CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS
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CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS |
RUSSIAN ACADEMY OF SCIENCES |
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Karelin D.V., Pochikalov A.V., Zamolodchikov D.G., Gytarsky M.L. Spatiotemporal controls of soil CO2 fluxes in south taiga spruce forest in European Russia // Forest Science (Lesovedenie). 2014. No 4. С.56-66. 5-year long studies of carbon dioxide soil surface emissions carried out in south taiga spruce forest (Valday region, North-West of Russia) revealed the spatiotemporal factors at different scales from hours and days to seasons and years, and from micro- to mesobiotopes. The приземный air temperature, upper soil layer temperature and moisture, sum of precipitation before measurement, and also litter thickness, distance to the nearest log of spruce, distance to the nearest dry standing spruce, and coefficient of soil respiration rate increase were amongst the most significant soil respiration controls. The temperature at 1 cm depth in soil turned out to be the only significant parameter, which was common for spatial and temporal analyses of soil surface СО2 emission. Our data strongly advocate for the necessity of concurrent analysis of spatial and temporal factors, when estimating or predicting soil surface CO2 fluxes. Soil respiration, soil СО2 emission, spatiotemporal variability, boreal ecosystem.. |
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