基于文献检索的土壤重金属污染研究

Research on Soil Heavy Metal Pollution Based on Literature Search

土壤重金属污染在全国范围内已经变得十分普遍,但是对各功能区土壤进行全国范围的研究比较少,大多数是基于兴趣的研究。本文以中国知网检索到的关于土壤重金属污染文献为基础,统计全国土壤重金属污染情况、8种重金属污染情况、各功能区土壤的污染情况。结果发现,全国范围内土壤重金属污染十分严重,Cd是污染最严重的重金属;8种主要的重金属呈现出在工矿区以及人口密集的区域污染严重的现象;在各功能区重金属污染研究中,对于非矿区农用土壤的研究是最多的,并且这类土壤也是污染比较严重的一种类型,而农用地污染会直接影响食品安全,需要加强治理。

Soil heavy metal pollution has become very common nationwide,but there are still relatively few nationwide studies on soils in various functional areas,most of which are based on interest.Based on the literature on soil heavy metal pollution retrieved by CNKI,this article counts the country's soil heavy metal pollution,8 types of heavy metal pollution,and soil pollution in various functional areas.It was found that soil heavy metal pollution was very serious nationwide,and Cd was the most polluted heavy metal.Eight heavy metals appeared to be polluted seriously in industrial and mining areas and densely populated areas.In the study of heavy metal pollution in various functional areas,the research on agricultural soils in non-mining areas was the most,and this type of soil was also a type of serious pollution.The pollution of agricultural land will directly affect food safety and control measures need to be strengthened.