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湘江株洲段丰水期镉污染负荷总量测算及分配

Keywords: 水质,Cd,污染负荷总量,湘江

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Abstract:

以2010年8月湘江干流株洲段代表性断面水质与底泥监测资料以及其他资料为基础,采用WASP7模型模拟该江段丰水期镉浓度,并进行镉污染负荷测算与分配。研究结果表明,WASP7模型较好地重现了镉浓度的变化规律,8月份该河段上游镉入流量2446.33kg,下游出流量3076.44kg,区间增量630.12kg,其中点源负荷量241.67kg,占38.4%,面源负荷量304.49kg,占48.3%,内源负荷量为83.96kg,占13.3%。

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