基于GIS的三江平原生态环境重金属污染评价研究

应用GIS研究三江平原生态环境单因子和综合重金属污染评价结果表明 ,三江平原生态环境单因子重金属污染仅零星地区出现轻度污染 ,但该区Pb和Cr元素污染较分散且分布范围较广 ;三江平原生态环境重金属综合污染基本不存在 ,仅南部穆棱、西北部萝北、中部集贤和双鸭山、东部虎林和绕江交接处几片地方出现轻度污染 ,且综合污染指数一般 <1 2 ,污染范围仅占全区的 3 5 % ,表明该区生态环境地球化学质量较优越

Pollution evaluation of the heavy metal elements on the eco-environment of the Sanjiang Plain based on GIS

The heavy metal elements pollution on the eco-environment of the Sanjiang Plain in Heilongjiang Province was evaluated based on GIS. The results show that the geochemistry environment of the Sanjiang Plain in Heilongjiang Province is good. There is no pollution in most parts of the region. The pollution distribution of Pb and Cr elements is wide. Only Muling in the south, Luobei in the northwest, Jixian and Shuangyashan in the middle and Hulin in the east connecting with Raojiang River show a slight pollution. The pollution index is no more than 1.2, and the pollution regions occupy 3.5% of the total area. All of these show that the geochemistry environmental quality of the Sanjiang Plain is good.