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蛤蟆通流域是我国东北地区主要的高标准基本农田建设区,掌握其水化学特征规律,可以为该区水质评价和水文循环机制的进一步研究提供参考,为高标准农田的建设积累理论依据。结合蛤蟆通流域水文地质调查项目的数据,运用Piper三线图、相关性分析及Arc GIS空间分析技术等多种方法综合分析了地下水化学特征及其成因。结果表明:沿地下水径流方向地下水化学类型由HCO3-Ca型和HCO3-Ca+Mg型转化为HCO3-Na+Ca型;地下水水化学作用以溶滤作用和阳离子交替吸附作用为主。
Toad River Basin is the main high-standard basic farmland construction area in Northeast China. Grasping the characteristics of water chemistry can provide references for further research on water quality evaluation and hydrological cycle mechanism in this area, and provide theoretical basis for the construction of high-standard farmland. Based on the data of the hydrogeological survey project in the Toadong Pass basin, the chemical characteristics of groundwater and its causes were comprehensively analyzed by using Piper three-line graph, correlation analysis and ArcGIS spatial analysis technology. The results showed that the chemical type of groundwater changed from HCO3-Ca and HCO3-Ca + Mg to HCO3-Na + Ca along the direction of groundwater runoff. The chemical reaction of groundwater was dominated by leaching and cation exchange.