THE ROLE OF GRAY FOREST SOILS IN FORMATION OF SOIL COMBINATIONS OF PASMOVE POBUZHIA
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2015, Vol 20, Issue 3
Abstract
Purpose. Pasmove Pobuzhia is a region of intensive agriculture, that’s why individual soil and whole soil cover suffer from anthropogenic impact. The purpose of research is to study soil combinations, indicators of complexity and heterogeneity of soil cover. Particular attention is paid to the role of gray forest soils in formation of these indicators as they often form the background of combinations and are extensively used in agriculture. Data&Methods. Comparative-geography, field, analytical, cartometric, statistical methods were used in investigation. Cartographic basis is the soil map of scale 1: 10 000. Indicators of complexity, contrast and heterogeneity of soil cover were calculated according to the methods proposed by V. Friedland, Y. Hodelman. Results Erosive-delluvial spectrum of structure of the soil cover, represented by combinations and variations of gray forest with other automorphic and semіautomorphic types of soils dominates within the investigated area. Gray forest soils are the background and form, mostly small and medium less fragmented basic areas. As microcatena of washout and aggradated soils have much smaller area and greater fragmentation, and the number of areas of other types of soil is small, gray forest soils provide identity to the great block and less fragmented combinations. Within the types these soils differ with the degree of erodibility. Non washout soils have large areas and less fragmentation of it. With increasing of the degree of washout area ranges decrease, and the stage of fragmentation increases. So that can be argued that the neglect of anti-erosion measures and further development of water erosion, will promote increase of complexity of the soil structure. The contrast of soil combinations of Pasmove Pobuzhia is caused by genetic heterogeneity, different granulometric composition, level of washout and hydromorphity of soils. Soil combinations are mostly semicontrasted. Gray forest soils often border on the sameиsoil type, so the contrast is shown by the degree of erosion destruction of soil.
Authors and Affiliations
V. G. Haskevych, O. V. Haskevych Agrarian National University of Lviv
Keywords
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