The role of soil cover in maintaining the structural and functional integrity of northern taiga ecosystems in Western Siberia |
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Authors: | O. Yu. Goncharova A. A. Bobrik G. V. Matyshak M. I. Makarov |
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Affiliation: | 1.Moscow State University,Moscow,Russia |
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Abstract: | The soils of the studied area function in different temperature regimes: under the influence of permafrost (Turbic Histic Cryosol and Cryic Eutric Histosol) and long-term seasonal freezing (Albic Podsol). Sporadic permafrost defines the differences in temperature regimes. All soils are characterized by the low production of carbon dioxide (an average of 160 mg CO2/(m2 h)), indicating their low biological activity. The lack of easily available carbon for microorganisms is detected in all investigated soils by the Cmic: Corg ratio despite the high reserves of organic matter. The value of CO2 emission and the Cmic: Corg ratio are “site-specific” for the region of investigation and may be used as indicators of environmental changes. Cryogenic peat soils represent a unique natural object and ensure the functional diversity and integrity of northern taiga ecosystems in Western Siberia. |
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