Productivity of mosses and organic matter accumulation in the litter of sphagnum larch forest in the permafrost zone |
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Authors: | A S Prokushkin A A Knorre A V Kirdyanov E-D Schulze |
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Institution: | (1) Sukachev Institute of Forest, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia;(2) Max Planck Institute for Biogeochemistry, 07701 Jena, Germany |
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Abstract: | Productivity of the moss cover and necromass accumulation in the litter of a sphagnum larch forest have been estimated on the basis of tree age. It has been shown that the total carbon stock in the litter of a 100-year-old stand, including organic matter not destroyed by fire, exceeds the corresponding value for the tree stand itself by more than an order of magnitude. The accumulation of organic matter on the soil surface inhibits the growth of larch. In particular, this factor impairs hydrothermal conditions in the soil and causes a rise of the permafrost table; as a consequence, lower layers of the root system die off. |
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Keywords: | sphagnum moss larch tree age permafrost zone accumulation productivity carbon nitrogen |
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