Status of cadmium accumulation in agricultural soils across China (1975-2016): From temporal and spatial variations to risk assessment

Chemosphere
Taoran ShiHong Hou

Abstract

Based on 1186 published studies, the first national-scale assessment of cadmium (Cd) contamination in agricultural soils across China was conducted. Cd concentrations, temporal and spatial variations, and ecological and health risks resulted from Cd exposure were analyzed. A small part of sampling sites with Cd concentration surpass the screening value and the control value (GB15618-2018), respectively. Soil Cd concentrations in South China were higher than other regions. Ecological risks resulting from Cd contamination were low. Soil Cd concentrations accumulated gradually from 1981 to 2016. Cd mainly came from anthropogenic activities, such as mining, smelting, sewage irrigation, and fertilization. Linear correlations were observed between application amounts of fertilizers and Cd concentrations in soil, indicating that the application of nitrogen, phosphorus, potassium, and compound fertilizers is an important contributor of Cd in soils. This study details the overall Cd contamination status of agricultural soils in China, thus can provide insights for policymakers regarding contamination prevention measures.

Citations

Jan 29, 2021·International Journal of Environmental Research and Public Health·Shufeng SheZhou Shi
Mar 10, 2021·Environmental Geochemistry and Health·Yuanyuan Cheng, C Paul Nathanail
Sep 14, 2020·Ecotoxicology and Environmental Safety·Guobing WangHongyan Guo
Jun 9, 2021·Environmental Science and Pollution Research International·Rui ChenRongguang Shi
Jun 3, 2021·International Journal of Environmental Research and Public Health·Ruru HanHuilun Chen
Jun 25, 2021·Bulletin of Environmental Contamination and Toxicology·Guobing WangHongyan Guo
Aug 11, 2021·Environmental Science and Pollution Research International·Colin William GrayJo-Anne Cavanagh
Oct 10, 2021·Journal of Environmental Quality·Colin William Gray, Jo-Anne Elizabeth Cavanagh
Apr 13, 2020·Ecotoxicology and Environmental Safety·Xingyuan LiJin Ma
May 10, 2020·The Science of the Total Environment·Yuanyuan ChengShittu Whanda Ja'afaru
Feb 9, 2022·Environmental Science and Pollution Research International·Tao ZengGuo Wang

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