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Wetlands of the Volhynian Polissia (Western Ukraine) : classification, natural conditions of distribution and spatial difference

Solovey Tatiana

Geological Quarterly

2019

Vol. 63, No. 1

139--149

The post-glacial areas are characterized by favorable conditions for the formation of wetlands as a result of the widespread occurrence of depressions without outflow - center for the development of wetlands. The studies of morphogenetic conditions of the wetland development in Volhynian Polissia within the territory of Ukraine and the formation of their water regime reveal several features of their distribution and typological variety. The location of wetlands were characterized in reference to the shape of base/subsoil and its lithology. The typical structure of post-lacustrine, paludificational, riverside and spring peatlands of the Volhynian Polissia were shown and their development were also discussed. The wetland evolution under the influence of the postglacial landscape degradation leads to disappearance of the depression wetlands in glacial forms, increase of the peat bog trophicity and the level of peat dissolution. The supply conditions and characteristics of water regime are determined for separate peatlands. According to the origin and water flow/supply four types of wetland were extracted: ombrogenic, topogenic, soligenic and fluviogenic. It was found that the reasons of the high marshes areas (21%) in Volhynian Polissia are the geological and geomorphological conditions retaining/stopping the runoff and also local groundwater circulation system.

Uwarunkowania środowiskowe rozwoju torfowisk na Polesiu Wołyńskim w obrębie Ukrainy

Solovey T.

Przegląd Geologiczny

2015

Vol. 63, nr 10/2

1063--1067

An assessment of morphogenetic conditions and forming the hydrological regime of wetlands of theVolyn Polesie Ukraine were carried. Ukraine is the most swampy/wettest region of the country. At first some bogs within an area exceeding 1 ha were selected. Then the Author determined the importance of terrain form/shape and water supply conditions in the formation of the hydrological regime. The location of wetlands were characterized in reference to the shape of base/subsoil and its lithology. The typical structure of postlakes, paludification, riverine and spring-fed peatlands of Volyn Polesie were shown and their development were also discussed. According to the origin and water flow/supply four types of wetland were extracted: ombrogenous, topogenous, soligenous and fluviogenous. On the basis of water balance the role/part of groundwater supply of wetlands (ombrogenous, topogenous, soligenous and fluviogenous) was determined. It was found that the reasons of the high swampy areas (21%) in Volyn Polesie are the geological and geomorphological conditions retaining/stopping the runoff and also local groundwater circulation system.