【摘要】 采用单因子污染指数法和内梅罗污染指数法,对郑州市城郊菜地土壤重金属污染状况进行分析。结果表明,其综合污染指数为1.9,处于轻污染状态。菜地主要污染物为Cd,单因子污染指数为2.44。随着种植年限的增加,重金属有一定的累积现象,剖面分布上表现出表面聚集特征,Ni、Cu、Pb三者之间的相关系数高,这可能与Ni、Cu、Pb来源相同有关系。更多还原

【Abstract】 The analysis of soil heavy metals in Zhengzhou suburb of Henan province showed that the integrated pollution index was 1.9,which was in the state of light pollution.The main pollutant was Cd,and the average single-factor pollution index was 2.44.With the extension of cultivation,the soil heavy metals showed the characteristics of surface accumulation in the profile distribution.The correlation coefficient among Ni,Cu,and Pb was high,which could be associated with the same source.更多还原