五指山茶园表层土壤重金属污染危害评价  

Hazard Assessment on Heavy Metal Pollution in Surface Soil from Tea Gardens of Wuzhishan

作　　者：王鹏[1] 赵志忠[1] 王军广[1] 张忠伟[1] 鲁双凤[1] 

机构地区：[1]海南师范大学地理与旅游学院,海南海口571158

出　　处：《安徽农业科学》2011年第13期8025-8027,共3页Journal of Anhui Agricultural Sciences

基　　金：海南省自然科学基金项目(40879);海南省教育厅项目(HJKJ2010-28);教育部留学回国人员科研启动基金资助项目;海南师范大学"地图学与地理信息系统";"自然地理学"重点学科联合资助项目

摘　　要：[目的]评价五指山茶园表层土壤重金属污染的危害程度。[方法]采样分析五指山茶园表层土壤重金属(Cr、Ni、Cu、Zn、As、Cd、Pb)的平均含量及富集状况,分别以现代工业化以前沉积物中重金属的全球最高背景值和我国《土壤环境质量标准》的一级自然背景值为参比值,采用潜在生态危害指数法对五指山茶园表层土壤重金属的富集系数和生态危害系数以及生态危害指数进行了评价。[结果]以2种背景值为参比得出的重金属污染水平相近,Cd和Pb是对五指山茶园表层土壤生态环境具有潜在影响的主要重金属元素。[结论]五指山茶园表层土壤重金属的潜在危害程度为轻微-中等污染水平。。[Objective] The aim of this study is to investigate hazard assessment on heavy metal pollution in surface soil from tea gardens of Wuzhishan.[Method] The average content and accumulation status of heavy metals including Cr,Ni,Cu,Zn,As,Cd and Pb in surface soil from tea gardens of Wuzhishan was collected.Taking the highest global background value of heavy metals in sediments before modern industrialization and the first-class natural background value of Soil Environment Quality Standard in China as the reference value respectively,the accumulation or ecological hazard coefficient and the ecological hazard index of heavy metals in surface soil from tea gardens of Wuzhishan were assessed by potential ecological risk index.[Result] The pollution level with two kinds of background values as the reference value was similar,while Cd and Pb were main heavy metals which had potential impact on ecological environmental in surface soil from tea gardens of Wuzhishan.[Conclusion]Theresult revealed that potential risk level of heavy metals in surface soil from tea gardens of Wuzhishan belongs to the slight-medium pollution level.

关 键 词：五指山 茶园 重金属 污染危害 

分 类 号：X131.3[环境科学与工程—环境科学]