Hydrochemical Characteristics of Shallow Groundwater in Eastern Jianghan Plain
Yu Haotian
Ma Teng
Deng Yamin
Du Yao
Shen Shuai
Lu Zongjie
Abstract：The shallow groundwater is an important water supply source in the eastern Jianghan plain,but it is confronted with pollution and inferior quality of natural water.This study identifies the chemical characteristics,control processes and influencing factors of shallow groundwater in the study area based on the results of water chemistry,hydrogen and oxygen isotope,using methods of mathematical statistics and factor analysis.Results show that the shallow groundwater chemical types are mainly HCO3-Ca,the contents of Ca2+ and Mg2+ in the phreatic water are close to those in confined water,the contents of the As,Fe,NH4+ are lower than those in confined water,but the contents of the C1-,SO42-,Mn and NO3+ are higher than those in confined water.The shallow groundwater mainly originates from precipitation and the phreatic water has experienced a degree of evaporation and the mixture of surface water.Among the influencing factors of shallow groundwater chemical characteristics,the geologic origin may play a leading role;human activities have dramatically changed the chemical characteristics of the phreatic water,and the shallow confined water is mainly affected by water-rock interaction of the runoff process.
Keywords：eastern Jianghan plainshallow groundwaterhydrochemistryfactor analysision ratio methodhydrogeology
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 685-692 )