Carbon accumulation in soils of forest and bog ecosystems of southern Valdai in the Holocene

Minayeva, Tatiana; Trofimov, S. Ya.; Chichagova, O. A.; Dorofeyeva, E. I.; Sirin, Andrey; Glushkov, I. V.; Mikhailov, N. D.; Kromer, Bernd

doi:10.1134/s1062359008050142

Cited by 12 publications

(10 citation statements)

References 4 publications

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“…Previous research conducted in the CFSNBR (Minayeva et al 2008(Minayeva et al ,Šantrůčková et al 2010 showed that carbon stocks in mineral soils are many times smaller than in waterlogged shallow-peat soils and an order of magnitude smaller than in peat bog soils. The carbon stored in the sward podzolic soils in mixed spruce forests is not higher than 2-4 kg C m −2 .…”

Section: General Discussion and Conclusionmentioning

confidence: 96%

Partitioning of ecosystem respiration in a paludified shallow-peat spruce forest in the southern taiga of European Russia

Kurbatova

Tatarinov

Молчанов

et al. 2013

Environ. Res. Lett.

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Soil, tree stems, and ecosystem carbon dioxide fluxes were measured by chambers and eddy covariance methods in a paludified shallow-peat spruce forest in the southern taiga of European Russia (Tver region, 56 • N 33 • E) during the growing seasons of 2002-2012. The site was established in 1998 as part of the EUROSIBERIAN CARBONFLUX project, an international field experiment examining atmosphere-biosphere interaction in Siberia and European Russia. In all years the observed annual cumulative net ecosystem flux was positive (the forest was a source of carbon to the atmosphere). Soil and tree stem respiration was a significant part of the total ecosystem respiration (ER) in this paludified shallow-peat spruce forest. On average, 49% of the ER came from soil respiration. We found that the soil fluxes exhibited high seasonal variability, ranging from 0.7 to 10 µmol m −2 s −1 . Generally, the soil respiration depended on the soil temperature and ground water level. In drought conditions, the soil respiration was low and did not depend on temperature. The stem respiration of spruces grew intensively in May, had permanently high values from June to the end of September, and in October it dramatically decreased. The tree stem respiration in midsummer was about 3-5 µmol m −2 s −1 for dominant trees and about 1-2 µmol m −2 s −1 for subdominant trees. The respiration of living tree stems was about 10-20% of the ER.

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Section: General Discussion and Conclusionmentioning

confidence: 96%

Partitioning of ecosystem respiration in a paludified shallow-peat spruce forest in the southern taiga of European Russia

Kurbatova

Tatarinov

Молчанов

et al. 2013

Environ. Res. Lett.

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“…The studies show that the amount of carbon stored in mineral soils is several times lower than in waterlogged soils, and it is an order of magnitude lower than in the mires (Minaeva et al, 2008). Mire and wetland habitats have much larger carbon reserves due to the presence of peat deposits.…”

Section: Discussionmentioning

confidence: 97%

Effects of pyrogenic factor on wetlands of Petrovskaya Pad' (Jewish Autonomous Region, Russia)

Kopoteva¹,

Kuptsova²

2019

Nat. Conserv. Res.

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In recent decades, a severe wildfire situation threatening the territory along the periphery of the Bastak State Nature Reserve (Russia) has developed in the Petrovskaya Pad'. In this paper, we assessed the current state of the vegetation cover and post-pyrogenic changes in the Petrovskaya Pad', based on the geobotanical survey during a joint expedition in 2009. At present, this area of the Middle Amur Lowland is a vivid example of wetland degradation due to the repeated wildfire impact initiated by the local people and agricultural workers in the Amur region. The widespread xerophytisation process of fen vegetation, due to a sharp drop in the groundwater level, was observed. A comparison with the data of previous studies led to the conclusions that now mesotrophic shrub-Sphagnum bogs, described earlier, have completely disappeared from the vegetation cover of the territory. We suggest that their degradation is caused by the continuously acting pyrogenic factor. In addition, the paper for the first time provides data on the dynamics of the acrotelm structure in the post-pyrogenic period, which were obtained during a nine-year monitoring. The profound changes in the acrotelm structure are responsible for the restoration of mesotrophic bogs taking decades.

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“…In general, the bog-regulated entropy production was significantly weaker than that of the forests, both during the growing season and in winter. The particular thermodynamic behavior of bogs may be connected with the fact that bogs, unlike forests, are inherently non-equilibrium systems, persistently thickening and fixing carbon from the atmosphere at long time-scales [49,50]. Note that the albedo and surface temperature typically increase along serial stages, such as the "lake-overgrown lake-bog"; therefore, the statement of Lin et al [20] regarding the cooling and darkening of ecosystems during maturation and succession is not valid for bogs.…”

Section: Discussionmentioning

confidence: 99%

Radiative Entropy Production along the Paludification Gradient in the Southern Taiga

Kuricheva

Mamkin

Sandlersky

et al. 2017

Entropy

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Entropy production (σ) is a measure of ecosystem and landscape stability in a changing environment. We calculated the σ in the radiation balance for a well-drained spruce forest, a paludified spruce forest, and a bog in the southern taiga of the European part of Russia using long-term meteorological data. Though radiative σ depends both on surface temperature and absorbed radiation, the radiation effect in boreal ecosystems is much more important than the temperature effect. The dynamic of the incoming solar radiation was the main driver of the diurnal, seasonal, and intra-annual courses of σ for all ecosystems; the difference in ecosystem albedo was the second most important factor, responsible for seven-eighths of the difference in σ between the bog and forest in a warm period. Despite the higher productivity and the complex structure of the well-drained forest, the dynamics and sums of σ in two forests were very similar. Summer droughts had no influence on the albedo and σ efficiency of forests, demonstrating high self-regulation of the taiga forest ecosystems. On the contrary, a decreasing water supply significantly elevated the albedo and lowered the σ in bog. Bogs, being non-steady ecosystems, demonstrate unique thermodynamic behavior, which is fluctuant and strongly dependent on the moisture supply. Paludification of territories may result in increasing instability of the energy balance and entropy production in the landscape of the southern taiga.

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Carbon accumulation in soils of forest and bog ecosystems of southern Valdai in the Holocene

Cited by 12 publications

References 4 publications

Partitioning of ecosystem respiration in a paludified shallow-peat spruce forest in the southern taiga of European Russia

Partitioning of ecosystem respiration in a paludified shallow-peat spruce forest in the southern taiga of European Russia

Effects of pyrogenic factor on wetlands of Petrovskaya Pad' (Jewish Autonomous Region, Russia)

Radiative Entropy Production along the Paludification Gradient in the Southern Taiga

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