基于Meta分析的华东地区菜田土壤重金属污染评价

Evaluation of Heavy Metal Pollution in Vegetable Soil Around East China Based on the Meta-analysis

基于2000—2023年发表的92篇文献,文章对华东地区菜田土壤不同重金属污染(Cd、Cr、Hg、Pb、As、Cu、Zn、Ni)进行了Meta分析。结果显示,华东地区菜田土壤普遍存在重金属积累,其中Cd污染尤为严重。土壤中Cd、Cr、Cu、Zn和Ni含量明显偏高,相较于背景值分别提高了120%、10.5%、26.5%和16.6%和6.8%。此外,菜田土壤重金属积累与当地经济发展水平有一定关联。值得注意的是,重金属积累区域通常伴随土壤酸化,导致重金属生物有效性增加。文章通过Meta分析综合评估了华东地区菜田土壤重金属污染现状、驱动因素和变化特征,以期为菜田土壤重金属污染评估提供参考,并为土壤环境质量改善和食品安全提供数据支撑。

According to 92 research papers published from 2000 to 2023,this study investigates the different heavy metal pollutions(Cd,Cr,Hg,Pb,As,Cu,Zn,Ni)of vegetable soil in East China by using the meta-analysis.The results show that heavy metals are generally accumulated in vegetable soil around East China,especially for the Cd pollution.The contents of Cd,Cr,Cu,Zn and Ni in soil are significantly higher,which are all greater than 0.The content of Cd,Cr,Cu,Zn and Ni in soil are significantly increased by 120%,10.5%,26.5%,16.6%and 6.8%,compared with background values.Besides,the heavy metal accumulation in vegetable soil is related to the local economic development.The heavy metal accumulation in vegetable soil is usually accompanied by soil acidification,which can enhance the bio-availability of soil heavy metals.This paper comprehensively evaluates the status,driving factors and characteristics of heavy metal pollutions in vegetable soil around East China through the meta-analysis,in order to provide references for evaluating the heavy metal pollution of vegetable soil and give data supports for the soil environmental quality improvement and the food safety.