Water Supply of the Ukrainian Polesie Ecoregion Drained Areas in Modern Anthropogenic Climate Changes

Abstract

The paper focuses on research on improving the water supply of drainage systems of humid areas in the context of anthropogenic climate change. The aim of the research is to elaborate on the ways for increasing the available water supply of drainage systems and restoring active water regulation on reclaimed lands in a changing climate. Reclaimed lands are the main factor of sustainable agricultural production in Ukraine and guarantors of its stability. The area of drained lands in Ukraine is about 3.2 million hectares, including 2.3 million hectares drained with the help of closed drainage; in an area of 1.3 million hectares a two-way regulation of the soil water regime is carried out. An increase in air temperature and uneven distribution of precipitation, which has a torrential, local character in the warm period, do not allow for the e ective accumulation of moisture. The recurrence of droughts in di erent justified climatic zones of Ukraine has increased by 20–40%, which prevents sustainable agricultural production in the zone of su cient atmospheric moisture, in particular the Polesie Ecoregion. In this paper, the analysis of water consumption of reclaimed lands in the Polesie Ecoregion of Ukraine is carried out, on the examples of the drainage system “Maryanivka” and the calculation of the water supply for the corn and winter wheat.

Formation of the Water Regime of the Soil on Drained Lands in Modern Climate Conditions

“…Deterioration of the conditions of natural moisture supply in an increasingly large part of the territory of the zone of drainage reclamation, as well as the formation of conditions not only of overwetting of soils, but also of moisture deficit in them, especially in the second half of the growing season, increases the role of drainage systems in the sustainable management of agriculture on drained lands [31,32].…”

“…), the cultivation of which is subject to the market conditions of agricultural goods. Since modern agricultural production is accompanied by non-observance of crop rotations and inadequate scientific justification of agrotechnical and hydromelioration measures, for the effective use of drained lands it is necessary not only to develop the structure of cultivated areas, but also water regulation technologies that take into account the specialization and needs of modern agricultural production [11,31].…”

Study of contemporary climate changes in the Ukrainian humid zone (on the example of the Volyn Region)

“…Analysis of the climate change impact on agricultural production is relevant today, especially in the area of drainage reclamation, where most changes in the production structure of agricultural enterprises have recently taken place [3,[8][9][10][11][12][13][14][15][16][17][18][19].…”

Mathematical Modeling of Water Regimes on Drained Lands

“…ІІ. METHODS AND TECHNIQUES Well-known Ukrainian and foreign scientists studied various aspects of regulating the water regime on drained lands [3][4][5][6]. Regulation of the water regime on drained lands is based on two main approaches [7][8][9][10][11].…”