Biogeochemistry of holocene peatlands in the baraba forest-steppe (southern West Siberia)

Леонова, Г.А.; Maltsev, A.E.; Preis, Yu. I.; Miroshnichenko, L. V.

doi:10.1016/j.apgeochem.2020.104811

Cited by 4 publications

(4 citation statements)

References 22 publications

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“…It should be noted that the extremely high concentrations of zinc in the pore water of the D horizon are up to 10 ppm (10 times higher than the MAC). High zinc contamination of oligotrophic bogs of the Baraba forest steppe was also noted earlier [13,44]. Thus, the destruction of a number of minerals and the diagenesis of peaty vegetation residues leads to an increase in the concentrations of Al, Fe and P in the slightly acidic (pH 4-4.5) pore water of the upper part (horizon A).…”

Section: Chemical Composition Of Bog and Pore Watersmentioning

confidence: 70%

“…Surprisingly, sulfur from horizon B (134-145) to G (178-198 cm) prevails in the sulfide-bound form. Previously, in [13] (p. 3), it was claimed that "no sulfur has been detected in the Ubinskoye bog peat till a depth of 187 cm; below this depth, S increases from 0.88 to 3.65% in peat and decreases to 1.0-1.4% in the organic-mineral and mineral layers".…”

Section: Element Species In Peat and Underlying Sedimentsmentioning

confidence: 99%

“…Trace element concentration data in the peat sediment profile can be used to assess environmental pollution as well as to track sources of substance entry [5][6][7][8][9][10]. Furthermore, knowledge of element speciation and physical-chemical processes existing at the water-solid interface is very important for predicting the accumulation of elements at geochemical barriers and shaping the pattern of diagenetic changes in sediments [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, comprehensive geochemical studies of complete Holocene peatland sections in the West Siberian have been undertaken by the authors of [11,13] in the forest-steppe zone and by the authors of [1] in the Southern Taiga Subzone. Active research in this area is carried out for the swamps of the forest and forest-steppe zones of Western Siberia, such as, for example, a series of works on the geochemistry of peat deposits [7,12,14,[22][23][24][25][26][27][28][29][30] and the geochemistry of bog waters [5,[15][16][17][18][31][32][33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

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Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling

Shvartseva,

Gaskova,

Yurtaev

et al. 2024

Water

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This work investigates how peatlands can be used as archives of past environmental conditions to record changes in atmospheric deposition of some (especially lithophile and chalcophile) elements and any water–rock–organic matter interactions followed by the sedimentation or leaching of others. We have provided a detailed description of both the distribution of various groups of elements and their chemical species in the entire depth of peat deposits. The study analyzes the features of the peat sediment formation and element distribution in the 0–310 cm depth core sample of peat deposits of the Ubinskoye peat bog located in the forest-steppe zone of Western Siberia. The study reveals a profound diagenetic transformation of water and peat chemical composition. Element speciation investigated using the modified Tessier sequential extraction procedure showed the vertical transition of an oxidative geochemical environment to a reducing one with the formation of geochemical barriers for variably valent elements. Computer modeling calculations of saturation indices of pore solutions in relation to a number of minerals allowed us to estimate the degree of equilibrium of the system and the direction of its transformation. Early diagenetic processes lead to the deposition of authigenic minerals. Therefore, barite forms on the redox line, while pyrite is found in the reducing environment. With depth, the content of Ca, Mg and Sr increases, which leads to the formation of authigenic carbonates.

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Section: Chemical Composition Of Bog and Pore Watersmentioning

confidence: 70%

Section: Element Species In Peat and Underlying Sedimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling

Shvartseva,

Gaskova,

Yurtaev

et al. 2024

Water

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Preface – Special issue applied geochemistry: Innovative methods for characterizing evolution and budgets in water/rock systems: A tribute to Tom Bullen and Stepan Shvartsev

Millot

Shouakar-Stash

Zuddas

et al. 2021

Applied Geochemistry

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Holocene vegetation dynamics of Horqin Sandy Land in northern China inferred from the phytolith record of a sand-paleosol section

Yang

Gao

Jie

et al. 2023

Palaeogeography, Palaeoclimatology, Palaeoecology

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Biogeochemistry of holocene peatlands in the baraba forest-steppe (southern West Siberia)

Cited by 4 publications

References 22 publications

Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling

Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling

Preface – Special issue applied geochemistry: Innovative methods for characterizing evolution and budgets in water/rock systems: A tribute to Tom Bullen and Stepan Shvartsev

Holocene vegetation dynamics of Horqin Sandy Land in northern China inferred from the phytolith record of a sand-paleosol section

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