Dry matter content in the biomass of trees of 13 species of Eurasia: geographical aspects
Abstract
In studies of biological productivity of forests and their response to climate change, it is necessary to know the patterns of dynamics of their not only quantitative, but also qualitative (qualimetric) characteristics of tree biomass. From the point of view of the problems of the tree biomass evaluated in the absolutely dry condition, the content of dry matter (CDM) in its fractions is of the greatest interest. The study of CDM was carried out on the basis of 2574 sample trees having the measured indicators of tree age, stem diameter and CDM in stem wood, stem bark, foliage and branches of 13 forest-forming species of Northern Eurasia. For the first time, allometric models of the mixed-effects were constructed, according to which the CDM decreases in the direction from the South to the North in all biomass fractions within species ranges. In the direction from the West to the East, the CDM of wood and bark decreases, and foliage and branches increases. The contributions of dendrometric and geographical independent variables, as well as tree species belonging, to the explanation of the variability of CDM in biomass fractions are 15, 13 and 72 %, respectively. For the first time, the ranking of woody species of Northern Eurasia by CDM in biomass fractions was performed, according to which the distribution of species by the CDM in each biomass fraction is quite specific. The proposed allometric models can be used in the assessment of aboveground biomass and carbon depositing capacity of forest-forming species of Eurasia.
About the Authors
V. A. Usoltsev
Botanical Garden of the Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
V. A. Usoltsev
202a, 8 Marta Str., Yekaterinburg, 620144
I. S. Tsepordey
Botanical Garden of the Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
I. S. Tsepordey
202a, 8 Marta Str., Yekaterinburg, 620144
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Review
For citations:
Usoltsev V.A., Tsepordey I.S. Dry matter content in the biomass of trees of 13 species of Eurasia: geographical aspects. Conifers of the boreal area. 2022;40(3):194-201. (In Russ.)
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