Groundwater Vulnerability and Groundwater Contamination Risk in Karst Area of Southwest China

Groundwater pollution in karst areas is often the result of the interaction of hydrogeological characteristics and human activities. In this study, a chimeric evaluation system of groundwater vulnerability and pollution load was constructed, and the groundwater contamination risk was intuitively dis...

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Bibliographic Details
Published in:Sustainability 2022-11, Vol.14 (21), p.14483
Main Authors: Liu, Jingchao, Wu, Jin, Rong, Shaowei, Xiong, Yanna, Teng, Yanguo
Format: Article
Language:English
Subjects:
Aquifers
Climate change
Contamination
Environmental protection
Geology
Groundwater
Groundwater management
Groundwater pollution
Groundwater quality
Human influences
Hydrogeology
Industrial areas
Industrial parks
Industrial plants
Industrial pollution
Karst
Land use
Lithology
Methods
Pollutants
Pollution load
Pollution sources
Quality assessment
Risk levels
Sustainability
Water protection
Water quality
Water, Underground
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Summary:Groundwater pollution in karst areas is often the result of the interaction of hydrogeological characteristics and human activities. In this study, a chimeric evaluation system of groundwater vulnerability and pollution load was constructed, and the groundwater contamination risk was intuitively displayed using a risk map. The study area is located in Qiannan, a typical karst area in Southwest China. Groundwater vulnerability was mainly calculated using the PLEIK model. Pollution source load evaluation was evaluated using the classification method. The groundwater pollution status was evaluated by the CCME WQI method. The results show that the groundwater vulnerability in the research area was mainly at a medium level. The areas with high pollution load values were mainly distributed in industrial parks and other pollution-source-gathering areas. The results of the water quality evaluation show that the groundwater quality in the study area was generally good. However, the impact of some pollution sources on the surrounding groundwater still cannot be ignored. The results reveal the risk level of groundwater pollution in typical karst areas and provide theoretical support for regional groundwater protection.
ISSN:2071-1050
2071-1050
DOI:10.3390/su142114483