Spatial Distribution Characteristics of Soil Heavy Metals in Daxing District,Hefei,Anhui Province

By using the geo-statistical methods,the quantitative description of the spatial structure characteristics of soil heavy metals in Daxing district of Hefei city were given and the main factors for the spatial structures were investigated.The results showed that the experimental variogram models of soil Cu,Pb,Zn,Cd,As and Hg were better.The six heavy metals had significant spatial variability,influenced by the human activities greatly.In the area,the large number of industrial and mining enterprises and agricultural activities were the main reasons for the heavy metals accumulation in the soil.At the same time,there is a potential risk of mixed noxious contamination of heavy metals.