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Soil health and microplastics: a review of the impacts of microplastic contamination on soil properties

  • Soils, Sec 4 • Ecotoxicology • Review Article
  • Published:
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Abstract

Purpose

Soil is a thin coating of matter that covers the earth’s surface, formed through the process of rock weathering. It is a natural filter for impurities in groundwater and is very important to human health. Recently, some studies from around the world have confirmed that the presence of microplastics in soil is increasing. However, most of these studies only examined the impacts of soil microplastic contamination one or two soil health indicators, rather than study all three soil health indicators at once.

Methods

In this review, we selected papers published internationally in the past decade and examined the trend of the effects of soil microplastic contamination on all three soil health indicators.

Results and discussion

Soil microplastic contamination resulted in either an increase or decrease in the trend of the effects on physicochemical and biological soil properties. In other cases, microplastic contaminants do not affect soil properties. The alteration of soil health properties by microplastics was associated with a couple of reasons such as microplastic concentrations and types, changes in soil mechanics and microorganisms.

Conclusions

The current impact and severity of soil microplastic contamination on soil health properties are expected to persist for a long time, especially with increasing global plastic production. Therefore, more research is required to continuously assess the impact of microplastic contamination on other indicators of soil health that has not been studied previously.

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Funding

This study was endorsed by the Basic Science Research Program through the National Research Foundation of Korea (NRF) financed by the Ministry of Education (No.2019R1A6A1A03033167 and NRF-2021R1F1A1064027). It was also endorsed by the Korea Environment Industry and Technology Institute (KEITI) via the Measurement and Risk Assessment Program for Management of Microplastics Program (or Project), sponsored by the Korea Ministry of Environment (MOE) (2020003110010).

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Authors and Affiliations

Authors

Contributions

Roger Wainkwa Chia designed the review, interpreted, and wrote the manuscript’s first draft. Jiwook Jang drew the figures of the manuscript. Roger Wainkwa Chia, Jin-Yong Lee, Jiwook Jang, Heejung Kim, and Kideok D. Kwon commented and revised preceding versions of the manuscript. Jin-Yong Lee supervised and dispense technical guidance for this study. All authors read and agreed to the manuscript’s final version.

Corresponding author

Correspondence to Jin-Yong Lee.

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Conflict of interest

The authors declare no competing interests.

Additional information

Responsible editor: Dong-Mei Zhou

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Chia, R.W., Lee, JY., Jang, J. et al. Soil health and microplastics: a review of the impacts of microplastic contamination on soil properties. J Soils Sediments 22, 2690–2705 (2022). https://doi.org/10.1007/s11368-022-03254-4

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  • DOI: https://doi.org/10.1007/s11368-022-03254-4

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