BIOLOGICAL STABILITY OF FORESTS OF DIFFERENT ORIGIN

UDC 551.583;581.5

  • Yermokhin Maxim Valer’evich − PhD (Biology), Leading Researcher, Laboratory of Forest Ecology and Dendrochronology. V. F. Kuprevich Institute of Experimental Botany of the National Academy of Science of Belarus (27, Academicheskaya str., 220072, Minsk, Republic of Belarus). E-mail: maxim.yermokhin@gmail.com

  • Sazonov Aleksandr Aleksandrovich − Head of Forest Pathology Department of First Minsk Forest Inventory Expedition. Forest Inventory Republican Unitary Enterprise “Belgosles” (27/1, Zheleznodorozhnaya str., 220089, Minsk, Republic of Belarus). E-mail: lesopatolog@rambler.ru

  • Ignatiev Yaroslav Konstantinovich − Junior Researcher, the Laboratory of Forest Ecology and Dendrochronology. V. F. Kuprevich Institute of Experimental Botany of the National Academy of Science of Belarus (27, Academicheskaya str., 220072, Minsk, Republic of Belarus). E-mail: ignatev.y.k@gmail.com

DOI: https://doi.org/10.52065/2519-402X-2023-264-06

Keywords: class of biological stability, death of forest stands, origin of stands, land category, composition.

For citation: Yermokhin M. V., Sazonov A. A., Ignatiev Ya. K. Biological stability of forests of different origin. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2023, no. 1 (264), pp. 49–60. DOI: https://doi.org/10.52065/2519-402X-2023-264-06 (In Russian).

Abstract

The features of biological stability of forests of various origin and composition are identified on the base of materials from a detailed forest pathological survey of three forestries in 2017–2021. (Gluboksky, Baranovichsky, Mozyrsky), areas of clear sanitary cuttings in 2017–2021 (Baranovichi forestry) and historical maps of the 1930s. The main characteristics impact on the violation of the biological stability are (in descending order of importance): the previous category of land on which the stand appeared (forest land or agricultural land); origin (natural or artificial); composition of forest stands (pure or mixed); main species. It has been identified that the relative area of artificial stand with disturbed biological stability is 3–4 times higher on former agricultural lands compared to stand on forest lands. Natural and artificial stands growing on former forest lands have the highest biological stability. The relative area of pure artificial forest that died because of unfavorable weather conditions on former agricultural lands is 25 times higher than that of natural and artificial forest on former forest lands. The results of the study clearly show that to increase the biological stability of forests, it is necessary to change the practice of afforestation and reforestation.

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