香溪河流域非点源总氮总磷负荷估算  

Estimation of Total Nitrogen and Phosphorus Load of Non-Point Source in the Xiangxi River Basin

作　　者：杜学才 胡波[2] 童晓霞[2] 

机构地区：[1]云南省滇中引水工程建设管理局昆明分局,云南 昆明 [2]长江水利委员会长江科学院,湖北 武汉

出　　处：《水资源研究》2020年第3期301-309,共9页Journal of Water Resources Research

摘　　要：以三峡库区香溪河流域为研究区,利用现场观测实验及查阅文献等方法确定不同污染源负荷模型输出系数,估算得出香溪河小流域土地利用、畜牧养殖及居民生活三种污染源负荷。结果表明,林地和旱地是土地利用污染源负荷中贡献率最大的,香溪河小流域总氮负荷量(TN)由高到低依次为畜牧养殖污染 】土地利用污染 】居民生活污染,而总磷负荷量(TP)由高到低依次为土地利用污染 】畜牧养殖污染 】居民生活污染。因此,选择合理的农田管理措施,有效控制林地、旱地施肥量及畜牧养殖污水排放,是防控三峡库区香溪河流域非点源污染的关键。Taking the Xiangxi River Basin of the Three Gorges Reservoir Area (TGRA) as the research area, the output coefficients of different pollution source load models were determined by means of field observation experiments and literature review, and the three pollution source loads of land use, animal husbandry and residential life in the small Xiangxi River Basin were estimated. The results indicate that forest land and dry land are the biggest contribution factors in the load of land use pollution sources. The order of nitrogen load of different pollution sources from high to low is livestock and poultry breeding, land use, domestic pollution, while the order of phosphorus load of different pollution sources from high to low is land use, livestock breeding, domestic pollution. Therefore, reasonable farmland management, optimized control methods of forest and dry land fertilization and sewage discharge of livestock and poultry breeding are of great importance to the prevention and control of total nitrogen and phosphorus in the Xiangxi River basin of TGRA.

关 键 词：输出系数模型 现场观测 数值模拟 非点源污染 总氮总磷 

分 类 号：F32[经济管理—产业经济]