Increasing the productivity of deciduous and coniferous forest stands by thinning in the taiga zone
https://doi.org/10.21266/2079-4304.2024.251.158-171
Abstract
Deciduous coniferous forest stands occupy a significant area among the forests of the taiga zone. The formation of valuable coniferous formations in such areas is a fundamental goal of the forestry. One of the possible ways to achieve this goal is timely and quality thinning at various stages of forest stands formation. The aim of the study was to determine the silvicultural efficiency of three-stage thinning in deciduous coniferous forest stands formed in the taiga zone. Long-term scientific studies have been carried out since 1966 on permanent sample plots one of which is a control option, the second is an experimental version with thinning at the age of spruce 20, 28 and 40 years. During the first thinning, spruce (65% by the number of trunks), birch (80%) and pine (60%) were cut down evenly over the area, at the second rarefaction – 80, 65 and 50% of the trunks (of the number of trees preserved after the first intake), respectively, at the third thinning – 15, 60 and 70% of the trunks (of the number of trees preserved after the second intake), respectively. Carrying out three-stage thinning in deciduous and coniferous stands growing in the taiga zone of the European North of Russia gave a positive silvicultural effect. As a result of thinning carried out, the average annual increase in diameter, height of trunks and stock of stem wood grew. By thinning by the age of 74 years of forest stands, it was possible to form a coniferousdeciduous stand from deciduous-coniferous stands, where the total stock of coniferous wood is 67%. By carrying out classical thinning in deciduous and coniferous forest stands, it was possible to form stands with a predominance of coniferous species, as well as to enhance the increase in diameter, height and volume of trees trunks saved for growing.
About the Authors
E. A. SurinaRussian Federation
SURINA Elena A. – PhD (Agricultural), Leading Researcher
163062. Nikitova str. 13. Arkhangelsk
WOS Research ID: IZQ-0959-2023
Scopus Author ID: 57329896400
N. A. Demidova
Russian Federation
DEMIDOVA Natalia A. – Leading Researcher
163062. Nikitova str. 13. Arkhangelsk
WOS Research ID: T-1151-2019
Scopus Author ID: 57210768562
S. A. Korchagov
Russian Federation
KORCHAGOV Sergeyi A. – DSc (Agricultural), Principal Researcher of the Vologda Regional Laboratory, Professor
160014. Gorky str. 83 A. Vologda
WOS Research ID: HLQ-4954-2023
Scopus Author ID: 57221951065
O. A. Konyushatov
Russian Federation
KONYUSHATOV Oleg A. – PhD (Agricultural), Researcher
160014. Gorky str. 83 A. Vologda
WOS Research ID: JEZ-9194-2023
L. G. Gogoleva
Russian Federation
GOGOLEVA Ludmila G. – Researcher
163062. Nikitova str. 13. Arkhangelsk
WOS Research ID: ABE-1664-2020
Scopus Author ID57219987384
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Review
For citations:
Surina E.A., Demidova N.A., Korchagov S.A., Konyushatov O.A., Gogoleva L.G. Increasing the productivity of deciduous and coniferous forest stands by thinning in the taiga zone. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2024;(251):158-171. (In Russ.) https://doi.org/10.21266/2079-4304.2024.251.158-171