HYDROCHEMICAL EXPLORATION AND ECOLOGICAL STATE OF THE TERRITORY IN THE LOWER DOWN OF THE SYRDARYA RIVER
Mustafayev Z.S. Kenzhaliyeva B.T. Daldabayeva G.T. Alimbayev E.N.
2023National 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
2023#4Issue 460157 - 175 pp.
To conduct a qualitative and quantitative assessment of surface waters in the catchment areas of the lower reaches of the Syrdarya River, research bases have been created for the hydrological posts of Shardara, Kyzylorda and Kazaly based on the annual report «Aral-Syrdarya Basin Inspectorate for the Rational Use and Protection of Water Resources» of the Water Resources Committee Ministry of Geology, Ecology and natural resources of the Republic of Kazakhstan in the period 1996–2020 and used integral hydrochemical indicators of the water pollution index, the coefficient of maximum water pollution, the coefficient of maximum permissible water pollution and the Shannon trophic index, taking into account the regulatory criteria for maximum permissible concentrations for fisheries water use. The obtained results show that in modern conditions of the catchment areas of the lower reaches of the Syrdarya River, despite the quantitative indicators of water quality for all indicators, it has a negative trend, does not meet regulatory requirements, since pollution varies from the level from «polluted» to «moderately polluted», in general, not suitable for drinking water supply, and the ecological situation changes from «eutrophic» to «mesotrophic», indicating, as a rule, the degree of influence of anthropogenic activity is within the limits of uncontrolled and unaccounted for consequences (deterioration in the quality of water and land resources, as well as agricultural products)., which has become the reason for the impossibility of fulfilling the environment-forming and ecological functions of the surface waters of river basins.
assessment , ecological state , hydrochemical indicators , pollutant , river basin , surface water , water quality
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JSC «Institute of Geography and water security», Almaty, Kazakhstan
Kyzylorda University named after Korkyt-Ata, Kyzylorda, Kazakhstan
JSC «Institute of Geography and water security»
Kyzylorda University named after Korkyt-Ata
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