UDC

630*2:582.475

Authors

Zarubina Liliya Valeryevna
Faculty of Agronomy and Forest Management, Vologda State Dairy Farming Academy by N.V. Vereshchagin (Vologda, Russia)
е-mail: kaf_leshoz@mail.ru, Liliva270975@yandex.ru
Konovalov Valeriy Nikolaevich
Forestry Engineering Institute, Northern (Arctic) Federal University named after M.V. Lomonosov (Arkhangelsk, Russia)
е-mail: v.konovalov@agtu.ru
Feklistov Pavel Aleksandrovich
Forestry Engineering Institute, Northern (Arctic) Federal University named after M.V. Lomonosov (Arkhangelsk, Russia)
е-mail: feklistov@narfu.ru
Klevtsov Denis Nikolaevich
Forestry Engineering Institute, Northern (Arctic) Federal University named after M.V. Lomonosov (Arkhangelsk, Russia)
е-mail: d.klevtsov@narfu.ru

Abstract

The paper studied seasonal dynamics of root system respiration in pine and spruce trees growing in northern taiga plant communities, depending on the moisture regime of the peat soil and on the light conditions in the stand. It was found that in marshy habitats, the roots of woody plants have the weakest respiration in June, when the root zone is under water. After the roots have been released from excess moisture, their respiration activates significantly. In spruce and birch blueberry forests, root respiration rate is relatively high during the growth of vegetative organs. The main environmental factor having the greatest effect on root respiration in these types of forests is soil temperature. Selective cutting facilitates soil warming up and stimulates root respiration.

Keywords

root respiration in spruce trees, root respiration in pine trees, forest growth conditions, plant communities of northern taiga

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