Cadmium contamination of soil and crops is affected by intercropping and rotation systems in the lower reaches of the Minjiang River in south-western China

Environmental Geochemistry and Health
Yang LiuLi Zhang

Abstract

Cadmium (Cd) accumulation and pollution in arable soils are particularly serious in the lower reaches of the Minjiang River in southwest of China. In this study, the remediation efficiency of Cd contamination in arable soils, the distribution pattern of Cd concentration in crops, and the food safety to humans of three typical cropping systems (S1: maize + sweet potato-Chinese cabbage, S2: maize + ginger-stem mustard, and S3: rice) were investigated and evaluated. After 1-year rotation, the percentage of Cd extracted by crops from the plough soil layer was observed in three system fields with the trend of S1 (2.30 %) > S2 (1.16 %) > S3 (0.21 %) and Cd extraction amount in crops was maximum in sweet potato, then in maize. The same kind of crop had the same pattern of Cd distribution in organs, and the edible parts generally accumulated less Cd amount than the inedible parts. Further, the grain crops were found to possibly be suitable one for using as phytoaccumulators of Cd contamination for farmlands. Direct consumption of these crops from the three systems would pose a high health risk to local inhabitants since it would result in the monthly intake of Cd (247 μg kg(-1) body weight) being nearly 10 times higher than the recomme...Continue Reading

References

Mar 3, 2005·The Science of the Total Environment·Hongyu LiuBohan Liao
Jul 29, 2005·The International Journal of Social Psychiatry·Kam-Shing Yip
Jul 28, 2006·The Science of the Total Environment·Hui YuZhongyi Yang
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Sep 8, 2009·Environmental Science & Technology·Masaharu MurakamiTomohito Arao
Sep 10, 2014·Environmental Science and Pollution Research International·Shuai WangXin Shen

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Citations

Apr 12, 2016·Environmental Geochemistry and Health·Muhammad RizwanFakhir Hannan
Feb 25, 2017·Food & Function·Yingying HuangZhongyi Yang
Jun 17, 2019·Environmental Science and Pollution Research International·Chonticha Chuaphasuk, Benjaphorn Prapagdee
Nov 24, 2019·The Science of the Total Environment·Wolde Tefera BeriShengke Tian

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