Changes in the biomass of scots pine (Pinus sylvestris L.) trees in Europe since 1940
https://doi.org/10.21266/2079-4304.2021.234.6-22
Abstract
Scots pine is one of the main forest-forming species in Europe, and its wood is widely used in the timber industry. When evaluating carbon-depositing functions, the conversion rations are assumed to be constant over time. Recent studies show that the ongoing climatic changes have a significant impact on the growth of trees and wood properties. Therefore, the purpose of this study is to identify long-term trends in the change in the biomass of Scots pine tree fractions in Europe since 1940. To test the hypothesis about the influence of the calendar year on the biomass of tree fractions, regression analysis was performed using linear mixed-effect models. The performed statistically analysis made it possible to reveal a significant effect (p < 0.05) of the calendar year only on the biomass of the trunks in the bark. The changes are most pronounced for trees in young and middle-aged stands, where the formation of the greatest radial growth occurs. For large-sized trunks, according to the simulation results, the biomass of the stems in the bark is not traced. In the coming decades, as a result of ongoing climate change, the decline in biomass and wood density of largesized stems should intensify. The revealed changes in biomass are accompanied by a decrease in wood density, which occurs as a result of an increase in the structure of the annual growth of looser and less dense early wood. Thus, in the context of accelerating growth rates of woody plants, the volume of trunks and wood stock should not be directly converted into deposited carbon, considering the historical values of conversion rations. This should also be considered when monitoring, modeling and using carbon and biomass in forests in the face of global change.
About the Authors
A. V. Lebedev
Forestry and Land Organization at Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
LEBEDEV Aleksandr V. – PhD (Agriculture), senior lecturer of the department of Agricultural Reclamation
127550. Timiryazevskaya str. 49. Moscow
V. V. Kuzmichev
Forestry and Land Organization at Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
KUZMICHEV Valery V. – DSс (Biology), professor, head of laboratory of the department of Agricultural Reclamation
127550. Timiryazevskaya str. 49. Moscow
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Review
For citations:
Lebedev A.V., Kuzmichev V.V. Changes in the biomass of scots pine (Pinus sylvestris L.) trees in Europe since 1940. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2021;(234):6-22. (In Russ.) https://doi.org/10.21266/2079-4304.2021.234.6-22
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