[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]时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 ofCr, 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 Pb ＞ Cu = Zn ＞ Cr ＞ As ＞ Cd. The potential ecological risk coefficient of various heavy metals was Pb ＞ Cd ＞ Cu ＞ As ＞ Cr ＞ Zn. 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.
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