Figure 15

Gibbs plot of groundwater in the research area. Figure is the Gibbs diagram of groundwater samples and ecological water recharge in the research area from 2015 to 2019, which is used to analyze the causes of groundwater and ecological water recharge. (a) and (b) respectively represent the analysis of major cations and anions in groundwater under different ratios of Na+/(Na+ + Ca2+) and Cl−/(Cl− + HCO3−), to analyze the origin of groundwater. Figure was created using Origin [2022].