鄱阳湖湿地重金属污染地质累积指数与潜在生态危害指数评价

Apply Geoaccumulation Index and Potential Ecological Risk Index to Assess Heavy Metal Pollution in the Wetland of Poyang Lake

本文用地质累积指数和潜在生态危害指数对鄱阳湖重金属污染进行评价,结果表明:(1)评价结果表明鄱阳湖区重金属污染主要为Cu污染。鄱阳湖重金属污染的主要来源是德兴铜矿,其中Cu当然是主要污染物,因此,评价结果与实际情况是吻合的。(2)Cu、Zn、Cd污染源相同且来源于德兴铜矿,Pb表现为面源污染。湖区Cu、Zn、Cd分布均表现出从饶河段至湖口逐步降低的趋势,且Cu、Zn、Cd在土壤中的含量呈现显著的相关性和偏相关性,可以推论Cu、Zn、Cd污染源相同且来源于德兴铜矿。Pb在湖区均匀分布表现为面源污染,这可能与湖区Pb污染来源于船舶燃油有关。

This paper Apply Geoaccumulation Index and Potential Ecological Risk Index to Assess Heavy Metal Pollution in the Wetland of Poyang Lake, the result is ： 1. From assessment by index of geoaeeumulation and index of ecological risk, Cu is the most important pollution in Poyang lake . 2. The content distributing of Cu, Zn, Cd put up a tide that the content depressed from Raohe river to Hukou, and the content of Cu, Zn, Cd in water and soil take on correlate and partial correlate , so we can deduce that the fountain of Cu, Zn, Cd in Poyang lake is sameness and these pollution roots in Dexing copper mine . Pb equally distributes in Poyang lake.