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On Heavy Metal Pollution and Ecological Risk Assessment in Surficial Soil of Shuangqiao Rural of Neijiang City in Sichuan Province

XU Yun-xia et al(Chengdu University of Technology,Chengdu,Sichuan 610059)  
Soil environmental quality of Shuangqiao rural of Neijiang City was assessed by Nemerow index and potential ecological risk index,and each heavy metal element and its grade distribution of integrated pollution was analyzed based on GIS technology.This area was the slight pollution area based on Nemerow index and the slight danger area based on ecological risk assessment.
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