中国岩溶2018，Vol.37Issue(2)：211-217,7.DOI:10.11932/karst20180207
典型岩溶丘陵区地下水水化学特征及地球化学敏感性分析——以武冈东部地区为例
Hydrochemical characteristics and geochemical sensitivity of groundwater in typical karst hilly regions:A case study of Eastern Wugang
摘要
Abstract
This study investigated hydrochemical characteristics and geochemical sensitivity of groundwater in a typical karst hilly region.The results indicate that Ca2 + and Mg2 + are the main cations and HCO -3 and NO -3 are the main anions in the karst groundwater system,which are affected by water-rock interaction and human activities;groundwater system,which is affected by water-rock interaction and human activities.The result also indicates the ratio of Mg2 +/ Ca2 + ,controlled by lithology,is the highest in the dolomite second highest in the limestone dolomite,and the lowest in limestone.In general,the karst groundwater in the study area shows a high geochemical sensitivity which follows the order as HCO -3 >Ca2 + >Mg2 + >NO -3 >SO 2 -4 > Cl- > Na+ > K+ .In particular,the cation Ca2 + is the most sensitive,followed by Mg2 + ,while HCO -3 is the most sensitive inthe anions,followed by NO -3 .The sensitivity level of the karst groundwater in the study area is classified by the most sensitive factor HCO -3 .Consequently,the low sensitive water spots account for only 7.27％,the medium sensitive ones account for about 25.45％,while the highly sensitive ac-count for about 67.28％.These statistic results of the geochemical sensitivity division show that the protec-tion of groundwater is very important and urgent.关键词
岩溶丘陵区/地下水/水化学/地球化学/敏感性Key words
karst hilly area/groundwater/water chemistry/geochemistry/sensitivity分类
天文与地球科学引用本文复制引用
罗飞,苏春田,潘晓东,杨杨,赵光帅..典型岩溶丘陵区地下水水化学特征及地球化学敏感性分析——以武冈东部地区为例[J].中国岩溶,2018,37(2):211-217,7.基金项目
中国地质调查局项目(DD20160303) （DD20160303）
国家自然科学基金项目(41502332) （41502332）
中国地质科学院岩溶地质研究所基本科研业务费项目(121237128100269) （121237128100269）
