non-point source pollution in Jiulong River basin has important realistic meaning and theoretic value.AGNPS(agricultural non-point source) model is a computer model specialized for simulating soil erosion,nutrient drain and predicting agricultural non-point source pollution of a sub-watershed.Wuchuan catchment in the upstream of Jiulong River was selected as a study site.The AGNPS model was adopted to simulate agricultural non-point source pollution.According to actual data,the AGNPS model was confirmed to be suitable in this basin.The studies show that predicted results coincide with observed results,so the paper suggests that this model is suitable for prediction and assessment of nitrogen and phosphorus losses in red soil hilly areas,southern China.
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