Analysis of hydrochemical sources and influencing factors of groundwater in typical counties along the upper reaches of Junshui River
Taking the groundwater in Tongcheng County as the research object,based on hydrogeological conditions,combined with ion ratio relationships and multivariate statistical analysis results,the main ion distribution characteristics,sources,and influencing factors of groundwater were studied.The results showed that the average pH of groundwater in Tongcheng County was 6.84,meaning that the groundwater in the study area was weakly acid.The average TDS of groundwater was 138.41 mg/L,within the range of brackish water.The cations and anions were dominated by Ca2+and HCO3-,respectively.The K+,Mg2+,Cl-and NO3-had great spatial variability due to the influence of human activities.The hydrochemical types were mainly HCO3-Ca·Na.The chemical characteristics of groundwater was mainly affected by water-rock interaction such as dissolution of carbonate rocks.Human activities and cation exchange also had a certain degree of influence on water chemical components.
groundwaterhydrochemical characteristicsion sourceinfluence factorsJunshui River
万方数据
维普
