地质科技通报2025，Vol.44Issue(2)：378-388,11.DOI:10.19509/j.cnki.dzkq.tb20240360
玛纳斯河流域河水-地下水转化驱动下的水文地球化学空间演化
Spatial evolution of hydrogeochemistry driven by river water-groundwater transformations in the Manas River Basin
摘要
Abstract
[Objective]The mutual conversion between river water and groundwater plays a crucial role in influencing the composition and evolution of hydrochemical components,and thus,has a significant impact on the water ecological environment.Hence,it is critical to gain a comprehensive understanding of the sources and evolution mechanisms of its hydrochemical components.The complex interactions between river water and groundwater can lead to alterations in the chemical constituents,which may have far-reaching consequences for the overall health and stability of the aquatic ecosystem.[Methods]This work focused on the Manas River Basin,which is located in a typical arid area of China,as the research area.A series of advanced methods were involved in this work,including hydrochemical diagrams(provide a visual representation of the chemical characteristics);ion ratio coefficient analysis(helps in determining the relative proportions of different ions);and inverse hydrogeochemical evolution(allows for a detailed exploration of the historical changes in the water chemistry).Through these methods,an in-depth study is carried out on the hydrochemical characteristics of river water and groundwater in different landforms within the basin,as well as the sources of major ion components and the evolution laws.[Results]These results obtained from the research are highly revealing.It is found that with the changes in landforms and the conversion relationship between river water and groundwater,the hydrochemical types of river water and groundwater experience a progressive evolution.Initially,they are mainly of the HCO3·SO4-Ca type,but gradually transform into the Cl-Na type.The natural driving factor responsible for these hydrochemical changes also shifts.In the disconnected segment,the hydrochemical type of water bodies is predominantly HCO3·SO4-Ca,and the main influencing factor is diafiltration.In the upper reaches of the river-groundwater exchange section,it is mainly SO4·Cl-Na type water,where leaching and mixing are the dominant processes.In the lower reaches of the interaction section,the hydrochemical type is mainly Cl-Na,which is dominantly affected by evaporation.The results of inverse evolution further quantitatively analyze the influence of water-rock interaction in the research area.Along the direction of groundwater flow,specific chemical reactions occur.For example,the precipitation of albite and anorthite takes place,while the dissolution of dolomite,gypsum,Ca-montmorillonite and rock salt is observed.Additionally,positive cation exchanges of Na-Mg and Ca-Mg are also detected.[Conclusion]The results of the study can provide a scientific basis for water environment protection and sustainable management in arid and semi-arid regions.关键词
水化学特征/河水-地下水转化/水文地球化学演化/玛纳斯河流域Key words
hydrochemical characterization/river water-groundwater transformation/hydrogeochemical evolution/Manas River Basin分类
天文与地球科学引用本文复制引用
马文静,王文科,侯昕悦,季德帅,马稚桐..玛纳斯河流域河水-地下水转化驱动下的水文地球化学空间演化[J].地质科技通报,2025,44(2):378-388,11.基金项目
国家自然科学基金青年项目(42202275) （42202275）
