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Article Tier 2 Environmental Sources Food & Water Gut & Microbiome Human Health Effects Marine & Wildlife Policy & Risk Remediation Sign in to save

A discussion of microplastics in soil and risks for ecosystems and food chains

Chemosphere 2022 109 citations

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This review examines how microplastics accumulate in soils through agricultural practices, landfills, and wastewater, posing risks to ecosystems and food chains. Researchers found that while marine microplastic pollution has been well studied, terrestrial contamination remains poorly understood despite soil receiving more plastic waste than oceans. The study highlights how microplastics can alter soil properties, harm soil organisms, and potentially transfer through the food chain to humans.

Study Type Environmental

Microplastics are among the major contaminations in terrestrial and marine environments worldwide. These persistent organic contaminants composed of tiny particles are of concern due to their potential hazards to ecosystem and human health. Microplastics accumulates in the ocean and in terrestrial ecosystems, exerting effects on living organisms including microbiomes, fish and plants. While the accumulation and fate of microplastics in marine ecosystems is thoroughly studied, the distribution and biological effects in terrestrial soil call for more research. Here, we review the sources of microplastics and its effects on soil physical and chemical properties, including water holding capacity, bulk density, pH value as well as the potential effects to microorganisms and animals. In addition, we discuss the effects of microplastics in combination with other toxic environmental contaminants including heavy metals and antibiotics on plant growth and physiology, as well as human health and possible degradation and remediation methods. This reflect is an urgent need for monitoring projects that assess the toxicity of microplastics in soil and plants in various soil environments. The prospect of these future research activities should prioritize microplastics in agro-ecosystems, focusing on microbial degradation for remediation purposes of microplastics in the environment.

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