RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2007, Vol. 16 >> Issue (3): 391-391.

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CADMIUM ACCUMULATION IN SOILS FOR DIFFERENT LAND USES IN THE DEVELOPED AREAS: A CASE OF KUNSHAN CITY IN JIANGSU PROVINCE

CHEN Yi, HUANG Xianjin, PENG Buzhuo, PU Lijie, ZHANG Jian   

  • Received:2006-02-28 Revised:2006-04-05 Online:2007-05-20

Abstract:

Pollution of heavy metals in soil is important for sustainable development, especially in the developed areas, because the soil not only influences the health of people, but also the environment through air and water. To obtain an overview of land use effects on the accumulation of Cd in the soil, 98 samples were collected from Kunshan. The average content of Cd in highyield, midyield, lowyield paddy field, vegetable land, garden land soil samples was higher than the background concentration of soil in Kunshan (0.110 mg/kg). The order of the average Cd content was as the followings: lowyield paddy field ＞ midyield paddy field＞garden land ＞ vegetable land ＞ highyield paddy field ＞ uncultivated land. Compared with standard (0.20 mg/kg), 20%, 18.75%, 11.11% and 9.09% in midyield paddy field, lowyield paddy field, garden land and vegetable land soil samples, exceeded the standard limit. According to this investigation, industrial activities and irrigation of sewage were the causes in the accumulation of soil sample Cd.

Key words: land use, soil, Cd, Kunshan City

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