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61,005 resultsShowing papers similar to Assessment of microplastic ecological risk and environmental carrying capacity of agricultural soils based on integrated characterization: A case study
ClearAbundance and characteristics of microplastics in soils with different agricultural practices: Importance of sources with internal origin and environmental fate
Microplastic abundance and characteristics were examined in soils representing four agricultural practice types in Chinese farmland to evaluate the influence of land use on plastic particle accumulation. Microplastic concentrations and polymer types varied by agricultural practice, with plastic mulch film use and irrigation water source as key drivers of farmland soil contamination.
Occurrence status of microplastics in main agricultural areas of Xinjiang Uygur Autonomous Region, China
Agricultural soils in Xinjiang, China, were surveyed for microplastic contamination, revealing widespread presence in major farming regions where plastic mulch films and irrigation systems are heavily used. The study provides one of the first regional-scale assessments of microplastic pollution in this important agricultural area.
Microplastics in arid soils: Impact of different cropping systems (Altay, Xinjiang)
Researchers investigated microplastic contamination in farmland soils in an arid region of China, finding extremely high concentrations averaging over 52,000 particles per kilogram of soil. Polyethylene from plastic mulch film accounted for over 90% of the microplastics, with fields growing tall crops like sunflower and maize showing more contamination than potato fields. The study demonstrates that agricultural plastic mulch use is a major source of soil microplastic pollution, particularly in arid farming regions.
Occurrence characteristics, source analysis, and risk assessment of microplastics in agricultural soils: A case study on Shihezi Reclamation Area, Xinjiang, China
Microplastic occurrence was characterized in agricultural soils of the Shihezi Reclamation Area, Xinjiang — a region with decades of plastic film mulching — finding high-density PE and PP fragments as dominant types, with mulch film degradation as the primary source.
Considering microplastic characteristics in ecological risk assessment: A case study for China
Scientists measured microplastic contamination in agricultural soils in Northeast China and found concentrations ranging from 300 to 12,800 particles per kilogram. Most particles came from textiles and packaging, with rayon and PET fibers being the most common types. Risk assessment models showed varying levels of ecological concern, and the study emphasizes that multiple characteristics of microplastics, not just their quantity, need to be considered when evaluating environmental risk.
Potential sources and occurrence of macro-plastics and microplastics pollution in farmland soils: A typical case of China
This review examines plastic pollution in Chinese farmland soils, finding that agricultural practices like mulch film use and sewage sludge application are major sources of both macro- and microplastics that accumulate over time.
Occurrence characteristics and ecological impact of agricultural soil microplastics in the Qinghai Tibetan Plateau, China
Researchers investigated microplastic pollution in agricultural soils on the Qinghai Tibetan Plateau in China, a remote area with low population density. They found microplastic concentrations ranging from about 17 to 950 particles per kilogram, with polyethylene terephthalate, polypropylene, and polyethylene being the most common types. The study suggests that facility-based agriculture significantly increases soil microplastic levels, and nearly half of the areas assessed showed relatively high polymer risk.
Macro- and micro-plastic accumulation in soils under different intensive farming systems: A case study in Quzhou county, the North China Plain
Soil samples from six farming systems in the North China Plain showed macroplastic abundances from 0.2 to 46.8 kg/ha and microplastic concentrations up to 3.7×10⁴ items/kg, with greenhouse and mulched vegetable fields showing the highest contamination.
Distinct microplastic distributions in soils of different land-use types: A case study of Chinese farmlands
Microplastic distribution across six types of farmland land use was surveyed from soils in five Chinese provinces to determine how agricultural practices shape soil microplastic contamination. The study found that microplastic abundance varied significantly by land-use type, with plastic mulch film use and irrigation practices as key contributing factors.
Contribution of mulch film to microplastics in agricultural soil and surface water in China
Researchers developed a framework to quantify how much agricultural mulch film contributes to microplastic contamination in farmland soil and surface water in China, measuring the ratio of mulch-derived particles to total microplastics from all sources.
Spatial Distributions, Compositional Profiles, Potential Sources, and Intfluencing Factors of Microplastics in Soils from Different Agricultural Farmlands in China: A National Perspective
Researchers conducted a nationwide survey of microplastics in Chinese agricultural soils, collecting 477 samples from 109 cities across 31 regions, and identified spatial distribution patterns and key factors influencing farmland microplastic contamination.
Significant influence of land use types and anthropogenic activities on the distribution of microplastics in soil: A case from a typical mining-agricultural city
Scientists surveyed microplastic pollution across five types of land in a Chinese mining-agricultural city and found the highest levels in greenhouse farmland, with nearly 3,738 particles per kilogram of soil. Agricultural plastic waste, irrigation water, and fertilizers were identified as the main sources of contamination. The study shows that farming practices are major contributors to microplastic buildup in the soil that produces our food.
From mapping to modelling: the evolving multidimensional microplastic risks in China's farmlands
Researchers combined a national-scale soil survey with machine learning models to map and project microplastic risks across China's farmlands through 2050, finding that agricultural film use, population density, and GDP are key drivers, and that regional risk rankings will shift counter-intuitively depending on which socioeconomic development pathway is followed.
[Distribution Characteristics and Risk Assessment of Microplastics in Farmland Soil in Guyuan].
Researchers analyzed microplastic distribution in agricultural soils in Guyuan City, China, finding concentrations ranging from 186 to 1,286 particles per kg, with greenhouse farming soils containing 35–229% more microplastics than open fields and PE and PP being the dominant polymer types. The findings raise concern for food chain contamination and demonstrate that plastic mulch film use in facility agriculture significantly increases soil microplastic accumulation.
Duration- and area-dependent influences of plastic film mulch on soil microplastics abundance
Researchers conducted a field campaign combined with remote sensing to investigate how the duration and coverage area of plastic film mulching affect microplastic abundance in agricultural soils in northern China's agro-pastoral ecotone, finding that microplastic concentrations ranged from 41.7 to 787.5 items per kilogram and positively correlated with mulching duration.
Distribution, Environmental Risk Assessment, and Key Drivers of Microplastics in Farmland Soils Across Agricultural Zones in China
Researchers mapped the distribution and environmental risk of microplastics across a study area while identifying the key drivers of spatial variation, including land use and proximity to pollution sources. The findings provide a framework for prioritizing cleanup and management efforts in microplastic-contaminated environments.
National-scale distribution of micro(meso)plastics in farmland soils across China: Implications for environmental impacts
Farmland soils across 30 sites in China contained an average of 358 microplastic items/kg, with concentrations higher in arid northern regions; meta-analysis showed that while current soil levels are generally below minimum effective concentrations for harming crops and soil enzymes, they are approaching those thresholds.
Characteristics of Microplastic Pollution in Agricultural Soils in Xiangtan, China
Researchers characterized microplastic pollution in agricultural soils in Xiangtan, China, finding an average abundance of over 4,300 particles per kilogram of soil. The study found that rice paddies and vegetable fields contained different microplastic profiles, with polypropylene and polyethylene being the most common types, pointing to mulch film and irrigation water as likely sources.
Microplastic Accumulation in Agricultural Soils with Different Mulching Histories in Xinjiang, China
Researchers found that microplastic accumulation in agricultural soils of Xinjiang, China increases significantly with mulching history, with fields mulched for over 20 years containing substantially more microplastics across all soil layers.
Agricultural plastic mulching as a source of microplastics in the terrestrial environment
Researchers analyzed 384 soil samples from 19 Chinese provinces and found that macroplastic fragments were concentrated in agricultural fields with plastic mulch film use, providing large-scale field evidence linking agricultural mulching to terrestrial plastic contamination.
Status, characteristics, and ecological risks of microplastics in farmland surface soils cultivated with different crops across mainland China
Researchers conducted a nationwide survey of microplastics in farmland soils across mainland China, covering over 30 crop types in 109 cities. They found microplastics in all sampled soils, with concentrations varying by crop type, region, and farming practices such as plastic film mulching and irrigation methods. The study provides the most comprehensive picture to date of agricultural microplastic contamination in China and identifies the key farming practices that contribute most to soil pollution.
Microplastics pollution modulated by farming regimes under multi-scenarios
Microplastic concentrations in agricultural soils were found to vary with farming regimes, with certain practices under mulching leading to higher accumulation. The study highlights how common agricultural methods contribute to soil microplastic pollution and supports calls for better plastic mulch management.
Occurrence characteristics and risk assessment of microplastics in agricultural soils in the loess hilly gully area of Yan' an, China
Researchers measured microplastic levels in agricultural soil, water, and fertilizer in a farming region of central China and found an average of about 4,500 particles per kilogram of soil. Over 90% of the particles were smaller than 100 micrometers, and the main types were polyethylene and PET from sources like plastic mulch and compost. The findings show that farming practices are introducing significant microplastic contamination into the soil where food is grown.
Effects of agricultural land types on microplastic abundance: A nationwide meta-analysis in China
Meta-analysis of 321 observations across Chinese agricultural soils found that vegetable-growing soils had the highest microplastic contamination, followed by orchards, cropland, and grassland. Agricultural film mulch significantly increased soil microplastic levels, especially in orchards, while higher population density and economic activity correlated with increased contamination across all land types.