Experimental modeling of the influence of the rise in average summer temperatures on carbon circulation in tundra ecosystems

A sealed vegetation chamber was designed and constructed for physical simulation of climate conditions in the Subarctic zone during the spring–summer time. The small laboratory tundra-simulating ecosystem (TSE) was created for comparative evaluation of the rates of soil respiration and of the total...

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Bibliographic Details
Published in:Doklady earth sciences 2016-11, Vol.471 (1), p.1168-1170
Main Authors: Barkhatov, Yu. V., Tikhomirov, A. A., Ushakova, S. A., Shikhov, V. N., Bartsev, S. I., Degermendzhi, A. G.
Format: Article
Language:English
Subjects:
Carbon cycle
Carbon dioxide
Climatic conditions
Earth and Environmental Science
Earth Sciences
Ecosystems
Geochemistry
Subarctic zone
Summer
Taiga & tundra
Temperature
Terrestrial ecosystems
Tundra
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Summary:A sealed vegetation chamber was designed and constructed for physical simulation of climate conditions in the Subarctic zone during the spring–summer time. The small laboratory tundra-simulating ecosystem (TSE) was created for comparative evaluation of the rates of soil respiration and of the total balance of carbon fluxes in tundra ecosystems. The test experiment was performed to study the TSE response to a temperature rise in air and soil by 2°C in terms of the intensity of the СО 2 flux. It was shown that this increase in temperature would cause a pronounced shift in the balance of СО 2 production and utilization in the ecosystem from near-zero values to a stable generation of 24 μmol/h of CO 2 per 1 kg of dry biomass.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X16110106