[1]ZHANG Yan,GAO Xiang,PENG Bu-zhuo.Arsenic Distribution in Agricultural Land of Kunshan and Investigation of Its Contributing Factors[J].Research of Soil and Water Conservation,2009,16(04):34-38.
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Arsenic Distribution in Agricultural Land of Kunshan and Investigation of Its Contributing Factors
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 04
Page number:
34-38
Column:
Public date:
2009-08-20
- Title:
- Arsenic Distribution in Agricultural Land of Kunshan and Investigation of Its Contributing Factors
- Keywords:
- agricultural land; arsenic concentration; topography; oxidation and reduction potential; clay; Kunshan
- CLC:
- X53
- DOI:
- -
- Abstract:
- Arsenic (As) in agricultural soil will be transferred into food chain through plants and runoff so that human health is threatened by contaminated food or water. In order to determine the factors impacting the As concentration in agricultural soil, the agricultural lands in Kunshan were chosen as the study sites. The relationship between As concentration in soil and the geographical districts, land use types, soil chemical-physical properties were discussed. The regression equations about As concentration in soil and soil chemical-physical properties were set up by step regression. It is indicated that the topography and the environment of the oxidation and reduction can change the As concentration in soil. Therefore, the As concentration in upper of terrain was higher than that in lower of terrain and the As concentration in the dry land was higher than that in paddy field. Even in the dry land the As concentrations in the different use types were also different. The As concentration order from large to small in dry land soil was forest soil, uncultivated land and wasteland, vegetable garden, maize and watermelon fields, nursery of young stocks and flowers. In addition, the As concentration has positive correlation with the percent of clay and has negative correlation with pH, the organic matter, the total nitrogen and the percent of silt.
- References:
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