Augmentative Modelling: A Template for <i>Populus</i> sp. Stand Biomass in Eurasia Region

Vladimir Andreevich Usoltsev; Seyed Omid Reza Shobairi; Ivan Stepanovich Tsepordey; Viktor Petrovich Chasovskikh

doi:10.36808/if/2021/v147i3/151851

Augmentative Modelling: A Template for Populus sp. Stand Biomass in Eurasia Region

Authors

Vladimir Andreevich Usoltsev Faculty of Forestry, Ural State Forest Engineering University, Sibirskiy Trakt, 37, 620100 Yekaterinburg
Seyed Omid Reza Shobairi Research Center of Forestry Remote Sensing & Information Engineering, Central South University of Forestry and Technology, Changsha 410004
Ivan Stepanovich Tsepordey Botanical Garden of Ural Branch of RAS, Department of Forest Productivity, ul. 8 Marta, 202a, 620144 Yekaterinburg
Viktor Petrovich Chasovskikh Faculty of Forestry, Ural State Forest Engineering University, Sibirskiy Trakt, 37, 620100 Yekaterinburg

DOI:

https://doi.org/10.36808/if/2021/v147i3/151851

Keywords:

Genus Populus Sp., Biomass of Forests, Allometric Models, Sample Plots, Biological Productivity..

Abstract

Today, estimating of biological productivity or carbon-depositing ability of forests is going on the global level, and its increase is one of the major factors of climate stabilization. In recent years, two trends in the harmonization of allometric models of tree biomass have been developing. The first of them is related to ensuring the additivity of the biomass component composition, and the second one â€“ to the search for the so-called generic model applicable to a wide range of environmental conditions. However, all "generic" models give significant biases in their application in local conditions. In our modeling, we adhere to the principle of biomass additivity, split "generic" model into regional variants by introducing dummy variables, and build the model at the transcontinental level for the first time. When using the unique in terms of the volume of database on the level of stand of the genus Populus sp. in a number of 212 sample plots, the trans-Eurasian additive allometric models of biomass of stands for Eurasian Populus forests are developed, and thereby the combined problem of model additivity and generality is solved. The additive model of forest biomass of Populus is harmonized in two ways: it eliminated the internal contradictions of the component and the total biomass equations, and in addition, it takes into account regional differences of forest stands not only on total, aboveground and underground biomass, but also on its component structure, i.e. it reflects the regional peculiarities of the component structure of biomass.

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