Macro-and/or microplastics as an emerging threat effect crop growth and soil health

•Macro-and/or microplastics have negative effects on crop growth and soil health.•The response of crop growth and soil health to macro-and/or microplastics was related to plastic content, plastic type, plastic size, crop/ animal type variables.•The crop-soil properties might decrease with increased...

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Veröffentlicht in:Resources, conservation and recycling conservation and recycling, 2022-11, Vol.186, p.106549, Article 106549
Hauptverfasser: Gao, Haihe, Liu, Qin, Yan, Changrong, Mancl, Karen, Gong, Daozhi, He, Jiuxing, Mei, Xurong
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Sprache:eng
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Zusammenfassung:•Macro-and/or microplastics have negative effects on crop growth and soil health.•The response of crop growth and soil health to macro-and/or microplastics was related to plastic content, plastic type, plastic size, crop/ animal type variables.•The crop-soil properties might decrease with increased time and macroplastics overed 240 kg/ha.•The crop-soil animal properties might decrease with increased time and microplastics overed 10,000 mg/kg. Pollution caused by macro- and microplastics has become a global concern that is ubiquitous throughout the environment. The reported impacts of macro-and/or microplastics in soil were mixed without uniform conclusions. Here, we quantitatively analyzed the effects of macro-and microplastics on crop growth and soil health using a global meta-analysis, based on 2,226 paired field/ laboratory measurements from 141 papers published in the literature. The results show that the unabated accumulation of macro-and/or microplastics negatively impacts crop growth and soil health. Overall, there were no significant effects on crop-soil properties of macroplastics between 30 and 240 kg/ha excluding soil water infiltration rate, but the crop-soil properties were negatively impacted with time and macroplastics over 240 kg/ha excluding soil olsen-potassium. There were no significant effect on crop-soil animal properties of microplastics between 0.01 and 100 mg/kg excluding weight, but the crop-soil animal properties impacts were negative with time and microplastics over 10,000 mg/kg excluding plant chlorophyll. Using a random forest model (RF) trained with crop/ animal and macro-and/or microplastics factors, we found that the response of crop growth and soil health to macro-and/or microplastics was related to plastic content, plastic type, plastic size and crop/ animal type variables. Altogether, our findings of macro-and microplastics impacts on crop growth and soil health are crucial to policy-making related to agricultural sustainable development under global change. [Display omitted]
ISSN:0921-3449
1879-0658
DOI:10.1016/j.resconrec.2022.106549