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61,005 resultsShowing papers similar to Assessing spatial variability and source identification of heavy metals in agricultural soils: A geostatistical and multivariate analysis of coastal eastern Zhejiang, China
ClearSpatial 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.
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.
Microplastics in agricultural soils on the coastal plain: Spatial characteristics, influencing factors and sources
Researchers surveyed microplastic contamination in agricultural soils along China's southeast coastal plain and found an average of 314 particles per kilogram of soil. They discovered that microplastic levels first increased and then decreased from inland to the coast, a pattern influenced by historical coastline expansion. The study used network analysis to identify textile-related activities and soil properties as the major factors driving microplastic accumulation in farmland.
Spatial Distribution and Geostatistical Prediction of Microplastic Abundance in a Micro-Watershed with Tropical Soils in Southeastern Brazil
Researchers used geostatistical methods to predict and spatially map microplastic abundance in agricultural soil across a micro-watershed with tropical soils in southeastern Brazil. The study found heterogeneous spatial distribution patterns influenced by land use and topography, demonstrating that kriging-based interpolation can produce reliable continuous maps for environmental risk assessment.
Effects of soil properties and land use patterns on the distribution of microplastics: A case study in southwest China
Researchers surveyed microplastic contamination in soils across different land use types in Guizhou Province, southwest China. The study found that soil properties and land use patterns significantly influence microplastic abundance and distribution, with agricultural and urban soils generally showing higher contamination levels than less intensively managed areas.
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.
[Meta-analysis of the Occurrence Characteristics and Influencing Factors of Microplastics in Agricultural Soil in China].
This meta-analysis pooled data from studies across China to assess microplastic pollution in agricultural soil. The research found that microplastic levels vary by region and are influenced by factors like temperature, precipitation, and farming practices. Since agricultural soil is where food crops grow, understanding microplastic contamination in farmland is directly relevant to food safety and human health.
Quantification and characterization of microplastics in farmland soils of Jiangsu Province, East China
Microplastic abundance in farmland soils across six plots in Jiangsu Province, China ranged from 667 to 9333 items per kilogram, with agricultural management practices and proximity to urban areas identified as key factors influencing contamination levels.
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.
Using machine learning to reveal drivers of soil microplastics and assess their stock: A national-scale study
Using machine learning on data from 621 sites across China, researchers identified nine key factors driving microplastic distribution in soil, including population density, plastic production, and agricultural practices. The study estimated that Chinese topsoil contains a substantial stock of microplastics, with concentrations varying widely by region. This large-scale analysis helps predict where microplastic contamination is worst, which is important for understanding human exposure through food grown in contaminated soil.
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.
Occurrence, distribution, and characteristics of microplastics in agricultural soil around a solid waste treatment center in southeast China
Researchers found microplastic contamination in all agricultural soil samples surrounding a solid waste treatment center in southeastern China, with concentrations up to 2,360 particles per kilogram and evidence that weathered polyethylene and polypropylene particles are accumulating heavy metals on their surfaces.
Microplastics in agricultural soils on the coastal plain of Hangzhou Bay, east China: Multiple sources other than plastic mulching film
Researchers analyzed agricultural soils from the Hangzhou Bay coastal plain and found microplastic concentrations of 571 pieces/kg in mulched soils versus 263 pieces/kg in non-mulched soils, with irrigation water identified as an additional major source alongside mulch films. The findings point to multiple input pathways for microplastic accumulation in Chinese farmland soils.
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.
Risk assessment and zoning of soil microplastics in a typical megacity, China
Researchers mapped microplastic contamination across soils in Nanjing, a major Chinese city, and found that risk levels varied significantly by location. Residential areas, government districts, and industrial zones showed the highest concentrations, with washing-related activities and soil properties being key factors influencing pollution levels. The study provides a risk-based zoning framework that could help city planners prioritize cleanup and prevention efforts in the most affected areas.
Identification of potentially contaminated areas of soil microplastic based on machine learning: A case study in Taihu Lake region, China
Researchers applied machine learning models — including random forest and support vector regression — to predict the spatial distribution of soil microplastic pollution in China's Taihu Lake region, finding that soil texture, population density, and proximity to known plastic sources were the dominant drivers, with nearly half of urban soils showing serious contamination.
Characteristics of Soil Heavy Metal Pollution and Health Risks in Chenzhou City
Researchers analyzed 600 soil samples in Chenzhou City, China, and found that while most areas had low to moderate heavy metal contamination, about 3% of samples showed high ecological risk from metals like mercury and cadmium near industrial zones. While focused on heavy metals rather than microplastics, the study is relevant because microplastics in soil can absorb and transport these same toxic metals, potentially increasing human exposure through crops grown in contaminated areas.
The potentiality of GIS for assessing soil pollution – A review
Not relevant to microplastics — this review examines how Geographic Information Systems (GIS) can be applied to assess and map soil pollution from heavy metals, pesticides, and other contaminants, with no substantive microplastics content.
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.
[Relationships Between Microplastic and Surrounding Soil in an E-Waste Zone of China].
Researchers measured microplastic contamination in soils around an e-waste dismantling zone in China, finding that plastic particles had distinct properties compared to those in less contaminated nearby soils, and that microplastic abundance correlated with other soil pollution indicators. E-waste processing sites are emerging as significant but understudied sources of microplastic soil contamination.
Prevalence of microplastics in agricultural soils in southern Portugal
Researchers conducted the first survey of microplastic contamination in agricultural soils from southern Portugal, collecting samples across four land-use areas with different farming practices and characterizing polymer types and their associations with agricultural history in a Mediterranean system.
Distribution characteristics and integrated ecological risks evaluation modelling of microplastics and heavy metals in geological high background soil
Researchers investigated the co-occurrence of microplastics and heavy metals in high geological background soil in Qianxi, China, and developed a new model for evaluating their combined ecological risk. They found elevated cadmium levels alongside significant microplastic contamination, with different crop rotation patterns influencing pollution distribution. The study proposes a two-dimensional index for assessing the joint environmental risks of microplastics and heavy metals in agricultural soils.
Prevalence of microplastics in agricultural soils in southern Portugal
Researchers conducted the first survey of microplastic contamination in agricultural soils from southern Portugal, collecting samples across four land-use areas with different farming practices and characterizing polymer types and their associations with agricultural history in a Mediterranean system.
Characterizing Surface Soil Heavy Metal Contamination and Source Attribution in the Qinghai Lake Basin
Researchers collected 227 surface soil samples across the Qinghai Lake Basin to characterize the spatial distribution and source attribution of twelve heavy metals using enrichment factors, geo-accumulation indices, and absolute principal component analysis, distinguishing natural geogenic contributions from anthropogenic inputs.