基于PLOAD模型的面源污染模拟研究

Study on simulation of non-point source pollution based on PLOAD model

采用PLOAD构建青龙河流域面源污染模型,在自动率定的基础上,通过人工调整关键参数,获得较为理想的模拟结果。得出BOD、总氮、总磷在子流域中的分布情况,并探讨了农药化肥施用量变化的影响,施肥量减少为现状的60%能够对流域非点源污染的控制起一定作用。

PLOAD is used to build a non-point source pollution model of Qinglong River Basin.On the basis of automatic calibration,through manual adjustment of key parameters,the simulation results are ideal.The distribution of BOD,TN and TP in subwatershed was obtained.The effect of the change of the application amount of pesticide and chemical fertilizer was discussed.The reduction of the application amount to 60%of the current situation can play a certain role in the control of non-point source pollution in the watershed.