A GIS-based analysis of intrinsic vulnerability, pollution load, and function value for the assessment of groundwater pollution and health risk

被引:5
作者
Wang, Yuanyuan [1 ]
Fu, Kang [2 ]
Zhang, Han [1 ]
He, Guangyi [1 ]
Zhao, Rui [1 ]
Yang, Cheng [1 ]
机构
[1] Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu, Peoples R China
[2] PowerChina Sichuan Elect Power Engn Co Ltd, Chengdu, Peoples R China
来源
HUMAN AND ECOLOGICAL RISK ASSESSMENT | 2022年 / 28卷 / 01期
基金
中国国家自然科学基金;
关键词
Groundwater pollution; risk assessment; health risk; GIS; land use; MODIFIED DRASTIC MODEL; NITRATE CONTAMINATION; SHALLOW GROUNDWATER; AGRICULTURAL AREA; KATHMANDU VALLEY; QUALITY; PLAIN; HAZARD; DISTRICT; ENTROPY;
D O I
10.1080/10807039.2021.2011123
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Groundwater pollution risk assessment is an effective tool for the control and prevention of groundwater pollution. However, the risk is generally difficult to interpret because it is affected by both natural and anthropic factors such as topography, aquifer characteristics, land-use changes, and mining process. In this study, a GIS-based analysis of aquifer vulnerability (V), groundwater pollution load (L), and groundwater function value (F) were combined to comprehensively evaluate the groundwater pollution risk in a typical mixed land use area of Chengdu Plain, in China. Groundwater pollution risk assessment was then validated by a groundwater quality evaluation using the comprehensive water quality index method. A health risk assessment was conducted to evaluate the susceptible population exposed to the groundwater pollution. The results showed that the estimated 'high' and 'very high' pollution risk areas together accounted for 24.85% of the study area, mainly located in the southeast and southwest of the plain area with highly permeable aquifer, abundant amounts of groundwater storage, a shallow water table, and near pollution sources. In addition, our results revealed that 14% of groundwater in the study area posed an unacceptable non-carcinogenic health risk to children. The risk assessment of groundwater pollution and human health in the study area can provide effective support for strengthening groundwater management and pollution control.
引用
收藏
页码:1 / 21
页数:21
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