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本项目运用SWAT模型对水功能区农业面源污染产输出特性及规律进行研究,给出了黄淮地区农业面源的人河规律,分析了农业面源中氮磷与水功能区水质的相关性,分别通过统计农业发展数据定性分析和模型输出成果定量分析评价农业面源对水功能区水质达标水质安全影响。黄淮地区农业面源污染特征及规律研究结果表明:坡度在4度以下的氮素和磷素流失量无明显规律,在坡度变化不大的平原地区,
The project uses the SWAT model to study the output characteristics and rules of agricultural non-point source pollution in the water functional area, and gives the human-river rule of agricultural non-point source in Huanghuai region. The correlation between N and P in agricultural non-point source and water quality in water functional area By qualitative analysis of agricultural development data and quantitative analysis of output results of the model, the impact of agricultural non-point source on water quality safety of water functional areas was evaluated. The study on the characteristics and laws of agricultural non-point source pollution in Huanghuai area showed that there was no obvious regularity of nitrogen and phosphorus loss under the slope of 4 degrees. In the plain where the slope did not change much,