昆明市松华坝水库流域氮磷非点源污染产生负荷估算

摘要

以松华坝水库为研究对象，对水库水源区污染负荷产生量和入库量进行估算，结果表明：水源区各种污染源产生的负荷量为：TN ＝527.41t／a，TP ＝144.24t／a。畜禽粪便是流域氮磷非点源污染的最大产生源。各污染源产生的 TN 负荷量排列为：畜禽粪便＞农业固废＞生活垃圾＞化肥流失＞水土流失＞生活污水；TP 负荷量情况排列为：畜禽粪便＞农业固废＞化肥流失＞水土流失＞生活垃圾＞生活污水。%Theloads of nitrogen and phosphorus generated from non -point sources in the Songhuaba Reservoir wa-tershed were estimated.The results showed that the loads of nitrogen and phosphorus were 527.41 tons per year and 144.24 tons per year respectively.Livestock and poultry manure was the major non -point sources of nitrogen and phosphorus.Livestock and poultry manure contributed the most nitrogen,followed by the agricultural solid wastes and the domestic wastes and the fertilizer loss and domestic wastewater.The most contributor of phosphorus was livestock and poultry manure as well,followed by the agricultural solid wastes.The fertilizer loss and the water and soil loss contributed less to the phosphorus pollution.The domestic wastes and wastewater were the least con-tributors.