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Recent Insights into Microplastic Pollution and Its Effects on Soil Carbon: A Five-Year Ecosystem Review
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This review of 46 studies examines how microplastics influence carbon cycling in different soil ecosystems. The majority of studies reported increased CO2 and methane emissions in soils containing microplastics, though some found opposite or neutral effects depending on soil type and the characteristics of the microplastics, highlighting the need for further research to understand these complex interactions.
The widespread presence of microplastics (MPs) is of growing concern for both the scientific community and the public. Contemporary research increasingly focuses on ecosystem transformation and global climate change. We conducted a literature review, consisting of 46 studies, to investigate the consequences of MPs’ influence on the carbon cycle in different soil types across various ecosystems. MPs can affect the cycling of carbon compounds and other biogenic elements by impacting the soil microbiome, enzyme activity, plant growth, litter decomposition, and more. The majority of authors report increased CO2 and/or CH4 emissions in soils containing MPs. However, some studies demonstrate the opposite or a neutral result, and the outcomes can differ even within a single study depending on the soil type and/or the type, form, and size of the MPs used. Further clarification and development of our understanding regarding the impact of MPs on the carbon cycle across different ecosystems remain crucial, taking into account the inclusion of as wide a variety of MPs as possible in future research.
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Microplastics in soil contribute to organic carbon storage through degradation and leaching, but also disrupt carbon cycling by altering plant growth, litter decomposition, and microbial activity. The net effect on soil CO2 and CH4 emissions varies depending on how microplastics reshape microbial community structure and enzyme activity.
Microplastics alter soil carbon cycling: Effects on carbon storage, CO 2 and CH 4 emission and microbial community
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This systematic review examines how microplastics in soil affect carbon cycling, including greenhouse gas emissions and carbon storage. The effects depend heavily on plastic type and size, with biodegradable plastics generally having a bigger impact. Understanding these soil-level changes matters because disrupted carbon cycles can worsen climate change, which in turn affects the food and water systems we all depend on.
Microplastic effects on carbon cycling processes in soils
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Researchers reviewed how microplastics affect carbon cycling processes in soils, including their influence on microbial activity, plant growth, and litter decomposition. Since microplastics are themselves carbon-based materials, they can directly alter soil carbon stocks while also indirectly shifting microbial communities. The study calls for a major research effort to understand the widespread effects of microplastics on soil functioning and terrestrial ecosystem health.
Ecological effect of microplastics on soil microbe-driven carbon circulation and greenhouse gas emission: A review
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This review examines how microplastics in soil affect carbon cycling by altering microbial activity, with implications for greenhouse gas emissions and climate change. Researchers found that microplastics can change soil structure, nutrient availability, and microbial community composition in ways that affect how carbon is stored or released from soil. The study suggests that widespread microplastic contamination in agricultural and natural soils could have far-reaching consequences for the global carbon balance.
Impacts of Microplastics on Soil Characteristics, Microbial Diversity and Greenhouse Gas Emissions: A Review
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This review summarizes existing research on how tiny plastic particles in soil affect its structure, microbial communities, and greenhouse gas emissions. Findings show microplastics alter carbon and nitrogen cycling, shift microbial populations, and change gas emissions in ways that depend on plastic type, shape, and soil conditions.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.