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

Abstract

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.

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ACKNOWLEDGMENTS

This study was supported by the Russian Foundation for Basic Research, the Krasnoyarsk Krai Government and the Krasnoyarsk Regional Fund of Science (project no. 17–45–240884), the Russian Foundation for Basic Research (project no. 16–04–01677-а), and the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, governmental assignment, theme no. 56.1.4. for 2013–2020.

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Correspondence to Yu. V. Barkhatov.

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Translated by L. Krivenok

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Barkhatov, Y.V., Ushakova, S.A., Shikhov, V.N. et al. The Influence of Temperature and Humidity on Greenhouse Gas Emission in Experiments on Imitation of the Full Vegetation Cycle of Tundra Ecosystems. Dokl. Earth Sc. 483, 1539–1541 (2018). https://doi.org/10.1134/S1028334X18120115

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