CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS
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CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS |
RUSSIAN ACADEMY OF SCIENCES |
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T. A. Pristova, F. M. Khabibullina, Yu. A. Vinogradova The Role of Micromycetes in Forest Litter Formation in Deciduous Stands of the Middle Taiga // Forest Science (Lesovedenie). 2012. No 4. С.47-55. The forest litter formation and micromycetes were studied in a young birch-spruce forest and a middle-aged aspen-birch forest in the middle taiga (Republic of Komi). The deciduous stands are a product of natural forest regeneration after cutting of the bilberry-long moss forest. In the young birch-spruce forest, the annual amount of wood falloff is 1.3±0.7; that of the litter, 46.1±19.3 t ha-1. In the aspen-birch forest, these reserves are 2.8±0.4 and 40.0±0.1 t ha-1, respectively. The leaf falloff amounts to more than 80% of the total annual one. During the first year, more than half of the annual falloff is decomposed. The most intense decomposition of the falloff and litter is in the aspen-birch forest. As the C/N ratio in the litter is > 20 after the one- year decomposition, the main nitrogen amount accumulates in the microbial biomass. The species composition of micromycetes consists of 30 species (by 1.4 times as high as in the spruce forests of the middle taiga). A distinguishing feature of the young birch-spruce forest is abundant cellulose-destroying fungi of the Chaetomium genus. Their development in the young forest is related to the decomposition of forest residues in the soil. Middle taiga, deciduous stands, forest litter, micromycetes.. |
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