松华坝水库上游牧羊河氮、磷主要来源研究

牧羊河是昆明松华坝水库的一条重要支流,其水质的好坏直接关系到松华坝水库的水质。面源污染是影响水库水质的主要因素。通过对流域内农田径流、农村生活污水以及牧羊河丰水期与枯水期水质的测定,对总氮、总磷指标进行了评价和分析,得出了牧羊河氮、磷主要来源于松华坝水源区面源污染,且流域内面源污染对牧羊河水体总氮含量影响较大。

Main Source of Nitrate and Phosphate Pollutant in Muyang River of Songhuaba Reservoir

Muyang river is an important branch of Songhuaba reservoir, and the water quality of Muyang river has a direct relationship with the water quality of Songhuaba reservoir. Non-point source pollution has a mainly effect on the water quality of reservoir. Through monitoring the water quality of farmland runoff, rural domestic sewage and Muyang river in wet and dry season, we evaluated and analyzed the contaminant index of TN and TP. The results showed that nitrate and phosphate of Muyang river are mainly from non-point source. It proves that non-point source pollution in water source of Songhuaba reservoir has a rather great influence on the TN of Muyang river.