期刊论文

Liu, Xiao-Li(839126754@qq.com)

中文

环境科学

0250-3301

2023

44

3

1602-1610

10.13227/j.hjkx.202204294

湖南省自然科学基金项目（2020JJ4370）；

本校为第一机构

为了解我国南方典型矿区所在流域的耕地土壤重金属含量空间分布特征及其污染状况，对所选取的小流域内耕地土壤6种重金属（Cd、As、Mn、Cu、Zn和Pb）的总量进行测定，运用空间插值方法分析典型矿区小流域尺度重金属含量的空间分异特征，并采用地累积污染指数法与潜在生态危害指数法进行了生态风险评价。结果表明，小流域内耕层（0～20cm）土壤中Pb、Zn、Cu、As和Cd的含量均值分别高出背景值约11.9、3.8、8.2、4.7和14.2倍，样品超过农用地土壤污染风险筛选值的比例分别为24％、56％、75％、44％和48％，Zn和Mn呈现中等变异，Pb、As、Cu和Cd则发生了强变异，表明小流域内存在明显的重金属富集现象...

In order to clarify the spatial distribution characteristics and the present situation of heavy metal pollution in cultivated soil of a typical mining basin in southern China, the contents of Cd, As, Mn, Cu, Zn, and Pb in cultivated soil in the selected small watershed were determined, and the spatial distribution characteristics of heavy metals were analyzed using the spatial interpolation method. Further, the ecological risk was evaluated using the geo-accumulation index and potential ecological risk coefficient (PERC). The results showed tha...