摘要
为了给流域污染物总量控制及分配工作提供理论依据,利用SWAT模型分析了大宁河巫溪水文站控制流域污染物负荷分布特性,结果表明:耕地是泥沙和总磷污染的主要来源,泥沙和总磷负荷分别占整个流域的95%和50%以上;后溪河流域是整个流域内污染负荷最高的支流流域,泥沙贡献率为46.02%,总磷负荷贡献率为60.15%;流域西南部的土壤侵蚀现象较为严重,尤其是子流域17和20;东溪河内子流域7是总磷负荷较高的地区,应重点进行控制。
To provide theoretical basis for the work of pollutant total amount control and allocation,the SWAT model is run to analyse the characteristics of the pollution load distribution in Daning River watershed.The simulation results show that cultivated land is the main source of sediment and TP,sediment load accounts for 95% of total load and 50% for total phosphours（TP）.Houxi River watershed,where sediment load accounts for 46.02% of the whole basin load and 60.15% for TP,takes on a higher pollutant load than the other two tributaries. The soil erosion is much serious in the southwest of the basin, especially in sub-basin 17 ＆ 20. Sub-ba- sin 7 possesses the highest TP load in Daning River watershed, and should be controlled preferentially.
出处
《环境工程学报》
CAS
CSCD
北大核心
2009年第12期2153-2158,共6页
Chinese Journal of Environmental Engineering
基金
国家水体污染控制与治理科技重大专项(2008ZX07106-001)
关键词
SWAT模型
大宁河流域
泥沙
总磷
总量控制
SWAT model
Daning River watershed
sediment
total phosphours
total amount control
