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Potential sources and occurrence of macro-plastics and microplastics pollution in farmland soils: A typical case of China

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Siyang Ren, Ruimin Qi, Jinrui Zhang, Hanyue Zhang, Ruimin Qi, Kai Wang, Ruimin Qi, Kai Wang, Kai Wang, Kai Wang, Davey L. Jones, Ruimin Qi, Ruimin Qi, Ruimin Qi, Ruimin Qi, Siyang Ren, Siyang Ren, Jinrui Zhang, Jinrui Zhang, David R. Chadwick, Jinrui Zhang, Siyang Ren, Kai Wang, Davey L. Jones, Wen Xu, Kai Wang, Xuejun Liu David R. Chadwick, Davey L. Jones, David R. Chadwick, Kai Wang, Davey L. Jones, David R. Chadwick, Wen Xu, Ruimin Qi, Changrong Yan, Changrong Yan, Changrong Yan, Davey L. Jones, Davey L. Jones, Changrong Yan, Changrong Yan, Changrong Yan, Wen Xu, Jinrui Zhang, Jinrui Zhang, Davey L. Jones, Siyang Ren, Davey L. Jones, Davey L. Jones, Davey L. Jones, Kai Wang, David R. Chadwick, Ruimin Qi, Changrong Yan, Changrong Yan, Davey L. Jones, Davey L. Jones, Davey L. Jones, Davey L. Jones, Jinrui Zhang, Ruimin Qi, David R. Chadwick, Changrong Yan, David R. Chadwick, Changrong Yan, Jingjing Li, Changrong Yan, Jingjing Li, Changrong Yan, Davey L. Jones, David R. Chadwick, Wen Xu, Changrong Yan, Changrong Yan, Ruimin Qi, Changrong Yan, Jingjing Li, Changrong Yan, Wen Xu, Wen Xu, David R. Chadwick, Hanyue Zhang, Hanyue Zhang, Changrong Yan, Hanyue Zhang, Changrong Yan, Changrong Yan, Changrong Yan, Davey L. Jones, David R. Chadwick, Davey L. Jones, Xuejun Liu Xuejun Liu Xuejun Liu Changrong Yan, Xuejun Liu Changrong Yan, Davey L. Jones, Changrong Yan, David R. Chadwick, Davey L. Jones, Davey L. Jones, Changrong Yan, Kai Wang, Davey L. Jones, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Davey L. Jones, Davey L. Jones, Davey L. Jones, Davey L. Jones, Davey L. Jones, David R. Chadwick, Ruimin Qi, Ruimin Qi, Kai Wang, Kai Wang, Xuejun Liu Hanyue Zhang, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Davey L. Jones, Davey L. Jones, Wen Xu, Xuejun Liu Changrong Yan, Davey L. Jones, David R. Chadwick, Xuejun Liu Davey L. Jones, Changrong Yan, Davey L. Jones, Changrong Yan, Wen Xu, Wen Xu, Davey L. Jones, David R. Chadwick, Changrong Yan, Fusuo Zhang, Kai Wang, Changrong Yan, Changrong Yan, Davey L. Jones, Fusuo Zhang, Hanyue Zhang, Davey L. Jones, Davey L. Jones, Davey L. Jones, Changrong Yan, David R. Chadwick, Changrong Yan, Davey L. Jones, Davey L. Jones, Davey L. Jones, Changrong Yan, Xuejun Liu Davey L. Jones, Xuejun Liu Changrong Yan, Davey L. Jones, David R. Chadwick, Siyang Ren, Changrong Yan, Davey L. Jones, Siyang Ren, Davey L. Jones, Davey L. Jones, Davey L. Jones, Changrong Yan, Changrong Yan, Changrong Yan, Kai Wang, Xuejun Liu Changrong Yan, Davey L. Jones, Xuejun Liu Davey L. Jones, Ruimin Qi, Changrong Yan, Davey L. Jones, Changrong Yan, David R. Chadwick, Davey L. Jones, David R. Chadwick, Kai Wang, Fusuo Zhang, Fusuo Zhang, Davey L. Jones, David R. Chadwick, David R. Chadwick, David R. Chadwick, David R. Chadwick, Davey L. Jones, Fusuo Zhang, David R. Chadwick, Fusuo Zhang, Ruimin Qi, Fusuo Zhang, David R. Chadwick, Davey L. Jones, Davey L. Jones, Davey L. Jones, Davey L. Jones, Wen Xu, Davey L. Jones, Davey L. Jones, David R. Chadwick, Kai Wang, Davey L. Jones, David R. Chadwick, Davey L. Jones, David R. Chadwick, Xuejun Liu David R. Chadwick, Kai Wang, Changrong Yan, Changrong Yan, Fusuo Zhang, David R. Chadwick, Xuejun Liu David R. Chadwick, Davey L. Jones, Davey L. Jones, Davey L. Jones, Davey L. Jones, Xuejun Liu David R. Chadwick, Xuejun Liu

Summary

This review examines plastic pollution in Chinese farmland soils, finding that agricultural practices like mulch film use and sewage sludge application are major sources of both macro- and microplastics that accumulate over time.

Plastic debris (including macro-plastics, microplastics (MPs), and nanoplastics), defined as an emerging contaminant, has been proven to significantly affect soil ecosystem functioning. Accordingly, there is an urgent need to robustly quantify the pollution situation and potential sources of plastics in soils. China as the leading producer and user of agricultural plastics is analyzed as a typical case study to highlight the current situation of farmland macro-plastics and MPs. Our study summarized information on the occurrence and abundance of macro-plastics and MPs in Chinese farmland soils for the first time based on 163 publications with 728 sample sites. The results showed that the average concentration of macro-plastics, and the abundance of MPs in Chinese farmlands were 103 kg ha<sup>−1</sup> and 4537 items kg<sup>−1</sup> (dry soil), respectively. In addition, this study synthesized the latest scientific evidence on sources of macro-plastics and MPs in farmland soils. Agricultural plastic films and organic wastes are the most reported sources, indicating that they contribute significantly to plastic debris in agricultural soils. Furthermore, the modeling methods for quantifying macro-plastics and MPs in soils and estimating the stock and flow of plastic materials within agricultural systems were also summarized.

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