临汾市道路绿化地铅污染现状调查及治理措施  

Investigation of Pb Pollution of Road's Green Land and Control Measures in Linfen

作　　者：陕永杰[1] 张美萍[2] 白中科[3] 

机构地区：[1]山西师范大学城市与环境科学学院,临汾041004 [2]山西师范大学生命科学学院,临汾041004 [3]中国地质大学(北京)土地科学技术系,北京100083

出　　处：《城市环境与城市生态》2007年第5期20-22,共3页Urban Environment & Urban Ecology

基　　金：国家自然科学基金资助项目(40071077)

摘　　要：以山西省能源城市——临汾市区为研究区,调查了市区道路绿化带、外环路两侧农田、乡村公路两侧农田的铅污染现状。结果表明:临汾市土壤污染最严重的地区发生在市区绿化带表层土壤中,全铅含量为150 mg/kg左右。其污染程度为:市区道路绿化带>外环路两侧农田>乡村公路两侧农田;在同一地点,在100 m范围内污染程度随着离公路的距离增加而减弱;随着土层深度增大,土壤铅含量逐渐降低。其污染源主要为汽车尾气、轮胎粉尘和矿石粉尘,另外还可能有建筑物粉尘。杜绝污染应从加强行政管理入手;对市区道路绿化带污染土壤,适宜采用客土置换法,农田污染土壤目前只能提高有机质含量,增强土壤固定Pb的能力。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.

关 键 词：临汾市 道路绿化地 铅污染 治理措施 

分 类 号：X53[环境科学与工程—环境工程]