HYDROCHEMISTRY AND ION FLOW DYNAMICS OF SYR DARYA TRANSBOUNDARY RIVER WITHIN KAZAKHSTAN
Tairov A.Z. Leman M. Tolekova A. Abdibekov D.U. Sorokina T.E.
2025National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2025#2025Issue 2290 - 306 pp.
The current study examines the hydrochemistry and ion flow dynamics of the transboundary Syr Darya River within Kazakhstan, focusing on long-term changes in chemical composition under increasing anthropogenic pressure. These transformations pose challenges for water resource management and aquatic ecosystem stability in arid regions. The research covers the period from 1910 to 2020, analyzing shifts in the river’s hydrochemical characteristics. The findings indicate a transition from a bicarbonate-calcium type, typical of natural waters, to a sodium-sulfate type, reflecting significant anthropogenic influence. This shift is driven by intensive irrigation, industrial discharge, and climatic variability. A persistent trend of declining water quality and rising mineralization levels is observed, underscoring the cumulative impact of human activities. The study employs hydrochemical data analysis, ion composition assessment, and statistical modeling to identify key transformation processes in transboundary water chemistry. These methods enable the quantification of anthropogenic effects and the prediction of future changes. The results contribute to a deeper understanding of hydrochemical dynamics in transboundary waters, with direct applications in environmental monitoring, water resource management, and ecosystem conservation. The methodology is applicable for forecasting hydrochemical trends in other transboundary basins affected by similar climatic and anthropogenic pressures, supporting the development of sustainable water management strategies.
chemical composition , hydrochemistry , ionic runoff , Syrdarya , Transboundary waters , water runoff
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Institute of Geography and Water Security, Almaty, Kazakhstan
Institute of Geography and Water Security
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