Effect of Different Soil Hydrothermal Conditions on Production of CO2 from the Leached Chernozem Soil (Modeling Experiment)
Abstract
In controlled hydrothermal conditions it has been shown that the rate of mineralization processes in the leached chernozem soil (the central forest-steppe zone of Western Siberia) is determined mostly by temperature compare to humidity. The intensive phase of the process of mineralization of soil organic matter, due to moisture, is completed in the first 15 days, and the dynamics of the emission CO2 is less dependent on hydrothermal indicators in the experiment. The dynamics of the formation of carbon dioxide affects the amount available in the soil for degradation of plant material that is depleted over time. Consequently there is a gradual decrease in CO2 production soil. Temperature coefficient Q10 for leached chernozem in the temperature range of 10–25 °C varied between 1,3–2,9. It was revealed in the experiment, that the less Q10 ratio, the higher the rate of release of CO2 was from the leached chernozem soil.
About the Author
Andrey Gennadievich Shepelev
Melnikov Permafrost Institute SB RAS
Russian Federation
Russian Federation
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For citations:
Shepelev A.G. Effect of Different Soil Hydrothermal Conditions on Production of CO2 from the Leached Chernozem Soil (Modeling Experiment). Arctic and Subarctic Natural Resources. 2017;22(1):53-62. (In Russ.)
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