SOIL NEOPLASMS – AS DIAGNOSTIC CRITERIA OF SOIL FORMATION PROCESSES IN THE BROWN EARTH-PODZOL LOAMY SOILS OF PRE-GORGANIAN PRE-CARPAТHIAN REGION
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2019, Vol 24, Issue 1
Abstract
Problem Statement and Purpose. The soils of the Pre-Gorganian Pre-Carpathian Region with the eluvially illiual type of the profile were formed as a result of a complex combination of various elemental soil processes. The ambiguity of the interpretation of the diagnostic criteria of soil-forming processes leads to divergences in the interpretation of their genesis and classification. The aim of the study is to establish the genesis of profile-differentiated soils of Pre-Carpathian according to morphological peculiarities of soil formation (form, size, internal structure) and the gross chemical composition of Fe-Mn ortsteins, nodules and cutans. Data & Methods. The study of morphological features of genetic horizons and soil neoplasms (color, size, shape, internal structure) was conducted within the key areas of “Loeva” (sixth terrace) and “Kamin” (seventh terrace). It was determined the gross chemical composition and calculated the diagnostic parameters in the selected soil samples – neoplasms. Results. Most researchers use the results of the gross chemical composition of soils, silt fraction and indicators calculated on their basis for diagnostics of soil-forming processes. It is proposed to use the morphological features of Fe-Mn nodules, ortsteins and cutans, as well as the results of their gross chemical composition for the diagnosis of pedogenesis of profile-differentiated soils of Pre-Carpathian.The predominance within the limits of the NON horizon of sod-podzolic soils skeletans, and within the limits of the ileuvial and transitional to the ground breed – sesquans, testifies about the formation of these soils under the influence of the process of podzolization (acid hydrolysis). Ortsteins of an oval and tubular form with the clear external contours and a concentric internal structure of the accumulation of Ferum and Mangan indicate their exint genesis and formation under the action of clayeluvial process. In brown earth-podzol soils, sesquans are not diagnosed, and in the non-horizon the amount of skeletan is minimal, which indicates the minimum intensity of the acid hydrolysis process. Within the limits of the illuvial horizon are formed argillanes (clay cutans) around the inclusions of boulders and pebbles, which diagnose the processes of lessivage and internal soil argillization. The presence of brown earth-podzolic soils nodules with the diffuse contours and fuzzy form, black color, uniform saturation of Fe and Mn oxides in the whole cross section along the ileuvial horizon testifies about their insit genesis and domination in internal soil argillization processes of the illuvial horizon. It is expedient to use modern laboratory methods in the study of soil neoplasms and to make a correlation of the current elementary soil processes parameters in profile-differentiated soils of Pre-Carpathian region with the proposed ones.
Authors and Affiliations
Z. P. Pankiv, S. Z. Malik
Keywords
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- EP ID EP662468
- DOI 10.18524/2303-9914.2019.1(34).169715
- Views 72
- Downloads 0
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