作者
Ying Huang, Lingyu Wang, Wenjia Wang, Tingqiang Li, Zhenli He, Xiaoe Yang
发表日期
2019/2/15
期刊
Science of the Total Environment
卷号
651
页码范围
3034-3042
出版商
Elsevier
简介
In the last decades, agricultural soil pollution by heavy metals has been extensively investigated in China. However, nearly all studies were field monitoring in small regions and/or with limited samples, which may not represent soil pollution situation at the national scale. In this paper, attempt was made to provide a comprehensive report about heavy metal pollution in China based on meta-analysis of reviewed data. Given the characteristics of field monitoring studies, the weighted mean values based on “sampling number”, “study area”, and “standard deviation” were calculated to represent national mean values. In addition, subgroup analysis and cumulative meta-analysis were applied to explore the spatial and temporal variations as well as the influence of cropping systems. 336 articles published from 2005 to 2017 were reviewed in the analysis. Eight heavy metals (cadmium (Cd), chromium (Cr), mercury (Hg …
引用总数
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