SOME FEATURES OF THE INFLUENCE OF LOGGING ON THE CONTENT OF CHEMICAL ELEMENTS IN CONIFEROUS PHYTOCENOSES AND SOIL IN THE CONDITIONS OF THE NEGORELSKY EDUCATIONAL-EXPERIMENTAL AND MINSK FORESTRY ENTERPRISES

UDC 630*221:630*114

  • Yushkevich Mikhail Valentinovich – PhD (Agriculture), Associate Professor, Assistant Professor, the Department of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: les@belstu.by

  • Shiman Dmitriy Valentinovich – PhD (Agriculture), Associate Professor, Assistant Professor, the Department of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: les@belstu.by

  • Klimchik Gennadiy Yakovlevich – PhD (Agriculture), Associate Professor, Assistant Professor, the Department of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: les@belstu.byles@belstu.by

  • Bel’china Olesia Grigorievna – JMaster’s degree student, the Departament of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: belchyna@belstu.by

  • Klysh Andrey Sergeevich – PhD (Agriculture), the Head of the Department of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: klysh@belstu.by

DOI: https://doi.org/10.52065/2519-402X-2021-240-5-42-51

Key words: felling, phytocenosis, soil, chemical elements, felling residues.

For citation: Yushkevich M. V., Shiman D. V., Klimchik G. Yа., Bel’china O. G., Klysh A. S. Some features of the influence of logging on the content of chemical elements in coniferous phytocenoses and soil in the conditions of the Negorelsky educational-experimental and Minsk forestry enterprises. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2021, no. 1 (240), pp. 42–51 (In Russian). DOI: https://doi.org/10.52065/2519-402X-2021-240-5-42-51.

Abstract

The content of chemical elements (phosphorus, potassium, calcium, magnesium, and nitrogen) in forest phytocenoses, forest floor, and soil was determined depending on the logging, reforestation directions, and methods of handling felling residues. In the case of main-use forests, there is a significant amount of removal of elements from the forest ecosystem, mainly due to tree trunk. The difference between gradual and continuous cutting is the gradual removal of almost the same volume of elements. At the same time, the elements accumulated in the phytocenosis during the felling cycle by their mass are 2.9–3.7 times higher than their reserves in the forest floor and soil (up to 30 cm). Removal of chemical elements with felling residues does not exceed 10% of their total stock in the phytocenosis, forest floor and soil and is 30–40% of the content of nutrients in the forest floor and soil (up to 30 cm). After logging of the main use, the mass of ash elements and N in the forest floor and soil (up to 30 cm) is not less than in the areas of medium-aged, Mature and Mature stands where logging is carried out. The type of main-use logging, the direction of reforestation, and the method of clearing logging sites (removal/non-removal of felling residues from the forest) do not significantly affect soil fertility and, presumably, the productivity of the next generation of stands.

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27.10.2020