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Fire as a Major Factor in Dynamics of Tree-Growth and Stable δ13C and δ18O Variations in Larch in the Permafrost Zone

Описание

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.3390/f13050725

Ключевые слова: active layer thickness, climatic response, siberia, stable isotopes, tree-ring width, vegetation cover, wildfire impact

Аннотация: Wildfires are one of the most important environmental factors controlling forest ecosystem physiology and the carbon balance in the permafrost zone of North Siberia. We investigated tree-ring width (TRW) and stable isotope chronologies in tree-ring cellulose (δ13CCell, δ18OCell) of Larix Gmelinii (Rupr.) Rupr. from a wet (WS) and aПоказать полностьюdry (DS) site. These sites are characterized by different fire histories (fire in 1852 at the wet and 1896 at the dry sites, respectively). TRW and δ18OCell are identified to be the most sensitive parameters in the changing tree growth conditions after fire. The differences in the soil seasonal thermal regime of sites after fires are shown in the relationship between the studied parameters. The δ13CCell values in tree rings from the two sites are positively correlated independently of the fire impact. This fact indicates that δ13CCell chronologies might be more adequate for climatic reconstruction in the region due to the climate signal consistency. Relationships of δ18OCell values between the two sites are still significantly positive 60 years after the fire impact. Dendroclimatic analysis indicates significant changes in tree-ring growth and isotopic ratio responses to climate due to the increased demand of water for trees during the post-fire period (deeper seasonal subsidence of permafrost). © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

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Издание

Журнал: Forests

Выпуск журнала: Vol. 13, Is. 5

Номера страниц: 725

ISSN журнала: 19994907

Издатель: MDPI

Персоны

  • Knorre A.A. (Science Department, National Park “Krasnoyarsk Stolby”, Krasnoyarsk, 660006, Russian Federation)
  • Siegwolf R.T.W. (Ecosystem Ecology, Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland)
  • Kirdyanov A.V. (Institute of Ecology and Geography, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation; V.N. Sukachev Institute of Forest SB RAS, The Separate Department of Federal Research Centre KSC SB RAS, Krasnoyarsk, 660036, Russian Federation)
  • Saurer M. (Ecosystem Ecology, Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland)
  • Churakova O.V. (Institute of Ecology and Geography, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation; Ecosystem Ecology, Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland)
  • Prokushkin A.S. (Institute of Ecology and Geography, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation; V.N. Sukachev Institute of Forest SB RAS, The Separate Department of Federal Research Centre KSC SB RAS, Krasnoyarsk, 660036, Russian Federation)

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