泾源县地下水水质多元统计分析

Multivariate statistical analysis of groundwater quality in Jingyuan County

为了给泾源县地下水合理开发利用与新农村建设提供基础理论支持,采用泾源县45个地下水水样的水化学资料,利用聚类分析和主成分分析对泾源县地下水水化学特征和水质状况进行了研究.基本描述性统计结果表明,研究区地下水水质基本满足生活饮用水卫生要求.聚类分析表明,进行指标聚类后,类的个数并未比聚类前明显减少,表明地下水各指标之间相关关系不明显.主成分分析结果表明,可以用9个独立的主成分代表原始19个指标因子,每个主成分反映了不同的水质指标以及各指标之间的关系.多元统计分析为泾源县地下水水质评价和水质管理提供了一种新方法.

The purpose of this study is to provide theoretical support for the rational exploitation of groundwater and the new rural construction in Jingyuan County.A total of 45 groundwater samples were collected and cluster analysis and principal component analysis were introduced to study on the groundwater chemical characteristics in Jingyuan County.Basic descriptive statistics suggest that the groundwater quality in the study area meets drinking water requirements.Cluster analysis shows that the number of class doesn′t significantly reduce after cluster,which indicated that the groundwater correlation between each index is not significant.Principal component analysis shows that the first 9 principal components could be used independently to represent the original 19 factors,and the principal components reflect different groundwater quality indices and the relationships between them.Multivariate statistical analysis,a new method,provides a new tool for evaluation and management of groundwater quality in Jingyuan County.