浏阳大围山表层土壤微量元素含量及其质量状况评价

Trace Element Contents and Quality Status Evaluation of Topsoil in the Dawei Mountain in Liuyang City

为了解大围山的土壤重金属污染现状,开发高品质的名优特产,以湖南浏阳大围山山地表层土壤（0-20 cm）为研究对象,通过采集5种类型山地土壤表层土样,分析测定土壤中微量元素铜锌镍铅含量状况。结果表明：Cu、Zn、Ni、Pb全量分别为10.66-40.98、43.49-119.39、7.06-38.55、32.12-68.82 mg/kg;含量的变幅分别为5.41%-50.89%、2.57%-40.76%、5.28%-59.79%、8.21%-24.23%。5个不同海拔的土壤类型中除了黄红壤处于尚清洁状态,其余土壤都达到了轻污染水平,其中灌丛草甸土的综合污染指数最大。

To know the current situation of soil heavy metal pollution in the Dawei Mountain and develop famous specialty with high quality,5 types of topsoil（0 - 20 cm） from the Dawei Mountain in Liuyang,Hunan Province,were taken as research object to detect the contents of Cu,Zn,Ni and Pb.The results showed that the total contents of Cu,Zn,Ni and Pb were 10.66 - 40.98,43.49 - 119.39,7.06 - 38.55 and 32.12 -68.82 mg/kg respectively.The content variation ranges were 5.41% - 50.89%,2.57% - 40.76%,5.28% -59.79% and 8.21% - 24.23% respectively.Among the 5 soil types of different altitudes,only the yellow-red soil was clean,and the other 4 were all lightly polluted.The comprehensive pollution index of meadow soil in scrub was the highest.