Spatial variation of the content of soil heavy metals in Kunshan City of Jiangsu Province was studied. The results show that the average contamination index of Ni, Zn and Hg is more than 1, and that of Hg is the biggest one, Hg is the main contamination; compound contamination of soil heavy metals is severe, integrated contamination index gets to 1.52; variance coefficients of Hg, Cd, Pb, Cu are bigger than that of others. Integrated contamination index of total amount of soil heavy metals in different function areas decreases as follow: area of chemical factory (1.84)> area of aquiculture and poultry (1.54)> area of vegetable plot (1.08) > area of printing, dyeing, and paper-making (0.99). Integrated contamination index of total amount of soil heavy metals in different physiognomy areas decreases as follow: plain area in middle (1.71)> low area in north (1.57)> lake area in south (0.99). Heavy metals have the character of top gathering and sub-top gathering in soil profiles, and the content of heave metals in top layer is higher in general, thus leads to the increasing of risk to environment.
WAN Hong-You, ZHOU Sheng-Lu, ZHAO Qi-Guo
. Spatial Variation of Content of Soil Heavy Metals in Region with High Economy Development of South Jiangsu Province[J]. SCIENTIA GEOGRAPHICA SINICA, 2005
, 25(3)
: 329
-334
.
DOI: 10.13249/j.cnki.sgs.2005.03.329
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