Analyzing 183 soil samples of 16 counties in Chongqing Three Gorges reservoir area

it showed content of soil heavy metal of water-level-fluctuating zone in Three Gorge reservoir area was better than soil environmental standard grade 3.The mean Cu content was 37.0 mg/kg

ranging from 10.7 to 80.2 mg/kg.The mean Pb content was 29.3 mg/kg

ranging from 14.6 to 51.8 mg/kg.The mean Zn was 72.7 mg/kg

ranging from 47.5 to 93.3 mg/kg.The mean Cd content was 0.321 mg/kg

ranging from 0.081 to 0.864 mg/kg.The mean Hg content was 0.059 mg/kg

ranging from 0.032 to 0.204 mg/kg.The mean As was 8.65 mg/kg

ranging from 4.63 to 12.7 mg/kg.There is a remarkable positive relation between Cu and Cd. The relativities among other heavy metals are not obvious. The effect of pH to heavy metals is small. The pollution type is Cu-Cd. By the method of system cluster

the distribution of soil heavy metal are regularity. It can be disparted three parts(upper

middle and down reaches).