Soils of postpyrogenic larch stands in Central Siberia: Morphology, physicochemical properties, and specificity of soil organic matter
- Autores: Startsev V.1, Dymov A.1, Prokushkin A.2
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Afiliações:
- Institute of Biology, Komi Science Center
- Sukachev Institute of Forest
- Edição: Volume 50, Nº 8 (2017)
- Páginas: 885-897
- Seção: Genesis and Geography of Soils
- URL: https://journals.rcsi.science/1064-2293/article/view/224100
- DOI: https://doi.org/10.1134/S1064229317080117
- ID: 224100
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Resumo
Morphological features, physicochemical properties, and specific characteristics of the organic matter of cryozems (Cryosols) under postpyrogenic larch forests affected by fires 2, 6, 22, 55, and 116 years ago are considered. The morphological changes in the soils affected by fires are manifested by the burning of the upper organic horizons with preservation of pyrogenic features in the soils for more than a century after the fire. In the first years (2 and 6 years) after the fire, the acidity of the organic horizons and their base saturation become lower. The postpyrogenic soils are characterized by the smaller contribution of the organic horizons to the total pools of soil organic carbon. In the studied cryozems, the organic carbon content is correlated with the contents of oxalate-extractable iron and aluminum. A decrease in the content of water-soluble organic compounds in the soils is observed after the fires; gradually, their content increases upon restoration of the ground cover.
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Sobre autores
V. Startsev
Institute of Biology, Komi Science Center
Autor responsável pela correspondência
Email: startsev@ib.komisc.ru
Rússia, ul. Kommunisticheskaya 28, Syktyvkar, 167982
A. Dymov
Institute of Biology, Komi Science Center
Email: startsev@ib.komisc.ru
Rússia, ul. Kommunisticheskaya 28, Syktyvkar, 167982
A. Prokushkin
Sukachev Institute of Forest
Email: startsev@ib.komisc.ru
Rússia, Akademgorodok, Krasonyarsk, 660036