Anthropogenic and Climatic Causality of Changes in the Hydrological Regime of the Dnieper River

Abstract

The intensive use of water resources and the transformation of natural landscapes under the influence of human economic activity have led to changes in the natural water balance of river drainage basins. The negative processes thereof are intensified by climatic changes that have significantly disturbed the hydrological regime, determined by changes in water content and river flow dynamics. The retrospective study and prediction of the flow of the Dnieper River was carried out using multivariate statistics and adaptive methods of nonlinear time series analysis. The anomalous features were identified and the main periods of changes in the water regime of the river for 190 years (1818-2008) were determined using the standard root-mean-square deviation and wavelet analysis. As a result of non-linear prediction, it was determined that if the tendency of anthropogenic and climatic formation of the water regime of the Dnieper River sustains, there is a 90% probability of insignificant but steady trend and cyclical reduction of the average annual flow by 1.6 m 3 /s per year to 1120 ± 270 m 3 /s by 2040. The results of the detailed retrospective analysis for 190 years and the prediction of the probability of changes in the flow of the Dnieper river confirm the previous conclusions of many scientists regarding the significant transformation of the ecosystem of the transboundary river and provide new knowledge regarding the main stages of formation of the water regime and the probability of further regulation of the flow of the Dnieper river if the current conditions of the negative impact of economic activities are maintained in the transboundary basin.

Changes in Climate and Bioclimatic Potential in the Steppe Zone of Ukraine

“…Particularly negative manifestations of anthropogenic and climatic changes are concentrated in the Steppe zone (Lisetskii et al 2016). The level of water resources supply and their quality has decreased significantly (Pichura et al 2018), the natural water network of small and mediumsized rivers has been destroyed by 60% (Oti et al 2020, Lisetskii 2021), the frequency of droughts has increased (Assan et al 2020, Ukrainskiy et al 2020) and manifestations of erosion processes (Dudiak et al , 2020, the state of land resources deteriorated (Breus et al 2019, which led to a decrease in the yield of agricultural crops (Domaratskiy et al 2020, Vdovenko et al 2022. In order to increase the level of management efficiency in the agrarian sector of the economy (Vdovenko et al 2015, Mayovets et al 2021, it is necessary to substantiate environmental protection measures for the restoration and rational use of natural resources, to ensure the implementation of the principles of sustainable nature management, taking into account the spatio-temporal patterns of changes in climate and the bioclimatic potential of the territory.…”

Innovative Method for Water Deiron Ions Using Capillary Material

“…Today, due to the discharge of large quantities of insufficiently treated and untreated effluents, the pollution of surface as well as groundwater, which are sources of water supply, take place (Kyrii et (Walczak 2021., Pichura et al 2020). Therefore, in some industrial regions of Ukraine (Donetsk, Luhansk region and others), the water supply issues can be solved using large volumes of mine wastewater after sufficient treatment (Buzylo et al 2020.…”

Analysis of the dependence of winter wheat yielding capacity formation on mineral nutrition in irrigation conditions of southern steppe of Ukraine

“…This is accompanied by the negative anomalous phenomena of a single monthly, and in some cases, a semi-annual rainfall rate, which leads to large-scale manifestations of water-erosion destruction of grants (DUDIAK et al, 2019), which leads to a decrease in their fertility, accumulation of erosion products and accumulation of erosion products. degradation of the hydro-ecosystem (PICHURA et al, 2017(PICHURA et al, , 2018.…”