Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, China
The fragile karst ecosystems in eastern Yunnan are confronting severe challenges from soil metallic pollutants (SMPs). This study innovatively constructs a “Source-Risk-Driver” (SRD) framework to systematically unravel the dynamics of SMP contamination through three dimensions: source identification...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
|
| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X25006296 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850218954065182720 |
|---|---|
| author | Sijing Sun Junlei Wang Liyuan Mu Shiqi Peng Ao Li Naiming Zhang Li Bao |
| author_facet | Sijing Sun Junlei Wang Liyuan Mu Shiqi Peng Ao Li Naiming Zhang Li Bao |
| author_sort | Sijing Sun |
| collection | DOAJ |
| description | The fragile karst ecosystems in eastern Yunnan are confronting severe challenges from soil metallic pollutants (SMPs). This study innovatively constructs a “Source-Risk-Driver” (SRD) framework to systematically unravel the dynamics of SMP contamination through three dimensions: source identification, risk quantification, and driver prioritization. By integrating pollution indices, positive matrix factorization (PMF), and Geodetector models, a multidimensional analysis was conducted on six SMPs in the region. Key findings include: (1) SMPs originate from the interplay between karst geological processes (e.g., carbonate weathering) and anthropogenic activities (agricultural inputs, industrial emissions, and transportation). PMF source apportionment revealed that 17.9% of the pollution load stems from agro-natural synergistic sources. (2) The Natural-Agricultural Composite Source dominated ecological risks (contribution rate: 77.17%), primarily driven by cadmium. (3) Geodetector quantification identified SMP concentration gradients, socioeconomic pressures (GDP and population density), and climatic stressors (temperature and evapotranspiration) as the primary drivers of risk spatial differentiation. The SRD framework elucidates, for the first time, the cascading linkages from pollution sources to risk manifestation and their socio-environmental drivers in karst regions. This provides a theoretical basis for implementing source-oriented control strategies (e.g., prioritizing agro-natural synergistic source management) and establishing cross-sectoral governance frameworks (e.g., reconciling mineral exploitation with ecological conservation policies). |
| format | Article |
| id | doaj-art-8eddfe0035c4462e9baa66e4c6339bbc |
| institution | OA Journals |
| issn | 1470-160X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj-art-8eddfe0035c4462e9baa66e4c6339bbc2025-08-20T02:07:31ZengElsevierEcological Indicators1470-160X2025-07-0117611369910.1016/j.ecolind.2025.113699Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, ChinaSijing Sun0Junlei Wang1Liyuan Mu2Shiqi Peng3Ao Li4Naiming Zhang5Li Bao6Yunnan Engineering Research Center for Soil Fertilization and Pollution Remediation, Kunming 650000, ChinaCollege of Resources and Environment, Yunnan Agricultural University, Kunming 650000, China; Yunnan Engineering Research Center for Soil Fertilization and Pollution Remediation, Kunming 650000, ChinaCollege of Resources and Environment, Yunnan Agricultural University, Kunming 650000, China; Yunnan Engineering Research Center for Soil Fertilization and Pollution Remediation, Kunming 650000, ChinaCollege of Resources and Environment, Yunnan Agricultural University, Kunming 650000, China; Yunnan Engineering Research Center for Soil Fertilization and Pollution Remediation, Kunming 650000, ChinaCollege of Resources and Environment, Yunnan Agricultural University, Kunming 650000, China; Yunnan Engineering Research Center for Soil Fertilization and Pollution Remediation, Kunming 650000, ChinaCollege of Resources and Environment, Yunnan Agricultural University, Kunming 650000, China; Yunnan Engineering Research Center for Soil Fertilization and Pollution Remediation, Kunming 650000, ChinaCollege of Resources and Environment, Yunnan Agricultural University, Kunming 650000, China; Yunnan Engineering Research Center for Soil Fertilization and Pollution Remediation, Kunming 650000, China; Corresponding author.The fragile karst ecosystems in eastern Yunnan are confronting severe challenges from soil metallic pollutants (SMPs). This study innovatively constructs a “Source-Risk-Driver” (SRD) framework to systematically unravel the dynamics of SMP contamination through three dimensions: source identification, risk quantification, and driver prioritization. By integrating pollution indices, positive matrix factorization (PMF), and Geodetector models, a multidimensional analysis was conducted on six SMPs in the region. Key findings include: (1) SMPs originate from the interplay between karst geological processes (e.g., carbonate weathering) and anthropogenic activities (agricultural inputs, industrial emissions, and transportation). PMF source apportionment revealed that 17.9% of the pollution load stems from agro-natural synergistic sources. (2) The Natural-Agricultural Composite Source dominated ecological risks (contribution rate: 77.17%), primarily driven by cadmium. (3) Geodetector quantification identified SMP concentration gradients, socioeconomic pressures (GDP and population density), and climatic stressors (temperature and evapotranspiration) as the primary drivers of risk spatial differentiation. The SRD framework elucidates, for the first time, the cascading linkages from pollution sources to risk manifestation and their socio-environmental drivers in karst regions. This provides a theoretical basis for implementing source-oriented control strategies (e.g., prioritizing agro-natural synergistic source management) and establishing cross-sectoral governance frameworks (e.g., reconciling mineral exploitation with ecological conservation policies).http://www.sciencedirect.com/science/article/pii/S1470160X25006296KarstSoil metallic pollutantsSource analysisRisk AssessmentDriver Factor |
| spellingShingle | Sijing Sun Junlei Wang Liyuan Mu Shiqi Peng Ao Li Naiming Zhang Li Bao Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, China Ecological Indicators Karst Soil metallic pollutants Source analysis Risk Assessment Driver Factor |
| title | Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, China |
| title_full | Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, China |
| title_fullStr | Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, China |
| title_full_unstemmed | Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, China |
| title_short | Source-risk-driver analysis of heavy metal pollution in karst soils: An integrated assessment in eastern Yunnan, China |
| title_sort | source risk driver analysis of heavy metal pollution in karst soils an integrated assessment in eastern yunnan china |
| topic | Karst Soil metallic pollutants Source analysis Risk Assessment Driver Factor |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X25006296 |
| work_keys_str_mv | AT sijingsun sourceriskdriveranalysisofheavymetalpollutioninkarstsoilsanintegratedassessmentineasternyunnanchina AT junleiwang sourceriskdriveranalysisofheavymetalpollutioninkarstsoilsanintegratedassessmentineasternyunnanchina AT liyuanmu sourceriskdriveranalysisofheavymetalpollutioninkarstsoilsanintegratedassessmentineasternyunnanchina AT shiqipeng sourceriskdriveranalysisofheavymetalpollutioninkarstsoilsanintegratedassessmentineasternyunnanchina AT aoli sourceriskdriveranalysisofheavymetalpollutioninkarstsoilsanintegratedassessmentineasternyunnanchina AT naimingzhang sourceriskdriveranalysisofheavymetalpollutioninkarstsoilsanintegratedassessmentineasternyunnanchina AT libao sourceriskdriveranalysisofheavymetalpollutioninkarstsoilsanintegratedassessmentineasternyunnanchina |