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应用输出系数模型估算长江上游非点源污染负荷

Keywords: 长江上游,非点源污染,输出系数模型,地理信息系统

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Abstract:

本文在已有研究的基础上,利用输出系数模型,对2000年长江上游的非点源污染进行了空间模拟和负荷估算。模拟结果表明,在不考虑流域损失的情况下,2000年长江上游的TN负荷为194.737万t,TP负荷为8.365万t。就省份和水系二者而言,四川省以及金沙江水系和嘉陵江水系对长江上游的非点源污染贡献较大。就负荷强度而言,重庆市和嘉陵江水系单位面积的非点源污染负荷最高,应是今后重点治理地区。

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