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[Temporal and Spatial Distribution of Microplastic Contamination in Soil and Influencing Factors: A Global Analysis].
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Microplastic pollution in soil has spiked since 2015 as global plastic production soared, and surprisingly, forests and unused land often have more contamination than farmland or cities—showing plastic waste travels far beyond where it's dumped. Since soil microplastics can work their way into crops, groundwater, and eventually our food supply, this matters for everyone, not just people living near factories or farms; the researchers pinpoint farming and industrial activity as the biggest culprits, pointing to where cleanup efforts should focus first.
). Temporal trends indicated a significant increase in soil microplastic contamination since 2015, coinciding with the rapid global growth in plastic production, which surpassed 350 million tons annually. Land use assessments showed that forest and unused lands contained significantly higher concentrations of microplastics compared to agricultural and urban soils. This suggests complex pollution pathways that extend beyond direct human activities. Correlation analysis and XGBoost modeling identified agricultural and industrial activities as the primary drivers of soil microplastic accumulation, surpassing factors such as population density or general economic indicators in explanatory power. The study further underscores the critical importance of standardized detection methods, as analytical techniques significantly influence the reported levels of contamination. These findings offer essential insights for the development of targeted mitigation strategies and policy frameworks to address the escalating issue of soil microplastic pollution, highlighting the need for an integrated approach that simultaneously addresses economic development and environmental protection goals.
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Researchers synthesized evidence on microplastic occurrence across land uses — croplands, urban areas, industrial zones, and remote environments — finding consistently higher concentrations near intensive human activity, vertical enrichment in topsoils, and widespread ecological effects on soil structure, microbial communities, and plant and invertebrate health.
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Tiny plastic particles called microplastics are showing up in soils around the world, and this study rounds up existing research to see how much is out there, especially in farmland. This matters because soil is where our food grows, so understanding microplastic buildup there is an important step toward figuring out if it could end up in our meals and affect our health. Note that this paper mainly organizes what scientists already know rather than presenting brand-new findings.
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This global review synthesized data from studies on microplastic concentrations in soils worldwide, finding contamination across diverse terrestrial environments with higher levels near urban areas and agricultural land. Terrestrial soils are estimated to contain far more microplastic than the world's oceans, making them a critical but understudied reservoir of plastic pollution.
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Tiny plastic bits from things like farm mulch, car tires, and trash are building up in soil everywhere—farms, cities, and even forests—and the smallest pieces can sink deep into the ground where they're more likely to be taken up by plants and soil organisms. This matters for us because these plastics can enter the food we grow, and this review (a summary of many existing studies) shows scientists still don't fully understand the long-term health and environmental risks, meaning better plastic recycling and management are urgently needed.
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This review mapped the spatial risks of microplastic contamination in global soils, examining how climate, land use, and human activities distribute MP pollution and analyzing cascading effects on soil ecology, carbon cycling, and ecosystem services.
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