普洱市某茶园土壤重金属含量及评价

Content and evaluation of heavy metal in soil of tea garden in Puer city

摘要: 通过对普洱市某茶园土壤中重金属As、Hg、Pb、Cd和Cu含量的测定，采用重金属单项污染指数法和Nemerow污染指数法，以土壤环境质量一级标准对该茶园土壤重金属污染状况进行评价.结果表明：As、Hg、Pb、Cd的单项污染指数均小于0.7，Cu的单项污染指数为0.988，综合污染指数为0.73，茶园土壤环境质量总体良好，符合有机茶园土壤环境质量标准. 

Abstract: Five heavy metal ions including As,Hg,Pb,Cd and Cu were determined in soil of tea garden in Puer city,the pollution situation of tea garden soil was evaluated by the single factor pollution index and Nemerow pollution index,combining with the Criteria of Grade Ⅰof the National Standards for Soil Environmental Quality.The results showed that the single factor pollution index of As,Hg,Pb and Cd were all below 0.7,and that of Cu was 0.988,the integrated pollution index was 0.73.The quality of soil environment in tea garden was good on the whole,and it accorded with the soil environment quality standards of the organic tea garden.