Ecosystem Transformation (), 13-29

Carbon dioxide emission from the soil surface of secondary deciduous phytocenoses (South Timan, Komi Republic)

Arzubov P.A. , Gorbach N.M., Osipov A.F., Dymov A.A.

To understand the impact of clear-cutting on carbon dioxide emissions from the soil surface, it is necessary to obtain empirical data in various areas. This paper provides data on the evaluation of soil respiration dynamics from June to October 2024 on three plots: the background blueberry-green moss spruce forest, an 8-year-old clear-cut area, and an 18-year-old clear-cut area, all located in the middle taiga of the Komi Republic. The studied communities grow on typical podzolic soils, on developing dusty cover loams. A 1.4-fold increase in the rate of CO2 flux from the soil surface of the 8-year-old clear-cut area was found compared to the stand, while no differences were found with the 18-year-old post-cut community. From the soil surface of skid roads (paths for logging equipment movement), CO2 emissions are 2.3 times higher than in the blueberry spruce forest, and 1.1‒1.4 times higher than in feling areas with a relatively undisturbed soil cover. A reliable positive relationship was established between soil temperature and carbon dioxide emission from the soil surface, at a depth of 5 cm (R2 = 0.39‒0.62) and 10 cm (R2 = 0.20‒0.56). The soil of the blueberry spruce forest emits 635−698 gС m−2 during the snowless period, felling areas 651−728 and 630−645 gС m−2, for В8 and В18-year old felling, respectively, the same age 1089−1240; 1180−1341 gС m−2. Large amplitudes of values – are observed on skid roads, which is most likely due to the presence of post-logging residues that lie at a depth of 10 cm.

P. A. Arzubov
Pitirim Sorokin Syktyvkar State University
Oktaybrskiy Prospect St. 55., Syktyvkar, 167001 Russia

Institute of Biology, Komi Science Centre, Ural Branch of the Russian Academy of Sciences
Kommynisticheskaya St. 28, Syktyvkar, 167982 Russian Federation

arzubov-2000@mail.ru

N. M. Gorbach
Institute of Biology, Komi Science Centre, Ural Branch of the Russian Academy of Sciences
Kommynisticheskaya St. 28, Syktyvkar, 167982 Russian Federation


A. F. Osipov
Institute of Biology, Komi Science Centre, Ural Branch of the Russian Academy of Sciences
Kommunisticheskaya St. 28, Syktyvkar, 167000 Russia


A. A. Dymov
Institute of Biology, Komi Science Centre, Ural Branch of the Russian Academy of Sciences
Kommynisticheskaya St. 28, Syktyvkar, 167982 Russian Federation

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