Geochemical Features of Peat Deposits at Oligotrophic Bogs in the Southern Taiga Subzone of West Siberia

Geochemical Features of Peat Deposits at Oligotrophic Bogs in the Southern Taiga Subzone of West Siberia

— The paper presents original authors’ data on the geochemical aspects and peat deposits and conditions of their accumulation at the three oligotrophic bogs in the south taiga subzone of West Siberia. These data were acquired with regard to a complex of factors impacting the development of peat depo...

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Bibliographic Details
Published in:Geochemistry international Vol. 59; no. 6; pp. 618 - 631
Main Authors: Veretennikova, E. E., Kuryina, I. V., Dyukarev, E. A., Golovatskaya, E. A., Smirnov, S. V.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-06-2021
Springer
Springer Nature B.V
Subjects:
Anthropogenic factors
Bogs
Calcium
Carbon/nitrogen ratio
Chemical elements
Chromium
Composition
Copper
Data acquisition
Deposits
Distribution
Earth and Environmental Science
Earth Sciences
Elements
Geochemistry
Geomorphology
Groundwater
Human influences
Iron
Lead
Manganese
Nickel
Oxidoreductions
Peat
Peat-bogs
Peatlands
Physicochemical processes
Physicochemical properties
Plant roots
Rock
Rocks
Taiga
Thickness
Water levels
Siberia
Russia
chemical elements
water–mineral nutrition
ash content
peat deposit
underlying rocks
West Siberia
organic matter decomposition (C/N ratio)
oligotrophic bog
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Summary:— The paper presents original authors’ data on the geochemical aspects and peat deposits and conditions of their accumulation at the three oligotrophic bogs in the south taiga subzone of West Siberia. These data were acquired with regard to a complex of factors impacting the development of peat deposits: the geomorphological setting in the landscape, the lithochemical composition of the underlying rocks, the physicochemical properties of the peat, and the contents of chemical elements and their distribution in the peat profiles. The impact of the geomorphological factor is reflected in the different ratios of peat layer thicknesses in the peat deposits of different type. The composition of the underlying rocks affected the concentration of elements and their distribution within the peat profile. The main element associations in the peat deposits of the bogs are identified using the method of principal components. The distribution of the elements in the peat deposits is shown to be differentially influenced by a number of factors: endogenous supply of elements from the underlying rocks and groundwater (Ca, Fe, Ti, Ni, Cu, Co, Cr, Ba, Cd, and Sr), the activity of redox processes (Mn, Pb, and Fe), redox-independent processes of the dissolution and mobilization of elements by plant roots (Ca, Cu, and Fe), the rate of peat decomposition (Mn, Pb, and the C/N ratio), the water level in the peatlands (C/N ratio), and atmospheric supply of anthropogenic compounds as a result of human activities (Pb).
ISSN:0016-7029
1556-1968
DOI:10.1134/S0016702921050098