Abstract
Soil samples of 0-5cm from 18 sampling sites including different functional zones of Qingdao, China were collected and analyzed. The results showed the average concentration of Cu, Pb, Zn and Ni in soil were up to 55.96,174.37,57.89, and 31.16mg/kg respectively, which were much higher than their natural background values. The average Igeo values were in the increasing order of Ni(0.638) <Pb(1.428)<Cu(1.458)< Zn(3.03). Zn was high contamination, while Pb,Cu were moderated contamination. By hierarchical cluster, eighteen plots could be divided into five groups.(a)(A3,C1),(C4,C5,E1);(b)(B2,E2),(D3,D2);(c)(D1,D4,A2),(A1,C6); (d) (A2,C2),B1; (e)C3; The MDS analysis showed some rules in the graph. From top to bottom of longitudinal axis means low contents to high contents of Cu,Pb. From left to right of horizontal axis means low contents to high contents of Zn. Along the oblique axis, the values of Igeo were from high to low.
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