J4 ›› 2011, Vol. 41 ›› Issue (1): 222-227.

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Comparison of Typical Interpolation Methods for Pollution Evaluation of Soil Heavy Metals in Yicheng District, Hefei

LI Xiang-ling1, ZHANG Ying-hui1|2, YANG Shan-mou1, YUAN Feng1, ZHOU Tao-fa1   

  1. 1.School of Resources and Environmental Engineering, Hefei University of Technology, Hefei230009, China;
    2.Hefei Sikang Environmental Scientific and Technological Consulting Company Ltd., Hefei230001, China
  • Received:2010-06-20 Online:2011-01-26 Published:2011-01-26

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Abstract:

Spatial interpolation played an important role in  spatial distribution of heavy metals in soil and pollution assessment. Soil sample contaminated by Cu,Pb,Zn,Cd,As and Hg elements in Yicheng district , Hefei were collected and analyzed. We validated and appraised the representative spatial interpolation methods  such as inverse distanced weighted (IDW), radial basis function (RBF) and ordinary kriging (Kriging). The results showed that Kriging exhibited best effect in Cu, Pb and As, IDW in Zn and RBF in Cd and Hg.

Key words: spatial structure, interpolation, heavy metals, soil, Yicheng, Hefei

CLC Number: 

  • X825
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