Physical, chemical and biochemical properties of Western Siberia Sphagnum and Carex peat soils

Szajdak, Lech Wojciech; Шайдак, Л.; Лапшина, Е. Д.; Gaca, Wioletta; Гака, В; Styła, K.; Meysner, Teresa; Мейснер, Т; Szczepański, Marek; Шчепански, М; Zarov, Evgeny A.

doi:10.17816/edgcc7213-25

Cited by 11 publications

(10 citation statements)

References 30 publications

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“…The field station is a part of the International Network for Terrestrial Research and Monitoring in the Arctic (INTERACT, eu-interact.org) and is actively used by Russian and foreign scientists for studies of the functioning of mire ecosystems. Over the past years, the Mukhrino bog was the main object of numerous experimental study of GHG fluxes (Glagolev et al 2011;Alekseychik et al 2017), geochemistry and physical, chemical, and biochemical properties of peat (Stepanova and Pokrovsky 2011;Szajdak et al 2016), mire hydrology (Bleuten and Filippov 2008), and microbiology including mycology (Filippova et al 2015).…”

Section: Methodsmentioning

confidence: 99%

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Dyukarev

Godovnikov²,

Karpov³

et al. 2019

GES

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The continuous field measurements of net ecosystem exchange (NEE) of CO 2 were provided at ridge-hollow oligotrophic bog in the Middle Taiga zone of West Siberia, Russia in 2017-2018. The model of net ecosystem exchange of CO 2 was suggested to describe the influence of different environmental factors on NEE and to estimate the total carbon budget of the bog over the growing season. The model uses air and soil temperature, incoming photosynthetically active radiation (PAR) and water table depth, as the key factors influencing gross primary production (GPP) and ecosystem respiration (ER). The model coefficients were calibrated using the data collected by automated soil CO 2 flux system with two transparent long-term chambers placed at large hollow and small ridge sites. Experimental and modeling results showed that the Mukhrino bog acted over the study period as a carbon sink, with an average NEE of-87.7 gC m-2 at the hollow site and-50.2 gC m-2 at the ridge site. GPP was-344.8 and-228.5 gC m-2 whereas ER was 287.6 and 140.9 gC m-2 at ridge and hollow sites, respectively. Despite of a large difference in NEE estimates between 2017 and 2018 the growing season variability of NEE were quite similar.

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Section: Methodsmentioning

confidence: 99%

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Dyukarev

Godovnikov²,

Karpov³

et al. 2019

GES

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“…Elemental composition, atomic ratio, and internal oxidation of studied HA samples are reported in Table 2. The results showed that studied HA samples elemental composition is characteristic for HA isolated from peats (Szajdak et al 2007(Szajdak et al , 2016Huang et al 2012).…”

Section: Resultsmentioning

confidence: 99%

“…The studies by Szajdak et al (2007Szajdak et al ( , 2016 showed that, the elemental composition of peat humic acids depended on the geobotanical nature of peat.…”

Section: Resultsmentioning

confidence: 99%

Studying of the interaction between peat humic acids and metazachlor using spectroscopy methods

et al. 2018

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Purpose The analysis covered the interaction of humic acids (HA) isolated from peats with the metazachlor using spectroscopic methods. Materials and methods Five peatlands have been selected for the study in the southern and northern parts of Poland. Extraction of humic acids (HA1, HA2, HA3, HA4, and HA5) was performed using a procedure recommended by the International Humic Substances Society. Metazachlor 500 SC with metazachlor as a biologically active substance [2-chloro-N-(pyrazol-1-ylmethyl)acet-2′,6′-xylidide] has been used. HA have been assessed on the basis of their elemental composition. Spectroscopic techniques have been used to study the HA structure and their interaction with metazachlor including: UVvisible spectroscopy, dynamic light scattering, and delayed luminescence (DL) Results and discussion Based on their morphological and chemical properties, the studied peat soils can be classified as follows: (1) Eutric Murshic Sapric Histosols, (2) Eutric Sapric Histosols, (3) Eutric Hemic Histosols, (4) Eutric Fibric Histosols, and (5) Dystric Dranic Hemic Histosols according to the WRB guidelines (2015). Results showed that the largest particle size, measured by E 4/6 coefficient, was found in HA2 sample, while the smallest in HA3 sample. The addition of metazachlor to HA solutions reduced the values of E 4/6 coefficient by 33 to 72%, while the values of hydrodynamic diameter by 4 to 32%. No significant changes were found between E 4/6 after adding of metazachlor to HA solutions. The largest changes in DL intensity, excited both by blue and red light after herbicide addition, were observed in HA2 sample, which is characterized by the largest particle size, the highest oxygen content and CQ value as well as the lowest Baromatization rate^value. Conclusions The particle sizes of HA molecules measured by E 4/6 coefficient do not impact on the particle sizes of HA-herbicide systems measured by the same ratio. The delayed luminescence may become valuable, because it is simple, fast, and sensitive. Additionally, the results show minor errors comparing with chemical methods. This method may provide information about structure and nature of humic acids, as well as their photoreactivity. The using of delayed luminescence in studies of HApesticides interaction may enable us to better understand the luminescence properties of HA.

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“…The third hypothesis is based on the abundance of raised bogs in the middle taiga of WeS [6,7,8,9]. It considers horizontal transport of modern biogenic methane from watersheds peatlands through groundwater to seeps.…”

Section: Introductionmentioning

confidence: 99%

Modelling of the wetland methane budget to estimate its transport to groundwater

Glagolev

Сабреков

Kotsyurbenko

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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We are considering the methane budget for a taiga raised bog Mukhrino in order to estimate how much methane can potentially be transported from wetlands with the flow of groundwater. The production and oxidation of methane in the wetland, methane emission from the surface, accumulation in the gas phase in peat and migration with groundwater are distinguished as components of the wetland methane budget. The methane production is calculated using results of laboratory incubation experiments with peat, the oxidation is estimated using data on the vertical δ13C profile in the bog and the emission is measured using chamber method. The calculated difference between production on the one hand and emissions as well as oxidation on the other was 25.4 mg of methane per square meter of a wetland per hour or about 70% of the methane produced. This value is considered as a total methane flux that enters both gas phase of the wetland and groundwater.

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Physical, chemical and biochemical properties of Western Siberia Sphagnum and Carex peat soils

Cited by 11 publications

References 30 publications

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Studying of the interaction between peat humic acids and metazachlor using spectroscopy methods

Modelling of the wetland methane budget to estimate its transport to groundwater

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