矿山区土壤重金属污染及农作物富集情况研究

Study on Soil Heavy Metals Pollution and Crop Enrichment in Mine Aera

采用野外调查和实验室内测定分析相结合的方法,调查了某典型矿山区土壤及农作物铅(Pb)、锌(Zn)、镉(Cd)3种重金属污染情况。结果表明,调查区域Zn、Pb、Cd 3种重金属均属于重度污染,其中Zn的含量最高,土壤和农作物对Cd富集能力最强,土壤污染程度排序为表层土壤>中层土壤>深层土壤。试验测定的5类农作物中,果树类对3种重金属的综合富集能力最弱,因此,在今后的种植作物选择中应予以重点考虑。

This study investigated the contamination of soil and crops lead(Pb),zinc(Zn)and cadmium(Cd)in a typical mountainous area,the method of field investigation and laboratory determination analysis was used,the purpose is to understand the overall state of soil environmental quality within the research area,and provide the data basis for the selection of the experimental area and crop planting type.The results show that,the three heavy metals in the survey area Zn,Pb,and Cd are all severely polluted,of which Zn has the highest content,soil and crops have the strongest concentration of Cd,and soil pollution is ranked as surface soil>middle soil>deep soil,among the five types of crops tested,fruit trees have the least comprehensive enrichment ability for the three types of heavy metals,and they can be considered in the future crop selection.