中国地质调查2025，Vol.12Issue(6)：88-96,9.DOI:10.19388/j.zgdzdc.2025.160
干旱内陆盆地地下水氢氧同位素空间变化特征
Spatial variation characteristics of hydrogen and oxygen isotopes in groundwater of arid inland basin:A Case Study of Sugan Lake Basin
摘要
Abstract
Sugan Lake Basin is a typical salinized wetland ecosystem in China's arid inland basins,so exploring the for-mation and evolution mechanism of groundwater is of vital importance for the protection of the wetland ecosystem in the study area.Based on the stable isotope compositions of hydrogen and oxygen(δ2H,δ18O)and d-excess in the groundwater of Sugan Lake Basin,the authors adopted correlation analysis and spatial interpolation method to analyze the compositions characteristics of oxygen and hydrogen isotope of groundwater and identify the main recharge sources of groundwater.The spatial variations of stable isotope in groundwater were also decomposed and regional hydrological cy-cle processes were revealed.The results were concleded as follows:① The atmospheric precipitation in the high-alti-tude mountainous areas surrounding the study area served as the primary recharge source for groundwater in Sugan Lake Basin.② The values of δ2H,δ18O and d of groundwater were-105.87‰ to 14.61‰,-13.93‰ to-0.17‰ and-2.62‰ to 18.1‰,respectively.Spatially,δ2H and δ18O show the enrichment characteristics in the southeast and depletion in the northwest,while d had the feature of being higher in the east and lower in the west.③ The spatial dis-tribution characteristics of hydrogen isotopes of groundwater were affected by the sources of recharge,mixing and evap-oration.④ Groundwater in the eastern part of the study area was mainly recharged by the mountain groundwater lateral runoff and river water seepage,while the groundwater in the northwestern part was mainly recharged by the mountain groundwater lateral runoff.The results could provide important scientific support for the sustainable management of wa-ter resources and ecological environment protection in this area.关键词
地下水/氢氧稳定同位素/水文循环过程/苏干湖盆地Key words
groundwater/hydrogen-oxygen stable isotopes/hydrological cycle process/Sugan Lake Basin分类
天文与地球科学引用本文复制引用
谷瑜,韩涤清,宁佳,刘喜梅,王金金..干旱内陆盆地地下水氢氧同位素空间变化特征[J].中国地质调查,2025,12(6):88-96,9.基金项目
河南省地质矿产勘查开发局"黄河下游中牟段水循环及其湿地生态系统保护与恢复研究(编号:豫地环[2022]4号)"与河南省水利厅"周口市中深层地下水可更新能力评价(编号:SCBZXSZYK-2025-167)"项目联合资助. （编号:豫地环[2022]4号）
