Formation of complex pine forests in the Serebryanny Bor experimental forestry unit

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Abstract

The paper deals with dynamics and development of complex pine forests of the Serebryanny Bor experimental forestry unit of the Institute of Forest Science of the Russian Academy of Sciences at various stages of succession. The origins and future prospects of this group of forest types remain debatable. The subjects of the study were the old-growth pine stands and their natural regeneration after clear sanitary felling. It was found that most of the studied pine forests were of natural origin. At the age of over 150 years, pine stands maintain positive dynamics of growth in terms of wood stock. On average, the growth of Scots pine (Pinus sylvestris L.) over 20 years was 1.7 m3/ha per year, and the average growth was 1.8 m3/ha per year. On all the study sites, the fastest growth under the canopy of pine forests was noted in small-leaved linden (Tilia cordata Mill.), which is omnipresent in the second storey and sometimes even reaches the first storey. The living ground cover is dominated by plants of the nemoral group. The process of nemoralisation occurs in all storeys of phytocoenoses. In case of catastrophic disturbances in clearings, a significant amount of natural regeneration of tree and shrub species can be observed. At the same time, Scots pine prevails quantitatively, but is significantly inferior to deciduous species in the rate of growth height-wise. Despite the participation of meadow species, the grass cover retains a forest appearance with a high proportion of nemoral group species. Scots pine is able to successfully regenerate after catastrophic disturbances, but the formation of pine forests is possible only in case of timely forestry activities.

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About the authors

Yu. B. Glazunov

Institute of Forest Science of the RAS

Author for correspondence.
Email: yu.b.glazunov@mail.ru
Russian Federation, Sovetskaya st. 21, Uspenskoe, Odintsovsky District, Moscow Oblast, 143030

S. A. Korotkov

Institute of Forest Science of the RAS; Bauman Moscow State Technical University

Email: yu.b.glazunov@mail.ru

Mytishchi branch

Russian Federation, Sovetskaya st. 21, Uspenskoe, Odintsovsky District, Moscow Oblast, 143030; 1st Institutskaya st. 1, Mytishchi, Moscow Oblast, 141005

D. V. Lezhnev

Institute of Forest Science of the RAS

Email: yu.b.glazunov@mail.ru
Russian Federation, Sovetskaya st. 21, Uspenskoe, Odintsovsky District, Moscow Oblast, 143030

A. V. Titovets

Institute of Forest Science of the RAS

Email: yu.b.glazunov@mail.ru
Russian Federation, Sovetskaya st. 21, Uspenskoe, Odintsovsky District, Moscow Oblast, 143030

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2. Fig. 1. Graphs of the dependence of heights on diameters at PPP-1 and PPP-14 in 2004 and 2023.

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3. Fig. 2. Share of woody and shrubby vegetation in clearings in Serebryanoborsky experimental forestry in the sixth year after disturbances.

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4. Fig. 3. Spectrum of ECG in clearings in shares of relative participation (%). Explanation of symbols: Br – boreal ECG; Md – meadow; Nm – nemoral (species of broad-leaved forests); Nt – nitrophilic (species of black alder forests); Pn – pine forest (species of pine forests); St – steppe; Wt – wetland; Adv – alien species; Olg – oligotrophic species.

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