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61,005 resultsShowing papers similar to Estimation of soil microplastic input derived from plastic gauze using a simplified model
ClearDuration- 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.
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.
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.
Accumulation of microplastics in greenhouse soil after long-term plastic film mulching in Beijing, China
Researchers found that microplastic contamination in Beijing greenhouse soils increased with the duration of plastic film mulching, with abandoned greenhouses accumulating the highest levels at over 2,200 particles per kilogram of soil.
Large Scale Agricultural Plastic Mulch Detecting and Monitoring with Multi-Source Remote Sensing Data: A Case Study in Xinjiang, China
Satellite imagery was used to monitor plastic mulch film coverage across large agricultural areas in China, mapping both spatial extent and temporal changes. Accurately tracking plastic mulch use is important because agricultural film residues are a major source of microplastic contamination in farmland soils.
Impact of plastic film mulching on microplastic in farmland soils in Guangdong province, China
Researchers surveyed farmland in Guangdong, China's largest economic province, to determine how much plastic mulch film contributes to soil microplastic pollution. They found that fields using plastic mulch had significantly higher microplastic levels than those without, and the contamination correlated with years of mulch use. The study helps clarify the direct agricultural contribution to soil microplastic pollution in regions with many overlapping pollution sources.
Identifying hot-spots for microplastic contamination in agricultural soils—a spatial modelling approach for Germany
A spatial model was developed to identify hotspots of microplastic contamination in German agricultural soils based on plastic use in farming, sewage sludge application rates, and atmospheric deposition estimates, predicting that certain intensively farmed regions accumulate substantially more plastic than previously estimated from limited field studies.
Assessment of microplastic ecological risk and environmental carrying capacity of agricultural soils based on integrated characterization: A case study
Researchers assessed microplastic pollution in agricultural soils of the Tarim River Basin in China, finding concentrations ranging from 0 to 4,000 particles per kilogram. Polyethylene and polypropylene from agricultural mulch films and drip irrigation were the dominant plastics found. Early warning models predict that polyethylene and polypropylene levels may approach environmental carrying capacity thresholds in the near future, highlighting the need for targeted strategies to manage plastic pollution in farming regions.
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.
Plastic mulch film induced soil microplastic enrichment and its impact on wind-blown sand and dust
Field experiments in semi-arid northern China showed that plastic mulch film use significantly enriched microplastics in surface soils compared to unfilmed plots, and that wind-blown sand and dust from mulched farmland transported microplastics to surrounding environments.
Occurrence of Microplastics from Plastic Fragments in Cultivated Soil of Sichuan Province: The Key Controls
Researchers surveyed plastic fragment contamination in 20 mulched agricultural farmlands across Sichuan Province, China, finding abundances ranging from 50 to 1,158 particles per kilogram. A random forest model identified total mulch film amount, annual precipitation, and planting pattern as the key controls on fragment abundance.
Abundance 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.
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.
Characteristics of microplastics in dryland soils after long‐term film mulching and the effect of cropping type in western Liaoning Province, China
Fields in a semi-arid region of China that had been covered with agricultural plastic film for over a decade showed significant microplastic accumulation in the soil, with fragment shapes dominating and concentrations varying by crop type. Different crops influenced both the abundance and characteristics of microplastic particles, likely due to differences in tillage, root activity, and film use patterns. This study adds to growing evidence that agricultural plastic mulching is a major driver of farmland microplastic pollution with potential consequences for soil health and crop safety.
Occurrence and distribution of microplastics in coastal plain soils under three land-use types
Microplastic abundance and polymer composition were characterized in farmland, plantation, and orchard/secondary forest soils from 33 sites on the east China coastal plain. Farmland soils had significantly higher microplastic abundances than forest soils, with agricultural plastic mulching identified as the primary source of the dominant polyethylene film fragments.
Estimating the potential of climatic factors for global generation of microplastics from agricultural plastic films
Researchers combined national agricultural plastic film usage data with emission factor models and Monte Carlo simulations to estimate the global generation of microplastics from agricultural films. The resulting estimates highlight the large but uncertain scale of this contamination source for soil and food security.
Vertical distribution and characteristics of soil microplastics under different land use patterns: A case study of Shouguang City, China
Researchers systematically investigated microplastic distribution across seven land use types and three soil depth layers in Shouguang City, China. The study found that greenhouse and polytunnel agricultural soils had the highest microplastic abundance, dominated by polyethylene and polypropylene film fragments, with concentrations decreasing with depth but still reaching 11-19% of total levels in the deepest layer at 40-60 centimeters.
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.
Pollution Characteristics of Microplastics in Soils in Southeastern Suburbs of Baoding City, China
Researchers characterized microplastic pollution in soils from the southeastern suburbs of Beijing, finding widespread contamination across 12 sampling sites with fibers and fragments as the dominant forms, and highlighting agricultural activities and urban runoff as likely sources. The study contributes soil-ecosystem baseline data to a research area dominated by aquatic microplastic studies.
Abundance, spatial distribution, and characteristics of microplastics in agricultural soils and their relationship with contributing factors
Researchers found microplastic concentrations of 2,800 to 82,500 particles per kilogram in agricultural soils of Hainan Island, China, with plastic mulching, farming practices, and environmental factors all contributing to spatial variation in contamination levels.
Exploring the Occurrence Characteristics of Microplastics in Typical Maize Farmland Soils With Long-Term Plastic Film Mulching in Northern China
A survey of 225 soil samples from maize farmland with long-term plastic film mulching in northern China found widespread microplastic contamination, with abundance, distribution, and polymer composition reflecting the history of film use and agricultural management practices.
[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.
Impact of land-use patterns on soil microplastics: Distribution characteristics and driving factors in southern China’s Pearl River Delta
A study across different land-use types in China's Pearl River Delta found that agricultural land had higher soil microplastic concentrations than urban or forested areas, with land-use history and plastic mulch film use as the dominant factors controlling MP distribution and polymer composition.
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.