Guangxi Geoenvironmental Monitoring Station, Guilin 530023, China.
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Environ Pollut. 2019 Feb;245:627-633. doi: 10.1016/j.envpol.2018.10.017. Epub 2018 Oct 9.
Groundwater pollution is a critical concern in karst areas. This study used the PLEIK (P: protective cover; L: land use; E: epikarst development; I: infiltration conditions; K: karst development) method to assess the vulnerability of groundwater pollution in Guangxi Province, which is the largest karst area in China. The pollution sources and attenuation consist of groundwater pollution hazards. The attributions for the vulnerability and hazard were measured using the geodetector method from geographical information system in Luzhai County in Guangxi. The results confirmed that the vulnerability of groundwater pollution was higher in karst areas than in non-karst areas. In Guangxi, 36.35% of the groundwater samples were polluted. A total of 49.73% of the areas in Luzhai County contained hazardous levels of pollution. The risk assessment map, which interacted with the vulnerability and hazards, was 58.2% similar to the groundwater pollution distribution. The influence of the hazard on groundwater pollution was 2.6 times that of the vulnerability. It is crucial to control pollution sources to prevent groundwater pollution.
地下水污染是喀斯特地区的一个关键问题。本研究采用PLEIK（P：保护盖；L：土地利用；E：表层岩溶带发育；I：入渗条件；K：岩溶发育）方法评估了中国最大的喀斯特区广西的地下水污染脆弱性。污染源和衰减由地下水污染危害组成。利用地理信息系统中的地理探测器方法，对广西鹿寨县的脆弱性和危害进行了度量。结果证实，喀斯特地区的地下水污染脆弱性高于非喀斯特地区。在广西，有 36.35%的地下水样本受到污染。鹿寨县共有 49.73%的地区存在污染危害。与脆弱性和危害相互作用的风险评估图与地下水污染分布的相似度为 58.2%。危害对地下水污染的影响是脆弱性的 2.6 倍。控制污染源对于防止地下水污染至关重要。
