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Papers
20 resultsShowing papers similar to Spatial distribution characteristics and pollution evaluation of soil heavy metals in Wulongdong National Forest Park
ClearCharacteristics and Potential Ecological Risks of Heavy Metal Content in the Soil of a Plateau Alpine Mining Area in the Qilian Mountains
Researchers analyzed heavy metal contamination in soil samples from an alpine mining area in the Qilian Mountains and found that cadmium, mercury, and arsenic were the primary pollutants exceeding background levels. The study used multiple assessment methods to evaluate pollution status and identified both mining activities and natural geological sources as contributors. The findings provide baseline data for guiding ecological restoration efforts in high-altitude mining regions.
Characterizing surface soil heavy metal contamination and source attribution in the Qinghai Lake Basin
Researchers analyzed 227 soil samples across China's Qinghai Lake Basin to map heavy metal contamination, finding generally low pollution levels with transportation as a key source; they recommend future research examine the combined threat of heavy metals and microplastics in alpine ecosystems.
Accumulation Characteristics and Pollution Evaluation of Soil Heavy Metals in Different Land Use Types: Study on the Whole Region of Tianjin
Researchers analyzed heavy metal accumulation across different land use types throughout Tianjin, China, finding that pollution levels and spatial distribution varied significantly by land use, with industrial and traffic-related activities identified as primary contamination sources.
Heavy metal concentrations in soil and ecological risk assessment in the vicinity of Tianzhu Industrial Park, Qinghai-Tibet Plateau
Researchers measured the concentrations of ten heavy metals in soils near an industrial park on the Qinghai-Tibet Plateau and assessed the ecological risks. They found elevated levels of cadmium, mercury, and arsenic in some areas, with risk assessments indicating moderate to high contamination near the industrial zone. The study underscores the vulnerability of high-altitude plateau soils to industrial pollution, even in regions known for their environmental sensitivity.
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.
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.
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.
Impact Imposed by Urbanization on Soil Heavy Metal Content of Lake Wetland and Evaluation of Ecological Risks in East Dongting Lake in China
This Chinese study measured heavy metal contamination in wetland soils of East Dongting Lake, finding elevated concentrations of several metals linked to nearby industrial and agricultural activities. Wetland contamination with heavy metals often co-occurs with microplastic pollution, and these combined stressors can have synergistic harmful effects on wetland ecosystems.
Assessing spatial variability and source identification of heavy metals in agricultural soils: A geostatistical and multivariate analysis of coastal eastern Zhejiang, China
Researchers used geostatistical and multivariate analysis techniques to assess the spatial variability and sources of five heavy metals in agricultural soils along the coast of eastern Zhejiang, China. While focused primarily on heavy metals rather than microplastics, the study provides methodology relevant to understanding pollutant distribution in coastal agricultural areas. The findings identified industrial emissions, agricultural practices, and natural geological processes as key contamination sources.
Characterization of microplastics and the association of heavy metals with microplastics in suburban soil of central China
Microplastics in suburban soils of central China were characterized across three land-use types, with woodland containing the highest concentrations (4.1×10³ particles/kg) and 81.7% of particles under 100 μm, while XRF analysis confirmed heavy metals were enriched on plastic surfaces compared to surrounding soil. The study confirms that smaller microplastics are the dominant form and can act as carriers for heavy metal contamination in urban-adjacent soils.
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.
Assessment of heavy metal sources and health risks in soil-crop systems of fragmented farmland
Researchers assessed heavy metal contamination in farmland soils and crops in a fragmented agricultural area of Chongqing, China. They found that cadmium and arsenic posed the highest health risks, with children being more vulnerable than adults. The study identifies both natural geological sources and human activities like mining and farming as contributors to the contamination.
Non–Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai–Tibet Plateau, China
Researchers assessed heavy metal contamination in the Huangshui National Wetland Park on the Qinghai-Tibet Plateau, finding that cadmium and mercury pose non-negligible ecological risks across the urban wetland's three zones.
Distribution pattern and ecological risk assessment of heavy metals in Henan section of the Yellow River
Researchers assessed heavy metal pollution in sediments of the Henan section of the Yellow River, finding elevated concentrations of several metals including cadmium and lead, with ecological risk assessments indicating moderate to high risk in certain areas driven by both natural and anthropogenic inputs.
Source, Distribution, and Risk Estimation of Hazardous Elements in Farmland Soils in a Typical Alluvial–Lacustrine Transition Basin, Hunan Province
Researchers investigated the spatial distribution, sources, and health risk of hazardous elements including cadmium, lead, zinc, antimony, and arsenic in farmland soils of an alluvial-lacustrine transition basin in Hunan Province, China, attributing elevated concentrations to anthropogenic activities and assessing exposure risks.
Heavy metal pollution and ecological risk under different land use types: based on the similarity of pollution sources and comparing the results of three evaluation models
Researchers analyzed heavy metal contamination across five land use types on the Qinghai-Tibet Plateau, finding that industrial activities like metallurgy and mining were the primary sources of cadmium, copper, and lead pollution, with the highest risk levels in watered and urban lands rather than grasslands.
Spatial distribution characteristics, ecological risk assessment, and source analysis of heavy metal(loid)s in surface sediments of the nearshore area of Qionghai
Analysis of 93 surface sediment samples from the nearshore area of Qionghai found heavy metal contamination from natural weathering, agricultural, and industrial sources, with geo-accumulation indices and ecological risk assessments identifying priority elements of concern.
Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China
Researchers mapped heavy metal concentrations in sediments of the Wuliangsuhai wetland in China, finding arsenic and cadmium levels six- and seven-fold above background values respectively, largely from irrigation water inputs. High bioavailable fractions of cadmium, lead, and zinc raised concerns about ecological and human health risks in this agriculturally managed wetland.
The occurrence and distributions characteristics of microplastics in soils of different land use patterns in Karst Plateau, Southwest China
Researchers surveyed microplastic contamination across five different land use types in a karst mountainous region of southwest China. The study found that all soil types were polluted with microplastics, with garden land showing the highest average abundance at 4,200 particles per kilogram, and that land use patterns and crop types influenced the characteristics and concentrations of microplastic contamination.
Levels of Heavy Metals in the Soil of Illegal Open Dumpsites in Malaysia
Researchers collected and analyzed soil samples from two illegal dumpsites in Malaysia -- one receiving construction waste and one receiving municipal solid waste -- measuring heavy metal levels in triplicate over two sampling periods. They found elevated concentrations of multiple heavy metals at both sites, with temporal variation between sampling weeks, indicating ongoing leaching and accumulation risks for surrounding soil environments.