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DYNAMICS OF THE SOIL CO2 EMISSION DURING SNOW-FREE PERIOD IN THE IN MIDDLE TAIGA ZONE OF CENTRAL SIBERIA
Abstract
The soil is a major reservoir for carbon (C) in biosphere, containing globally twice as much C as the atmosphere and three times as much as vegetation. Soil CO2 efflux is highly sensitive to changes in surface temperature and relatively small changes in surface temperature may have a major influence on the magnitude of soil efflux. The potential increase in CO2 release from the soil caused by future elevated temperature may have a positive feedback effect on the atmospheric CO2 and global changes. For estimation of C budgets in target ecosystems, we must be able to account for small-scale spatial variation in soil respiration. Vegetation models require incorporating both temporal and spatial variation of soil respiration and scaling-up the chamber measurements of soil respiration to ecosystem level. In the this study, were compared different underline surfaces due to the soil CO2 emission and identified the main driving factors of soil CO2 emission there. It was created the model which combines the meteorological parameters of whole area and local specific features of each ecosystem.
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