Abstract:
To assess pollution status of heavy metals in arable soils in area of Xinjiang Zhundong surface coal mine,this paper studied the pollution status of heavy metals including as Hg、As、Cu、Ni、Cr、K、Pb、Zn(0~30cm) comprehensively and respectively,using methods of single factor index,comprehensive pollution and Nemero index.The pollution status of heavy metals in arable soils in this area was analyzed using this model considering spatial distribution of soil heavy metals,accumulation characteristics of heavy metal in crops,and comprehensive pollution analysis based on GIS.The results showed that the single factor index of heavy metals in soil indicates that in the three soil surface Ni、Cr、Zn are the slight pollution,evaluation of the remaining elements are clean;Hg in 0~10cm,10~20cm soil pollution largest span value,and the maximum reached heavy pollution.Nemerow comprehensive pollution index assessment that the Hg,As,K element layers belong to the severe pollution,other elements of a lesser degree of pollution,each pollution levels were similar.Comprehensive pollution evaluation noted 0~10cm,10~20cm soil contamination clean,20~30cm soil is light pollution.The study area is located in the heavy pollution areas Wucaiwan coalmine(research northwestern district),there are so many pollutants in this area is stacked further precipitation,while Jiangjunmiao coalmine(southeast of the study area) contamination to a lesser extent.This study local conditions to develop soil pollution control measures,have a very important practical significance.