EFFECT OF AMPLIFICATION OF CO2 EMISSION IN DECAY AREAS IN VALDAY FORESTS
https://doi.org/10.15356/0373-2444-2017-2-60-68
Abstract
During the 2-year monitoring of CO2 soil emission in southern taiga mature spruce forests, the effect of local (within 1–2 m2), but significant (3-fold above background levels) and long-term (over 2 years) enhanced CO2 emission in the root zone of standing spruce dead wood was found. Apparently, the above-mentioned effect is described in the literature for the first time. The studied spruce trees died due to the continuing climate warming and the subsequent attacks of saprotrophic root fungi and species of xylophagous beetles. As the most probable cause of the observed effect, the rise of respiration of pathogenic fungal flora in the rhizosphere zone of the dead standing trees is discussed. The found effect is not only important to account for this additional significant source of carbon dioxide to the atmosphere, which is especially important, when considering the influence of climate-driven windfalls or biogenic destruction of spruce forests. It is also applicable for express-diagnostics of the spruce state at the first stage of its destruction after mass pest attack, when obvious visible signs of tree decay are absent.
About the Authors
D. V. Karelin
Moscow State University, Centre for Problems of Ecology and Productivity of Forests, Russian Academy of Science, Institute of Geography, Russian Academy of Sciences
Russian Federation
Russian Federation
A. V. Pochikalov
Moscow State University, Centre for Problems of Ecology and Productivity of Forests, Russian Academy of Science
Russian Federation
Russian Federation
D. G. Zamolodchikov
Moscow State University, Centre for Problems of Ecology and Productivity of Forests, Russian Academy of Science
Russian Federation
Russian Federation
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For citations:
Karelin D.V., Pochikalov A.V., Zamolodchikov D.G. EFFECT OF AMPLIFICATION OF CO2 EMISSION IN DECAY AREAS IN VALDAY FORESTS. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2017;(2):60-68. (In Russ.) https://doi.org/10.15356/0373-2444-2017-2-60-68
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