酸性土壤重金属含量的相关分析与修复——以湖南壶瓶山自然保护区为例

Study on Correlation and Remediation of Acid Soil Heavy Metal——A Case Study of Hupingshan Natural Protectorate

为了掌握酸性土壤中重金属的影响因素及其相关性,以湖南壶瓶山自然保护区土壤为研究对象,对Cd、As、Pb、Zn、Cu、Cr、Ni和Hg等8种重金属进行了野外调查和实验室监测分析。结果表明:均受到Cd、As、Pb、Zn、Cu、Ni轻污染,重金属污染程度由高到低依次为As>Ni>Pb>Cu>Cd、Zn>Cr>Hg,空间分布不均匀程度由大到小依次为Cd>As>Pb>Zn>Cu>Cr>Ni>Hg;Cd的含量与pH值呈正相关性;As的含量与F的含量呈正相关性,Cr、Hg的含量与F的含量呈负相关性;Cr、Cd的含量与海拔高度呈正相关性;Cu与As、Cu与Ni、Hg与Cr呈正相关性,Zn与Pb、As与Ni呈负相关性。

In order to grasp the influence factors and correlation of the heavy metals in acid soils,taken the soils of Hupingshan natural protectorate as tested object,the eight kinds of heavy metals,including Cd,As,Pb,Zn,Cu,Cr,Ni and His,were investigated by sampling outside and analyzed in laboratory.The results showed that the soils were slightly polluted by Cd,As,Pb,Zn,Cu and Ni,and the degrees of pollution were in order of As Ni Pb Cu Cd,Zn Cr Hg,because of the uneven of distribution in space,the sequence order was Cd As Pb Zn Cu Cr Ni Hg.There were positive correlations among Cd and pH;As and F;Cr,Cd and altitude;Cu and As,Ni;Hg and Cr.There were negative correlations among Cr,Hg and F;Zn and Pb;As and Ni.