中文摘要：

为了探明小区内不同坡度和种植模式对径流污染的影响,以寻求适合坡地条件下控制径流污染的有效途径,通过径流小区监测和径流污染物浓度测定,并结合污染负荷估算法和水污染综合指数法评价径流污染的差异,结果表明,坡度对总氮、总磷、COD以及泥沙在径流中的浓度有一定的影响,在相同种植模式条件下,25°小区中产生的各个径流污染物浓度都明显高于15°小区,而径流污染物浓度在不同种植模式下浓度大小依次为,坡改梯＋经果林〉玉米＋红苕〉豆角＋红苕〉经果林幼林,而通过采用降低坡度和坡改梯结合种植经果林的治理措施,将水土保持工程措施和农业措施相结合,对抑制径流污染有较好的作用。

英文摘要：

For the purpose of exploring the influence of different planting patterns on the runoff contamination and finding effective control measures, by measuring the pollutant concentration of surface runoff, through motoring the pollution of the plots, and combing the method of loading pollution and water pollution comprehensive index assessment, the study shows that the slope has some influence with the concentration of TP, TN,COD and sediment, and in the condition of different slope and same planting pattern, the concentration of all runoff pollution in 15^oplot was higher than the 25^o. The results also indicated that the concentration of runoff contamination from lowest to highest in different planting patterns as follow： terracing and fruit〉 intercropping of corn and potato〉 intercropping of beanstalk and potato〉fruit. Slope and vegetation coverage were important factors of influencing runoff contamination on sloping land. Terracing on slope land was an effective strategy to reduce soil erosion and control runoff pollution.