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《Urban Environment & Urban Ecology》 2007-05
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Investigation of Pb Pollution of Road's Green Land and Control Measures in Linfen

SHAN Yong-jie1,ZHANG Mei-ping2,BAI Zhong-ke3(1.College of Urban and Environment Sciences,Shanxi Normal University,Linfen 041004,China;2.College of Life Sciences,Shanxi Teachers University,Linfen 041004,China;3.Department of Land Science and Technique,China University of Geo Science,Beijing 100083,China)  
The present pollution status of the Pb was studied mainly in the green lands in Linfen,a city in Shanxi Province.The results indicated that the most contaminated area was the surface soil in the greenbelt along the urban roads,the Pb content in the soil reached to 150 mg/kg.The pollution degree of the central greenbelt along the urban roads was the greatest,the farmland outside the central annular road was secondary and the cropland around the country roads was little relatively.In the same spot,within 100 meters the soil was less polluted as it was farther away from the road.As the soil depth increased,the degree of Pb pollution reduced.The Pb mainly came from the auto-off gas,the dirt of the tyre and the mineral,as well as the dirt from the constructions.The executive measures should be strengthen for the pollution treatment.The soil dessing replacement should be adopted for the polluted soil of the greenbelt.At present,the method of decreasing the degree of Pb pollution in the soil is to increase the organic content of the soil in order to make the Pb fixed as more as possible for the farmland pollution soil.
【Fund】: 国家自然科学基金资助项目(40071077)
【CateGory Index】: X53
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