Browsing by Author "Shakhman, I."

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    MATHEMATICAL DESCRIPTION OF THE PHYSICAL PROCESS OF FORMING THE SURFACE WATERS QUALITY
    (2020) Bystriantseva, A.; Shakhman, I.; Yermakova-Cherchenko, N.; Goncharenko, T.; Бистрянцева, А. М.; Шахман, І. О.; Єрмакова-Черченко, Н. О.; Гончаренко, Т. Л.
    Ecological state of the Lower Section of the Dnieper River was estimated by method of calculation of integrated index on the basis of monitoring over the years 2013–2016. Self-purification potential and capability of restoration in time and space (along the river stream) of the aquatic ecosystem of the lower section of the Dnieper River was established. The method for assessing the quality of surface water by hydrochemical parameters in accordance with the fishery standards as the most sensitive to changes of the ecological state of the river was used. The current calculation method takes into account the effect of the total action of substances and is approved practically for the analysis of the ecological state of other rivers. It was discovered, that the state of surface water of region was characterized as unsteady with the low of ecological reliability. Consequently, the processes of self- purification potential and capability of restoration of the aquatic ecosystem are at the low level. The ecological state of the river is characterized as an ecological regress.
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    SPATIO-TEMPORAL ANALYSIS OF THE ECOLOGICAL STATE OF THE DNIESTER RIVER TRANSBOUNDARY WATER
    (2021) Shakhman, I.; Bystriantseva, A.; Шахман, І. О.; Бистрянцева, А. М.
    The ecological state of transboundary water of the Dniester River Basin was analyzed in the context of cross-border cooperation. The major objects of economic activity affecting the state of transboundary water were identified in the Dniester River Basin in Ukraine and Republic of Moldova. It was established that over the years of transboundary cooperation, a decrease in the average annual concentrations of Suspended solids, Nitrites, Chlorides and Sulfates below the maximum permissible values was achieved. The ecological state of the Dniester River transboundary water in time and space was investigated using an integral assessment of the state of the Dniester River water environment. It is recommended to assess the transboundary water ecological state using complex indices. An assessment of the ecological reliability of the Dniester River Basin transboundary water in 2020 was carried out. The research results show that the use of transboundary water of the Dniester River Basin is potentially dangerous. Further cooperation between Ukraine and the Republic of Moldova in the issue of reducing the wastewater containing harmful substances with a synergistic effect, is encouraged.