AGGRENIC CHANGES OF THE STRUCTURAL STATE OF GREYIC LUVIC PHAEOZEMS OF THE HOLOHORY-KREMENETS RANGE
Journal Title: Вісник Львівського університету. Серія географічна - Year 2017, Vol 51, Issue
Abstract
The article describes the structural and aggregate state of Greyic Luvic Phaeozems of the Holohory-Kremenets Range. Comparison of structural and water resistance indicators for soils of different nature of use has been performed. In particular, the soils under forest vegetation, arable land and grassland were taken into account. All soils differ in the degree of anthropogenic load, primarily mechanical pressure, which is reflected in the change in the physical state of soils. According to the results of the analysis of the structural and aggregate soil composition, the indicators of water resistance of the macrostructure of the arable layer of soils have been determined. Soils under forest vegetation and grassland have been established to be characterized by a close distribution of structural aggregates by fractions, in particular, the predominance of lumpy elements (62,27–76,80 % of air-dry aggregates). In the arable horizon of cultivated soils, the share of aggregates with the size of 10–0,25 mm (53,96 %) is increasing. Water-resistant aggregates of soils under forest and grassland are usually 10–0,25 mm in size (59,9–68,14 %), whereas in arable soils they make less than 0,25 mm. At the same time, arable Greyic Luvic Phaeozems are characterized by a higher coefficient of structurality in the arable and subsurface layer, while the water resistance index of the soil structure is lower compared with analogues under forest and herbaceous vegetation.
Authors and Affiliations
Oksana Haskevych
Keywords
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