Stepan POZNYAK, Vladyslav HARBAR.

RENDZIC LEPTOSOLS OF PODILSKI TOVTRY.

Studied geography, physical and physicochemical properties rendzinas of Podilski Tovtry. Deals with differences in ontogeny rendzinas caused by lithological, geomorphological, climatic conditions and human activities. The role of lithological factor in the formation of spatial heterogeneity and change components rendzinas of Podilski Tovtry. It is established that of the tops Tovtry free from deposits formed loess a similar rendzinas typical and weakly leaced on the slopes where limestone rocks gradually overlapping loess a similaring loam formed a “belt” pararendzynas, which are characterized by a grayish-brown color (10YR 6/4–7/2), significantly lower rates of humus in the upper horizon (2-3%) and heavy loam size distribution. The characteristic of differences in physical and physico-chemical properties of the soils that are natural and man-excited state. It was established as a result of prolonged agricultural use in the genetic profiles rendzinas trend of active dissolution and leaching of solid carbonaceous particles rapidly crumbling structure, sealed genetic horizons, reduced total porosity and aeration porosity. This contributes to loose the original compilations rendzinas. It is confirmed that high rates of humus due to excess CaCO3 content, which accelerates the decomposition of fresh plant residues, increases humification processes, but contributes to the consolidation of humic substances in the soil in a sustainable manner that prevents their further decomposition. Investigated the profile distribution of carbonates and leaching processes under different types of vegetation. Deals with the level and trends of degradation processes of physical and chemical properties rendzinas due to agricultural use.

Keywords: rendzinas, pararendzinas, the parent rock, leaching, carbonate, Podilski Tovtry.

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