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Microplastics in the soil environment: Occurrence, risks, interactions and fate – A review

Critical Reviews in Environmental Science and Technology 2019 611 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Baile Xu, Baile Xu, Baile Xu, Fei Liu, Baile Xu, Baile Xu, Baile Xu, Baile Xu, Fei Liu, Baile Xu, Fei Liu, Fei Liu, Fei Liu, Baile Xu, Baile Xu, Dan Huang, Dan Huang, Philip C. Brookes, Zachary Cryder, Zhijiang Lu, Jay Gan, Jay Gan, Philip C. Brookes, Jay Gan, Baile Xu, Yan He, Jianming Xu Jianming Xu Dan Huang, Jianming Xu Baile Xu, Zhenmei Lü, Jay Gan, Zhijiang Lu, Jay Gan, Jianming Xu Jianming Xu Yan He, Zhijiang Lu, Zhijiang Lu, Zhijiang Lu, Zhijiang Lu, Zhenmei Lü, Jianming Xu Jay Gan, Yan He, Zhijiang Lu, Jay Gan, Jianming Xu Jianming Xu Caixian Tang, Jianming Xu Jianming Xu Yan He, Zhijiang Lu, Yan He, Yan He, Haizhen Wang, Yan He, Jay Gan, Yan He, Yan He, Jay Gan, Jay Gan, Jay Gan, Jay Gan, Zhenmei Lü, Zhenmei Lü, Baile Xu, Zhijiang Lu, Jianming Xu Philip C. Brookes, Jay Gan, Caixian Tang, Jay Gan, Jianming Xu Jianming Xu

Summary

This review compiled evidence on microplastic occurrence and effects in soils, finding that terrestrial environments receive 4–23 times more plastic annually than oceans and that microplastics alter soil properties, microbial communities, and plant growth. The authors emphasize the need for standardized methods and more research on soil microplastic dynamics.

The issue of microplastic pollution emerged from the marine environment, but the terrestrial environment is estimated to receive annually 4–23 times more plastic wastes. Microplastic pollution in the soil environment has thus begun to elicit great concern. This review summarizes the observed effects of microplastic pollution on soil ecosystems as well as sorption and transport behaviors of microplastics in such environments. Microplastic pollution has been detected in various soils including agricultural/farmland, greenhouse, home garden, coastal, industrial, and floodplain soils. Microplastics affect soil physical and chemical properties, microbial and enzyme activities, and plant growth, and also pose adverse ecotoxicological effects to soil fauna. These effects depend on the concentration, size, and shape of microplastics, as well as soil texture. Microplastics are known to sorb organic and inorganic pollutants, possibly affecting the distribution of these substances in soil. Existing evidence demonstrates the negligible effect of microplastics on bioaccumulation of contaminants in soil fauna. The horizontal and vertical transport of microplastics can be facilitated by soil fauna. Pollutants associated with microplastics may disperse further following the transport of microplastics in soil. This review also highlights perspectives for future research on microplastics in soil.

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