Revisited Formation of Morphological Features of Gray Forest Soils of West Siberia

DOI

10.2991/agrosmart-18.2018.59How to use a DOI?

Keywords

Western Siberia, soil formation, gray forest soil, morphological attributes, soil profile, genetic horizons

Abstract

Topsoils of Western Siberia have not been studied in sufficient detail. The causes of it are a variability of soil formation rocks, specifics of relief in the territory, human activities, and inaccessibility of some territories. When moving to precise agriculture, lack of exact information on typology of soils impedes development of zoned soil treatment and fertilizing systems. The goal of the research was to analyze morphological attributes of gray forest soils formed in the forest-steppe zone of Trans-Ural. The paper gives data from multi-year research conducted by the Department of Soil Science and Agricultural Chemistry of the Northern Trans-Ural State Agrarian University collected in the south of Tyumen oblast. It has been established, that subtypes of the gray forest soils differ significantly with each other by their genetic horizons. In light-gray and gray forest soils, there is an eluvial horizon that varies in coloration and structure. Dark-gray forest soils lack this horizon. The attributes of podsolization are evident in ample silica powdering in the lower part of the humus horizon. The soil profile of the dark gray forest soil is closest to chernozems of Trans-Ural forest-steppe in their morphogenetic attributes. Variance and statistical analysis of data from 75 soil profile cuts show a significant variation in depth of the genetic horizons within each subtype of gray forest soils. It impedes classification of the regional soils. Variance in the depth of illuvial carbonate horizon against the background of podsolization and solodization of soils has a significant influence over the soil formation process by forming regional morphogenetic attributes that impede classification of the gray forest soils. When moving to the precise agriculture it is necessary to compile a detailed map of land use that will reflect such regional features of the gray forest soils as the humus horizon depth, presence of podsolization and solodization evidence, carbonate horizon depth. It will give a possibility to develop a system of extended regeneration of fertility of gray forest soils when involving them into the plowed stock of Western Siberia.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Marina Kastornova
PY  - 2018/12
DA  - 2018/12
TI  - Revisited Formation of Morphological Features of Gray Forest Soils of West Siberia
BT  - International scientific and practical conference "AgroSMART - Smart solutions for agriculture" (AgroSMART 2018)
PB  - Atlantis Press
SP  - 311
EP  - 315
SN  - 2352-5401
UR  - https://doi.org/10.2991/agrosmart-18.2018.59
DO  - 10.2991/agrosmart-18.2018.59
ID  - Kastornova2018/12
ER  -