THE ECOLOGY AND PROPERTIES OF THE SOILS IN THE SAMAKHA STEPPE OF THE SOUTH-EASTERN ALTAI

DOI

10.24411/1728-323X-2018-16110

Section

Physical geography and biogeography, soil geography and landscape geochemistry

Title

THE ECOLOGY AND PROPERTIES OF THE SOILS IN THE SAMAKHA STEPPE OF THE SOUTH-EASTERN ALTAI

Сontributors
  1. S. N. Balykin, Ph. D. (Biology), Senior Researcher, This email address is being protected from spambots. You need JavaScript enabled to view it.,
  2. A. V. Puzanov, Ph. D. (Biology), Dr. Habil., Professor, Director, This email address is being protected from spambots. You need JavaScript enabled to view it.,
  3. T. A. Rozhdestvenskaya, Ph. D. (Biology), Senior Researcher, This email address is being protected from spambots. You need JavaScript enabled to view it.,
  4. S. V. Baboshkina, Ph. D. (Biology), Senior Researcher, This email address is being protected from spambots. You need JavaScript enabled to view it.,
  5. D.N. Balykin, Ph. D. (Agriculture), Researcher, This email address is being protected from spambots. You need JavaScript enabled to view it.,
  6. I. V. Gorbachev, Researcher, This email address is being protected from spambots. You need JavaScript enabled to view it.. Institute of Water and Environmental Problems, Siberian Branch of the Russian Academy of Sciences (IWEP SB RAS), Barnaul, Russia
Abstract

The paper deals with the major factors of soil formation in the Samakha intermountain basin. The morphological features and physical and chemical properties of the soils located on sand — pebble carbonate sediments under steppe vegetation are investigated. The uneven distribution of precipitation caused by the microrelief peculiarities of the basin and anthropogenic factors are responsible for heterogeneity of carbonate leaching and accumulating in the soil cover. The soils under study have chestnut color of various shades of humus horizons, fragile lumpy or powdery structure, and abundance of inclusions growing with depth. A high content of humus substances in the surface horizons, sharply decreasing with depth, especially in irrigated areas, was noted. Soils are not saline, mainly with neutral reaction of soil solution, which becomes alkaline in the lower part of the profile. The taxonomic issues are discussed in the framework of the regional soil classification and the soil classification of Russia of 2008. According to the latter, we attribute the mentioned profiles to the trunk of postlithogenic, the department of paleo-metamorphic, the type of cryoarid soils. Taking into account the leading role of redistribution, accumulation, migration and transformation of carbonates in cryoarid soils and based on carbonates presence and occurrence depth, at a subtype level these are leached and typical soils.

Keywords

the Samakha steppe, cryoarid soils, soil formation factors, morphology and physical-chemical properties, classification issues.

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