现代地质Issue(6)：1329-1336,8.
江苏泗阳城区浅层地下水化学特征及其影响因素
Hydrochemical Characteristics and Influencing Factors of Shallow Groundwater in Siyang Area,Jiangsu Province
摘要
Abstract
Based on experimental data of the shallow groundwater samples,the hydrogeological characteristics in Siyang area and spatial distributions of the chemical components were studied,meanwhile,the formation char-acteristics and influencing factors were discussed.The results showed that the hydrochemical type of shallow groundwater in Siyang area presented some horizontal zoning regularity.In the southwest of the Grand Canal, HCO -3 is the predominant anion of the shallow groundwater;total dissolved solids (TDS)is less than 1 g/L;to-tal hardness is less than 450 mg/L,and the water quality is generally good.While in the northeast of the Grand Canal,the predominant anions of shallow groundwater are HCO -3 ,Cl - and SO2 -4 ;TDS usually is within 1 -3 g/L;total hardness is more than 450 mg/L;the water is brackish and the quality is bad.In addition,the am-monium nitrogen and nitrate nitrogen contaminations of the shallow groundwater are obvious in Siyang area,and the spatial distributions there have significantly uneven regional differences,ammonium nitrogen and nitrate ni-trogen concentrations are high at both sides of the Grand Canal and near the Siyang farm.NH +4 -N high-concen-tration in shallow groundwater is less than that in 18 meters in the vertical,while NO -3 -N high-concentration in shallow groundwater is within 8 -20 meters.The spatial variations of hydrochemical characteristics of shallow ground-water in Siyang area are affected by the interactive marine and terrestrial deposit,the chemical constitu-ents of the supply source,supply and runoff flow conditions of aquifer medium and human activities.关键词
浅层地下水/空间分布特征/水化学类型/三氮/影响因素/泗阳城区/江苏Key words
shallow groundwater/spatial distribution characteristic/type of hydrochemical component/am-monia-nitrogen,nitrate and nitrite-nitrogen/influencing factor/Siyang area/Jiangsu分类
天文与地球科学引用本文复制引用
汪名鹏..江苏泗阳城区浅层地下水化学特征及其影响因素[J].现代地质,2014,(6):1329-1336,8.基金项目
江苏省省级地勘基金项目“洪泽湖北部黄泛区平原地质环境调查评价”（苏财建〔2011〕425号）。 （）
