摘要
以四子王旗浅层地下水为研究对象,采用描述性统计,Piper三线图,Gibbs图及离子比例系数等方法对地下水化学特征,水化学类型及水化学成因进行研究。结果表明:研究区地下水整体呈弱碱性,孔隙水为淡水,裂隙-孔隙水为微咸水;孔隙水水化学类型沿着地下水补径排渗流路径呈现由"重碳酸型"到"硫酸型"再到"盐酸型"的演变特征,裂隙-孔隙水主要为SO4·Cl-Na型,其次为SO4·Cl-Ca·Mg型和SO4-Ca·Mg型;研究区地下水化学组分主要受水-岩相互作用和蒸发浓缩控制;白云石、方解石的风化溶解,阳离子交替吸附是影响研究区地下水化学组分的重要过程。
Taking the shallow groundwater of Siziwang Banner as the research object, descriptive statistics, Piper three-line diagram, Gibbs diagram and ion scale coefficient were used to study the groundwater chemical characteristics, water chemistry type and water chemical genesis. The results show that the groundwater in the study area is weakly alkaline, the pore water is fresh water, and the fracture-pore water is brackish water. The pore water chemical type shows the evolution of "heavy carbonate type" to the "sulphate type",then to the "hydrochloric acid type", along the groundwater replenishment path. The fracture-porosity water is mainly SO4·Cl-Na type, followed by SO4·Cl-Ca·Mg type and SO4-Ca·Mg type. The groundwater chemical composition in the study area is mainly affected by water-rock interaction and evaporation concentration control;weathering and dissolution of dolomite and calcite, and alternating cation adsorption are important processes affecting the chemical composition of groundwater in the study area.
作者
侯庆秋
董少刚
张旻玮
HOU Qingqiu;DONG Shaogang;ZHANG Minwei(College of Ecology and Environment,Inner Mongolia University,Hohhot 010021;Wulanchabu City Ecological Environment Bureau Siziwang banner Branch,Siziwang Banner 011800,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2020年第4期116-121,共6页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金项目(41562020,41702250,41002129)
内蒙古自治区自然科学基金项目(2018MS04004)
内蒙古自治区研究生科研创新项目(10000-16010109-29)资助。
