The Influence of Temperature and Humidity on Greenhouse Gas Emission in Experiments on Imitation of the Full Vegetation Cycle of Tundra Ecosystems

Laboratory experiments were conducted in a hermetically sealed growth chamber with two soil samples obtained from the arctic tundra zone with different levels of moisture. Samples were maintained at a growing season typical of the region from which they were taken, and for the sample with a high lev...

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Bibliographic Details
Published in:Doklady earth sciences 2018-12, Vol.483 (2), p.1539-1541
Main Authors: Barkhatov, Yu. V., Ushakova, S. A., Shikhov, V. N., Evgrafova, S. Yu, Tikhomirov, A. A., Degermendzhi, A. G.
Format: Article
Language:English
Subjects:
Carbon dioxide
Carbon dioxide emissions
Earth and Environmental Science
Earth Sciences
Ecosystems
Emissions
Geochemistry
Greenhouse effect
Greenhouse gases
Growing season
Growth chambers
Heating
Humidity
Laboratory experiments
Methane emissions
Moisture
Soil
Taiga & tundra
Tundra
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Summary:Laboratory experiments were conducted in a hermetically sealed growth chamber with two soil samples obtained from the arctic tundra zone with different levels of moisture. Samples were maintained at a growing season typical of the region from which they were taken, and for the sample with a high level of moisture it was made twice: with the temperature in accord with natural conditions and one increased by 2°C. It has been shown that heating of the overmoistened tundra soil by 2°C can increased the average carbon dioxide emissions by almost two times (from 75 to 100–150 mg m –2 h –1 ). Upon the application of heat, no significant increase in methane emission was observed.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X18120115