Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, China
Heavy metals in soils can migrate into the food chain and affect human health. In particular, they can be released into water supplies through interactions between soils and water. It is therefore important to study the concentrations of heavy metals in soils surrounding sources of drinking water, b...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323001148 |
| _version_ | 1797902971437056000 |
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| author | Ye Sheng Zhanqi Wang Xu Feng |
| author_facet | Ye Sheng Zhanqi Wang Xu Feng |
| author_sort | Ye Sheng |
| collection | DOAJ |
| description | Heavy metals in soils can migrate into the food chain and affect human health. In particular, they can be released into water supplies through interactions between soils and water. It is therefore important to study the concentrations of heavy metals in soils surrounding sources of drinking water, but there is a lack of research in this area. A total of 7656 topsoil samples surrounding the core water source of Danjiangkou Reservoir in China were collected and analyzed for As, Hg and Pb. Moran’s I index and semivariograms were used to analyze the spatial correlation and variation of these heavy metals. The potential ecological risk index was used to evaluate heavy metal pollution. Fifteen natural and human factors were selected to explore the sources of heavy metal pollution using the GeoDetector model. The positive matrix factorization (PMF) model verified the reasonableness of the main factors identified by the GeoDetector model and further quantified two main sources of soil heavy metals. As, Hg and Pb were enriched to varying degrees in the soils. The potential ecological risk of Hg in soils was the most serious, with 24.67% of the area at high or very high risk. As and Pb both had a low potential ecological risk. The results of GeoDetector model and PMF model showed that the contributions of factor 1 (fertilizer application and automobile exhaust emissions) and factor 2(industrial waste) of soil heavy metal pollution were 49.8% and 50.2%, respectively. At last, the zoning control strategies were proposed in order to provide scientific reference for the management of soil heavy metal pollution. |
| first_indexed | 2024-04-10T09:25:37Z |
| format | Article |
| id | doaj.art-8dd388d0088844fa9000ad13d1718569 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-04-10T09:25:37Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-8dd388d0088844fa9000ad13d17185692023-02-20T04:08:41ZengElsevierEcotoxicology and Environmental Safety0147-65132023-03-01252114610Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, ChinaYe Sheng0Zhanqi Wang1Xu Feng2School of Public Administration, China University of Geosciences, Wuhan 430074, ChinaSchool of Public Administration, China University of Geosciences, Wuhan 430074, China; Key Laboratory for Rule of Law Research, Ministry of Natural Resources, Wuhan 430074, China; Corresponding author at: School of Public Administration, China University of Geosciences, Wuhan 430074, China.School of Public Administration, China University of Geosciences, Wuhan 430074, ChinaHeavy metals in soils can migrate into the food chain and affect human health. In particular, they can be released into water supplies through interactions between soils and water. It is therefore important to study the concentrations of heavy metals in soils surrounding sources of drinking water, but there is a lack of research in this area. A total of 7656 topsoil samples surrounding the core water source of Danjiangkou Reservoir in China were collected and analyzed for As, Hg and Pb. Moran’s I index and semivariograms were used to analyze the spatial correlation and variation of these heavy metals. The potential ecological risk index was used to evaluate heavy metal pollution. Fifteen natural and human factors were selected to explore the sources of heavy metal pollution using the GeoDetector model. The positive matrix factorization (PMF) model verified the reasonableness of the main factors identified by the GeoDetector model and further quantified two main sources of soil heavy metals. As, Hg and Pb were enriched to varying degrees in the soils. The potential ecological risk of Hg in soils was the most serious, with 24.67% of the area at high or very high risk. As and Pb both had a low potential ecological risk. The results of GeoDetector model and PMF model showed that the contributions of factor 1 (fertilizer application and automobile exhaust emissions) and factor 2(industrial waste) of soil heavy metal pollution were 49.8% and 50.2%, respectively. At last, the zoning control strategies were proposed in order to provide scientific reference for the management of soil heavy metal pollution.http://www.sciencedirect.com/science/article/pii/S0147651323001148SoilsHeavy metalsCore water sourcesPotential ecological riskSource identificationZoning control |
| spellingShingle | Ye Sheng Zhanqi Wang Xu Feng Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, China Ecotoxicology and Environmental Safety Soils Heavy metals Core water sources Potential ecological risk Source identification Zoning control |
| title | Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, China |
| title_full | Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, China |
| title_fullStr | Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, China |
| title_full_unstemmed | Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, China |
| title_short | Potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources: A case study from Danjiangkou Reservoir, China |
| title_sort | potential ecological risk and zoning control strategies for heavy metals in soils surrounding core water sources a case study from danjiangkou reservoir china |
| topic | Soils Heavy metals Core water sources Potential ecological risk Source identification Zoning control |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323001148 |
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