CO2 emissions of the non-tree vegetation cover in larch (Larix gmelinii (Rupr.) Rupr.) stands in the Central Evenkia region of Siberia, Russia
2006
Masyagina, O.V.(V.N. Sukachev Inst. of Forests, Krasnoyarsk (Russian F.)) | Prokushkin, S.G. | Mori, S. | Takagi, K. | Nomura, M. | Abaimov, A.P.
CO2 emissions from various vegetation components were studied in larch-dominated stands (Larix gmelinii (Rupr.) Rupr.) in the Central Evenkia region of Siberia, Russia, during growing season in 2001. We found a clear relationship between air temperature and CO2 emission rate of the dominant vegetation components (such as Sphagnum and green mosses, lichens, and dwarf shrubs). The CO2 emission rate of Sphagnum, green mosses, and lichens (measured as CO2 evolution from their surface) ranged from 0.04 to 0.24 mg CO2/g oven-dry weight(odw)/h during growing season. The CO2 emission rate of the aboveground parts of dwarf shrubs ranged from 0.65 to 5.54 mg CO2/g odw/h. The contribution of the different components of the vegetation cover varied among stand types; for example, in Sphagnum associations, up to 94% of the total CO2 emission occurred from the Sphagnum-green mosses-lichen cover, whereas in stands dominated by dwarf shrubs, 90% of total CO2 emission occurs from the dwarf shrubs.
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