广东省东江流域典型小流域非点源污染物流失规律研究

Law of Non Point Source Pollutants Losses in a Typical Small Watershed of Dongjiang Drainage Basin of Guangdong Province

分析了广东省东江中游的杨子坑小流域主要非点源污染物氮、磷随降雨径流过程的动态变化规律，建立了降雨量—径流量、径流量—污染物负荷输出量之间的数学统计模型，并用该模型对流域的非点源污染负荷总量进行了计算，得出了流域非点源污染物流失规律。

The main non point source pollution loads, nitrogen and phosphorus, and their dynamical variation with runoff process in Yangzikeng watershed, the middle reaches of Dongjiang river, Guangdong province, had been analyzed. The statistical models of precipitation runoff and runoff pollutants yields had been gained. The total amounts of non point source pollution charges had been calculated on the basis of these models, and the loss law of non point pollution charge in this watershed had beed obtained.