Fraction-group humus composition of cryogenic surface-gley and hydromorphic soils of the Bol’shezemel’skaya tundra

  • Vasiliy Beznosikov Institute of Biology of the Komi Science Centre of the Ural Division RAS, 28, ul. Kommunisticheskaya, Syktyvkar, 167982, Russian Federation https://orcid.org/0000-0002-7161-2720
  • Evgeniy Lodygin Institute of Biology of the Komi Science Centre of the Ural Division RAS, 28, ul. Kommunisticheskaya, Syktyvkar, 167982, Russian Federation https://orcid.org/0000-0002-0675-524X

Abstract

The article aims to study the fraction-group humus composition in cryogenic surface-gley and hydromorphic soils of the Bol’shezemel’skaya tundra. The specifics of the studied soils formed on loam are proved to be of high carbon content in coarse-humus (mor) organic-accumulative horizons and its content is inclined to a sharp decrease with depth. Humus composition is humuc-fulvic in organic horizons and fulvic in mineral horizons. Cryo-surface-gley soils are highly soluble and characterized by the low-average humification degree of organic matter. The humus profile of cryo-hydromorphic soils is formed by a complex of processes such as cryogenic mass exchange, frost retinization, and cryogenic denaturation and coagulation of disperse humus systems.

Keywords:

tundra soils, humus, fraction-group composition, cryogenesis

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Published
2012-03-05
How to Cite
Beznosikov, V., & Lodygin, E. (2012). Fraction-group humus composition of cryogenic surface-gley and hydromorphic soils of the Bol’shezemel’skaya tundra. Biological Communications, (1), 107–120. Retrieved from https://biocomm.spbu.ru/article/view/4808
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