. MORPHOLOGICAL CHARACTERISTICS SOILS OF THE BELIGATIVE STRUCTURES OF THE KAMIANETS-PODILSKYI KAMIANETS-PODILSKYI STATE HISTORICAL RESERVE MUSEUM
Authors: Kyrylchuk Andrii , Malik Roman , Doroshkevich Sergiy 
Published: December 2021

The article presents micromorphological descriptions of soil profiles of key areas of the research territory. The results of micromorphological analysis and synthesis of selected soil samples are illustrated. For the first time the process-and-genetic features of urborendzins of beligerative structures were studied through the evaluation of their micromorphological structure.

Urborendzins of the beligerative landscape complex of the Kamianets-Podilskyi State Historical Preserve Museum are intrazonal biolithogenic polygenetic soils with complex phylogeny exposed to a long-term anthropogenic influence. It is important to establish their genesis, which is accompanied by a number of obstacles caused by the significant amplitude of the soil profile, morphological features, physical-and-chemical features and the presence of buried horizons in such soils. To solve the problem of age and ontogenesis staging of urborendzins, along with comparative-and-geographical, we use a complex paleopedological method with active application of micromorphological analysis, which allows to establish process-and-genetic features of soils by diagnosing elementary soil processes according to sustainable features at the micro level of solid phase formation.

Micromorphological structure evaluation makes it possible to consider soil as a system at the microscopic level and observe the natural flow of soil-forming processes in their interaction and ratio at all morphological levels - from microscopically small volumes of soil mass to soil profile in general. Consequently, micromorphological analysis is a unique one and possesses significant advantages over other methods of physical geography.

Urborendzins of the object under study have a complex problematic genesis and the use of micromorphological analysis and micromorphological synthesis is acceptable to solve these problems. The evaluation of the micromorphological structure of these soils was carried out for the first time, their micromorphological features were not previously determined as well as the genesis in general. Our micromorphological analysis allowed us to establish the process-and-diagnostic features of the studied soils and shows that in comparison with the background soil, the deposits of the «Day Tower» are more carbonated. Under the conditions of the washing regime, fragments of limestone deposits provide constant involvement of new weathered carbonated material in soil formation processes, which promotes saturation of soil solutions with calcium cations and, accordingly, formation of more stable microaggregation of soil mass and reduction of mobility of silty particles downwards the profile, fixed through by micromorphological researches in the form of the presence of high-order microaggregates. Comparing the background soil with the sediments of the «Day Tower», it can be stated that the agrorendzin typical, in contrast to urborendzin, leached from carbonates, is characterized by the practical absence of microorshteins, humic substances are mainly in a dispersed state and signs of movement of organo-clay substances downwards the profile can be traced much more clearly. This indicates that the background agrorendzin is formed under conditions of active biogenic and accumulative processes, carbonate leaching and illimerization.

Key words: micromorphological analysis, synthesis, soil, beligerative complex.