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2020, № 4 (42) |
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ECOLOGY
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Ivanisova N.V., Kurinskaya L.V., Kolesnikov S.I. |
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Profile change of granulometric composition of soils in the landscape anthropogenization |
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In human-induced landscape transformation, soils are the most informative component of the degree of transformation. Granulometric composition determines many chemical, physical-chemical and biological properties of soils, water-air regime. Vegetation reduces the rate of percentage change of certain fractions, which in turn affects the stability of soils in anthropogenic transformation. The soils studied are represented by black plain heavy-carbon, well-structured in profile. Its mechanical elements are coagulated into strong aggregates, the majority of which in size refers to agronomically valuable fractions of 10 - 0.25 mm, which make more than 60%. In the process of anthropogenic influence on soils, there is a prevalence of fractions of less than 0.25 mm in the upper horizons. There is a trend of transition from rocky structure to soil fine disease in the territory of roadside and agrolandshafts. Profile distribution of soil aggregates along horizons in landscapes without plantations takes place evenly with small prevalence of fractions with size from 2 to 3 mm and reduction of fraction percentage less than 0.25 mm. The presence of wood-shrub vegetation smooths the process of destruction of fractions, and according to the soil profile, agronomically valuable fractions of size from 10 to 0.25 mm prevail
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