DYNAMICS OF FORMATION OF PINE FORESTS (PINETA SILVESTRIAE) OF THE REPUBLIC OF BELARUS

UDC 630*161.32:630*907.3

  • Rozhkov Leonid Nikolaevich − DSc (Agriculture), Professor, Professor, the Department of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: rozhkov@belstu.by

  • Yeroshkina Irina Fedorovna − PhD (Agriculture), Assistant Professor, the Department of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: e_ira@belstu.by

  • Shatravko Valentin Gennadievich − PhD (Agriculture), director. Central Botanical Garden of the National Academy of Sciences of Belarus (В2, Surganova str., 220012, Minsk, Republic of Belarus). E-mail: vshatravko@mail.ru

DOI: https://doi.org/10.52065/2519-402X-2022-258-2-37-48

Key words: formation of pine forests, dynamics of the area, fullness, density, non-normative pine young forest, derivatives of small-leaved pine young forest.

For citation: Rozhkov L. N., Eroshkina I. F., Shatravko V. G. Dynamics of formation of pine forests (Pineta silvestriae) of the Republic of Belarus. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2022, no. 2 (258), pp. 37–48 (In Russian). DOI: https://doi.org/10.52065/2519-402X-2022-258-2-37-48.

Abstract

The results of the formation of the pine formation over a 65-year period (1956–2021) with parallel dynamics of the development of the birch formation are considered. The trend of growth of the areas of both formations is stated, which is due to the growth of forest lands in the forest fund. Irrational use of forest lands is noted. In the added area of forest lands, the proportion of pine formation is 1.8 times less than the recommended optimal, and birch formation is 1.7 times more optimal.

Two different vector periods in the dynamics of pine and birch formations are discussed: 1956–1988 and 2001–2021. The last two decades have been characterized by a decrease in the relative share of pine and an increase in the birch formation in the forest fund. The reason is the insufficiency or absence of lightening, cleaning and the first thinning after a high-quality reproduction of the pine formation. Intensive succession has been established with the replacement of pine saplings by birch plantations.

Significant areas of abnormal in terms of completeness and density of young pine trees up to 30 years of age have been identified. The characteristic in the context of age, completeness and density of abnormal pine young is given. An individual method of caring for pine tree biogroups is recommended in order to prevent the replacement of pine with birch.

Groups of small-leaved stands up to 30 years of age with the participation of 1 to 3 pine units were established. The possibility of restoring the indigenous pine stand in derived small-leaved stands with the participation of pine in the composition is being considered.

The possibility of reducing the “loss” of the pine formation in an annual volume of 1.3% from reproduction to natural 0.4% is predicted on the basis of individual felling of the main breed as opposed to traditional felling of plantings.

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References

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