Hydrochemical Distribution Characteristics of Shallow Groundwater in Guanzhong Basin
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Abstract:
The descriptive analysis, correlation analysis, and principal component analysis were used to investigate the distribution characteristics and formation function of groundwater chemical components in the Guanzhong Basin based on 162 groundwater samples. The results showed that the dominant cation is HCO3- of the shallow groundwater in the study area, and the dominant anion is Ca2+ in the south of Wei River, and Na+ in the north of Wei River. The concentrations of HCO3-, Ca2+, and Mg2+ were stable while the concentrations of Cl- and SO42- varied significantly and were sensitive to the environmental factors. The formation functions of hydrochemical field were different between the north and south of Wei River with the weathering and leaching functions in the south of Wei River and the mineral dissolution and evaporation concentration functions in the north of Wei River. The results in this study can provide scientific references for the sustainable utilization of water resources and environmental management in this area.
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