海南岛西部地区砖红壤中重金属分布特征及潜在生态风险评价  

Distribution Characteristic and Potential Ecological Risk Assessment of Heavy Metals in Latosol in the Western Area of Hainan Island

作　　者：王鹏[1] 赵志忠[1] 王军广[1] 张忠伟[1] 张子川[2] 

机构地区：[1]海南师范大学地理与旅游学院,海南海口571158 [2]福建师范大学地理科学学院,福建福州350007

出　　处：《安徽农业科学》2011年第9期5210-5212,5339,共4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"重点学科项目

摘　　要：[目的]对海南岛西部地区砖红壤中重金属元素进行生态地球化学调查和生态风险评价。[方法]对海南岛西部地区砖红壤中的Cr、Cu、Zn、As、Cd、Pb 6种重金属的含量进行分析,并用单因子指数法和Hakanson生态风险指数法评价了砖红壤中重金属综合污染效应。[结果]海南岛西部地区砖红壤中Cr、Cu、Zn、As、Cd、Pb的平均含量分别为65.57、35.16、93.56、8.50、0.24、79.29 mg/kg。其中主要的重金属污染因子是Pb,各金属影响因子的顺序为Pb>Cu=Zn>Cr>As>Cd;各种重金属的潜在生态危害系数大小顺序为Pb>Cd>Cu>As>Cr>Zn;潜在生态风险指数(RI)平均值为45.14,属于低生态危害范畴。[结论]海南岛西部地区砖红壤中重金属污染属于轻微污染。[Objective] The paper was to carry out ecological geochemical survey and ecological risk assessment on the heavy metals in latosol in western area of Hainan Island.[Method] Then contents of six heavy metals including Cr,Cu,Zn,As,Cd and Pb in latosol in western area of Hainan Island were analyzed,single-factor index method and Hakanson ecological risk index method were used to evaluate the integrated pollution effect of heavy metals in latosol.[Result] The average contents of Cr,Cu,Zn,As,Cd and Pb in latosol in western area of Hainan Island were 65.57,35.16,93.56,8.50,0.24 and 79.29 mg/kg,respectively.The major pollution factor of heavy metal was Pb,the sequence of influence factors of various heavy metals was PbCu=ZnCrAsCd.The potential ecological risk coefficient of various heavy metals was PbCdCuAsCrZn.The average value of potential ecological risk index（RI） was 45.14,belonging to low ecological risk range.[Conclusion] The heavy metal pollution in latosol in western area of Hainan Island belongs to slight pollution.

关 键 词：海南岛 砖红壤 重金属 生态风险评价 

分 类 号：X131.3[环境科学与工程—环境科学]