Main Article Content
Aims: The aim of the study is to determine the impact of the water content in the forming of the ecological condition of the rivers of Siverskyi Donets Basin (Ukraine) based on chemical and physico-chemical observations.
Study Design: The ecological condition of rivers is determined by their water contents and anthropogenic loading. Therefore, this study focused on the identification of the main trends in the changes of the quality of river water in the conditions of global warming impact.
Place and Duration of Study: The study addressed the industrial Chuhuiv, Zmiiv, Lysychansk cities located along the main river, the Udy River (discharges of municipal and industrial wastewater of the Kharkiv City), Kazennyi Torets, Kryvyi Torets, Bakhmutka (discharges of mine water from Donetsk coal basin) and Luhan (industrial and agricultural waste water) for 26 years from 1990 to 2015.
Methodology: Relationships between the indicators of water quality and the characteristics of water content were established from regression analysis. Determination of the ecological condition of the rivers was in the form estimated as a complex index of the ecological condition of their water, that based on the chemical and physico-chemical variations generated from many years of observations for them in the water.
Results: The study findings show that the indices of mineralization block and sanitary-toxicological block are increasing as the water content decreases, and the indices of toxicological and fishery blocks are increasing. The relationship between the indices of the ecological-sanitary block and water content was not found to be statistically significant. The overall index of the ecological condition of the rivers water steadily increases as the water content increases.
Conclusion: The water quality the rivers of the Siverskyi Donets Basin puts them into the categories of "polluted" and "very polluted" rivers. The analysis of the block indices of water quality generated in this study revealed that the substances of toxicological block (ammonium, nitrites, SSAS, heavy metals) and fishery block (petroleum products, phenols) are the most impacting on the water quality of the rivers of the Siverskyi Donets Catchment.
Hrebin V, Koliesnikova A. Modern changes in volumes and structure of water use in the Siverskyi Donets River Basin (within Ukraine). Hydrology, hydrochemistry and hydroecology. 556.18. Ukraine.
Anonymous. State of the Siverskyi Donets Basin and Related Risks under Military Operations. Technical Report. 2018;86.
Accessed 14 May 2019.
Stepanenko SM, Polovyi AM, editors. Climatic risks of functioning of Ukrainian economy sectors in conditions of climate change. 8th ed. Odesa (TES): Odessa State Environmental University; 2018.
Osadchyi VI, Nabyvanets BI, Linnik PM, et al. Processes of formation the chemical composition of surface water. 3rd ed. Kyiv: Nika-Center; 2013.
Romanenko VD. Fundamentals of hydroecology. 30th ed. Kyiv: Genesis; 2004.
Osadcha N, Ukhan O, Chekhnii V, Holubtsov O. Estimation of emission of biogenic elements and organic substances into the surface waters of the Siverskyi Donets Basin from diffuse sources. Problems of hydrology, hydrochemistry, hydroecology. 978-966-7067-39-7. Ukraine; 2010.
Khilchevskyi VK, Osadchyi VI, Kurylo SM. Regional hydrochemistry of Ukraine. 7th ed. Kyiv: publishing and printing center “Kyiv University”; 2019.
Osadchyi V, Osadcha N, Nabyvanets Yu, Mostova N, et al. Theory and practice of research of chemical composition of surface waters of Ukraine under conditions of influence of natural and anthropogenic factors. Problems of hydrology, hydro-chemistry, hydroecology. 978-966-7067-34-2. Ukraine.
Ladyzhenskyi VM, Dmytrenko TV, Ishchenko AV. Applied hydroecology. 3th ed. Kharkiv: O.M. Beketov NUUE; 2013.
Loboda N, Smalii O. Dynamics of river water quality along the Siverskyi Donets river of different discharge. Proceedings of the VI International Scientific and Practical Conference. 2018;17(2):00-773.
Yatsik AV. Ecological bases of rational water use. 2th ed. Kyiv: Geneza; 1997.
Vasenko OH, Hrytsenko AV, Karabash HO, Stankevych PP, et al. Siverskyi Donets: Water and environmental atlas. 1th ed. Kharkiv: VD "Ryder"; 2006.
Zabolotnia T, Gorbachova L, Khrystiuk B. Estimation of the long-term cyclical fluctuations of snow-rain floods in the Danube basin within Ukraine. Meteorology Hydrology and Water Management. 2019;2.
Accessed 14 November 2018.
Yurasov SM, Safranov TA, Chuhai AV. Assessment of natural water quality. 4th ed. Odesa: Publisher; 2011.