A Comprehensive Groundwater Vulnerability Model Based on PCA-AHP and Its Application
PENG Qian
LIU Fan
ZHOU Meichun
LING Jing
HUANG Lei
Abstract：Groundwater vulnerability assessment is an effective technique in actual groundwater pollution prevention and control,but traditional groundwater vulnerability indicators fail to take human activities into account.Therefore,this article proposes to construct a comprehensive groundwater vulnerability index system,which includes two systems:inherent vulnera-bility and special vulnerability.Inherent vulnerability is a traditional indicator of groundwater vulnerability,while special vul-nerability is introduced as the main groundwater quality indicator in the study area.Determine the main water quality indica-tors using principal component analysis(PCA),and calculate the weights of each indicator using analytic hierarchy process(AHP).Using the above method,this study takes a typical chemical park in the Yangtze River Economic Belt as an example to calculate the traditional groundwater vulnerability index and comprehensive vulnerability index,respectively.The results indi-cate that the vulnerability of traditional groundwater is significantly higher than the comprehensive groundwater vulnerability index,and the traditional groundwater vulnerability index does not have spatial heterogeneity and cannot match the distribu-tion of pollution in the study area.The improved groundwater vulnerability model can better reflect the true level of groundwa-ter vulnerability in the park,provide more effective assistance for park management,and provide scientific support for ecologi-cal environment protection and sustainable development.
Keywords：groundwaterprincipal component analysisanalytic hierarchy processspecial vulnerabilityvulnerability as-sessment
Publication Date：2024-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 67-74 )