金川矿区土壤重金属污染环境评价

金昌是我国重要的镍铜生产基地，然而矿山的开发活动对矿区及周围地区造成可很严重的土壤重金属污染。本文以金川矿区为主要调查区，测定了矿山及周边土壤的重金属含量，采用单因子污染指数、内梅罗指数、改进内梅罗指数和潜在生态风险指数4中评价方法对调查区进行重金属污染评价，结果表明调查区内二矿区及周边的铁路和工业厂区受到一定的污染，其他地区并未受到污染，矿山的开采和矿石的运输是造成调查区土壤重金属污染污染的主要原因。

Environmental Evaluation of Soil Heavy Metals Pollution in Jinchuan Mining Area

Jinchang is an important production base of nickel and copper in China, however, heavy metal polluted soils have been a serious problem to the mines and surrounding field. This paper regarded Jinchuan mine as survey area, determined the content of heavy metals in soil, evaluated heavy mental pollution level by single factor pollution index, Nemerow index, improved Nemerow index and potential ecological risk index. The results indicated the survey area is rarely polluted by heavy metals except the second stage mining and surrounding railway and plant area. Mineral mining and mineral haulage are the main reason which cause heavy metal pollution of the soil in survey area.