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| Comprehensive evaluation of heavy metal for agricultural environmental soil of Jianghan-Dongting plain |
| 1.School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430074, China; 2.Wuhan Municipal Engineering Design and Research Institute, Wuhan, Hubei 430074, China |
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Abstract Based on the systemic investigation of pollution status by heavy metals of Cu, Pb, Zn, Cr, Cd, Hg and As to agricultural soil environment of Jianghan-Dongting plain, the characteristics of inorganic pollutant contents were analyzed. Based on the soil geochemistry background values, single-factor index method and Nemerow comprehensive pollution index method were used in comprehensive assessment of agricultural environmental soil heavy metal pollution condition in research area. The results show that the pollution of Hg is the most serious which is closely related to exogenous pollutants, and the pollution decreasing extent of other factors is Hg，Zn，As，Pb，Cd，Cu，Cr. The comprehensive assessment illuminates that the comprehensive pollution index has higher tendency compared to previous statistics， and the agricultural soil environmental quality of study area is slightly polluted.
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Received: 28 November 2014
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2015, Vol. 36 
