福建省晋江市浅层地下水地球化学特征及环境质量评价  

An Evaluation of the Geochemical Characteristics and Environmental Quality of the Shallow Groundwater in Jinjiang China

作　　者：黄耀裔[1] 陈文成[1] 苏建云[1] 

机构地区：[1]泉州师范学院资源与环境科学学院,福建泉州362000

出　　处：《重庆师范大学学报（自然科学版）》2015年第2期154-161,共8页Journal of Chongqing Normal University:Natural Science

基　　金：国家创新实验项目(No.201310399020);福建省教育厅科技项目(No.JA12281);泉州市科技局项目(No.2012Z117)

摘　　要：以福建省晋江市调查获取的浅层地下水数据为基础,对25项测试指标的地球化学特征进行了统计,从变异系数分析该区浅层地下水中Mn2+、SO42-、NO2-、Cl-、PO42-等指标CV%大于1,说明受外界因素影响较大,其他指标受影响较小,空间分布较稳定。根据Piper三线图划分标准,该区浅层地下水类型主要为Cl-·HCO3-—K++Na+·Ca2+型。参照地下水质量标准,对该区浅层地下水进行了环境质量综合评价,结合GIS和地统计构建地下水环境质量数字地面模型,结果表明该区整体综合环境质量状况较好,优良率达到81.67%,但评价结果处于Ⅳ类和Ⅴ类的浅层地下水占17.06%,主要为TDS、Cl-、NO3-、NO2-、NH4+超标,分析认为与海水入侵,农业生产,工业、生活污水排放有关。A statistics of the geochemical characteristics of 25 elements has been studied in this paper on the basis of the shallow groundwater data obtained from the survey in the city of Jinjiang, Fujian Province. From the analysis of the coefficient of variation shows that several indicators （such as Mn2＋ .SO4 2- .NO2- .Cl- and PO4 2- ） in the shallow groundwater of the studied area have the CV% is greater than 1 ,illustrate the influence by external factors larger, other indicators have changed relatively insignificantly. Ac- cording to Piper trilinear diagram of groundwater, the type of the shallow groundwater in Jinjiang area is CI- · HCO3- -K＋ ＋ Na＋ ·Ca2＋. In the light of the quality standard for groundwater, the authors have made a comprehensive environmental quality evaluation of the local shallow groundwater. With the help of GIS and Geo-statistics, the digital terrain model of the groundwater environmen- tal quality has been made. The evaluation shows that the overall environmental quality condition is good, the excellent and good rate reaches 81.67%, but the shallow groundwater （IV, V） only account for 17.06%, with its TDS.Cl- .NO3- .NO2- .NH4 ＋ excee- ding the standard levels, which mainly results from seawater intrusion, agricultural production, industrial and domestic sewage dis- charge.

关 键 词：浅层地下水 地球化学特征 环境质量评价 晋江市 

分 类 号：X523[环境科学与工程—环境工程]