基于分层构权主成分分析的皖北地下水水质评价研究  

Groundwater quality assessment in Northern Anhui based on multi-layer weighted principal component analysis

作　　者：李连香[1,2] 许迪[1,2] 程先军[1,2] 李晓琴[1,2] 余和俊 

机构地区：[1]中国水利水电科学研究院水利研究所,北京100048 [2]流域水循环模拟与调控国家重点实验室,北京100038 [3]安徽省定远县农村供水工程管理总站,定远233200

出　　处：《资源科学》2015年第1期61-67,共7页Resources Science

基　　金：国家十二五科技支撑项目(编号:2012BAJ25B00)

摘　　要：针对皖北地下水水质评价,以水文地质调查数据以及取样分析结果为依据,在主成分分析的基础上,构造分层构权主成分分析评价法,并借助Arc GIS描述地下水水质区域差异性。结果表明:分层构权主成分分析方法较传统主成分分析法更具有针对性和区分度,特别针对F-含量高的地下水,可靠性和准确度更高。针对皖北地区地下水水质,东部整体优于西部,其中泗县-灵璧-宿州-雌溪一带地下水水质较好,符合饮用水卫生标准;颍上-阜南-阜阳-临泉-界首-太和一带和砀山-淮北一带属于高氟地下水区域,应采取适宜的降氟措施方可作为饮用水水源,而固镇、蒙城地区地下水受TDS、Cl-和TH含量影响,地下水水质较差,不宜作为饮用水水源。Here,we assess groundwater quality in Northern Anhui,China based on regional hydrogeological investigations,groundwater sample testing and analysis,and multi-layer weighted principal component analysis(MLWPCA)with an extension from traditional principal component analysis(PCA). The MLWPCA method is based on factor analysis for the division subsystem and then a weighted synthesis of hierarchical principal component analysis results. Arc GIS was used to describe regional differences in groundwater quality. Results show that the MLWPCA method is more targeted and discriminatory than traditional principal component analysis in groundwater quality assessments. The MLWPCA method can be used in high fluoride groundwater quality assessment with more reliability and accuracy. As to groundwater quality in northern Anhui,the eastern part of the study area is superior to the western part overall. Groundwater quality is good and meets the national drinking water standards in Sixian,Lingbi,Suzhou and Cixi. Groundwater in Yingshang,Funan,Fuyang,Linquan,Jieshou,Taihe,Dangshan and Huaibei contains high levels of fluoride and belongs to high fluoride groundwater. Appropriate fluoride removal measures are needed to meet the national drinking water standards for drinking water sources in these areas. In Guzhen(Mengcheng regional area),due to higher TDS,Cl-and TH levels,the groundwater quality is poor and should not be used as drinking water;the groundwater requires deep water treatment measures in this area.

关 键 词：分层构权 主成分分析 GIS 水质评价 皖北地区 

分 类 号：X824[环境科学与工程—环境工程]