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61,005 resultsShowing papers similar to [Distribution Characteristics and Risk Assessment of Microplastics in Farmland Soil in Guyuan].
ClearThe abundance, characteristics and distribution of microplastics (MPs) in farmland soil—Based on research in China
This review analyzed microplastic contamination in farmland soil across China and found that fertilizer use and plastic mulch film are the biggest contributors, increasing soil microplastic levels by 170% and 232% respectively. The most common types found were polyethylene and polypropylene fragments and fibers. These findings are concerning because microplastics in farm soil can be taken up by crops and enter the human food supply.
The characteristics and influencing factors of farmland soil microplastic in Hetao Irrigation District, China
Researchers surveyed microplastic contamination in farmland soil across a major grain-producing region in China, finding concentrations ranging from about 1,800 to over 86,000 particles per kilogram. Polyethylene film fragments from agricultural plastic mulch were the dominant type, and 90% of the particles were smaller than 180 micrometers. The study shows that farming practices are introducing large amounts of microplastics into the soil where food crops are grown, raising questions about potential transfer into the food supply.
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.
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.
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.
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.
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.
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.
Microplastics in agricultural soils in China: Sources, impacts and solutions
This review examines microplastic contamination in Chinese agricultural soils, finding abundances ranging from about 5 to over 40,000 items per kilogram depending on location. The study identifies plastic mulching films as the most significant source, followed by abandoned greenhouses and organic fertilizers, and recommends sustainable agronomic practices to reduce soil microplastic pollution.
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.
Occurrence and characteristics of microplastics in soils from greenhouse and open-field cultivation using plastic mulch film
Researchers surveyed microplastic contamination in agricultural soils across three regions in China, comparing greenhouse and open-field cultivation that uses plastic mulch film. They found that microplastic abundance varied significantly by region and that the type of mulching practice accounted for over 34% of the variation in microplastic composition. The study provides important baseline data on how plastic film use in farming contributes to soil microplastic pollution.
Potential sources and occurrence of macro-plastics and microplastics pollution in farmland soils: A typical case of China
This study provides the first comprehensive survey of plastic pollution in Chinese farmland soil, analyzing data from 163 publications covering 728 sites. The average microplastic abundance was 4,537 particles per kilogram of dry soil, with agricultural plastic films and organic waste being the biggest sources. Since China is the world's largest user of agricultural plastics, these findings highlight how farming practices can lead to significant microplastic contamination of the soil that grows our food.
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.
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.
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.
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.
Microplastics abundance associated with farmland use types and the impact on soil microbial communities: A case study in Southern China
Researchers surveyed microplastic contamination across orchard, paddy field, and vegetable field soils in Southern China and analyzed how it affected soil microbial communities. They found microplastic levels ranging widely across sites, with very small particles under 30 micrometers being most common, and identified 32 different polymer types. The study shows that farmland use type and agricultural practices like plastic mulching significantly influence both the amount and type of microplastic contamination in soils.
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.
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.
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.
Distribution characteristics of microplastics in agricultural soils from the largest vegetable production base in China
Soil samples from greenhouse and open-field vegetable farms in Shouguang, China's largest greenhouse production region, contained 310–5,698 MP items/kg, with small particles (<0.5 mm) accumulating preferentially in deeper soil layers — indicating vertical migration over time.
The occurrence and distribution characteristics of microplastics in the agricultural soils of Shaanxi Province, in north-western China
Researchers surveyed microplastic abundance and polymer types in agricultural soils across multiple counties in Shaanxi Province, northwestern China, finding widespread contamination correlated with agricultural activity intensity and plastic mulch film use.
A case on source to soil to solutions: Distribution characteristics of microplastics in farmland soil of the largest vegetable base in Northwest China
Researchers surveyed microplastic contamination in farmland soil at the largest vegetable growing region in northwest China, finding an average of nearly 2,000 particles per kilogram of soil. Greenhouse-farmed soil had more microplastics than open-field soil, and contamination increased with years of farming, with plastic mulch film, irrigation water, and fertilizer all contributing to the pollution. While current levels were assessed as low ecological risk, the steady accumulation over time raises concerns about long-term food safety in intensively farmed 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.