摘要
测试晋江市浅层地下水的pH值、矿化度、总硬度、总碱度、电导率等相关指标,利用GIS结合数理统计的描述性统计、相关性分析、因子分析等工具分析该区浅层地下水化学特征及成因.分析结果表明:该区浅层地下水中矿化度、总硬度、总碱度、电导率、Na++K+、Ca2+、Mg2+、Cl-、SO42-、HCO3-的变异系数较大,导致局部地段水质可能较差,其中矿化度、Na++K+、Ca2+、Mg2+、Cl-、SO42-绝对含量较大,是随环境因素变化的敏感因子.区域水化学类型以Cl-·HCO3-—K++Na+·Ca2+型为主.水化学成因主要受各种岩盐矿物的溶滤、阳离子交替吸附作用以及过度开采地下水导致海水入侵影响,其中溶滤和阳离子交替吸附、海水入侵贡献率最大,其次受工农业生产、生活污水排放等人类活动的影响.
Related index test of shallow groundwater in Jinjiang city pH,total dissoloved solid,total hardness, total alkalinity, conductivity, using GIS combined with the mathematical statistics, descriptive statistics, correlation analysis,factor analysis and other analysis tools in the area of shallow groundwater chemical characteristics and origin. The results show that, total dissoloved solid, total hardness, total alkalinity, conductivity,Na^＋＋ K^＋,Ca^2＋,Mg^2＋,Cl^-,SO4^2-and HCO3^-larger coefficient of variation,causing lots of local water quality may be poor,he degree of mineralization,Na^＋＋ K^＋、Ca^2＋、Mg^2＋、Cl^-and SO4^2-absolute amount is large,is a sensitive factor with the environmental factors. Water chemistry type field in Cl^-·HCO3^--K^＋＋ Na^＋·Ca^2＋. The formation of shallow groundwater chemical is mainly influenced by all kinds of halite mineral leaching,the cation exchange adsorption and the over exploitation of groundwater caused by seawater intrusion,which dissolved adsorption contribution rate maximum filter and the cation exchange effect; followed by the industrial and agricultural production,sewage emissions and other human activities.
出处
《吉林师范大学学报（自然科学版）》
2014年第2期145-152,共8页
Journal of Jilin Normal University:Natural Science Edition
基金
国家创新实践项目(201310399020)
泉州市科技项目(2012Z117)
关键词
浅层地下水
GIS
数理统计
成因分析
shallow groundwater
GIS
mathematical statistics
genetic analysis
