Abstract

Forest ecosystems play a major role in climate stabilization, and their continuous monitoring is of paramount importance. Plant properties reflect the adaptation of vegetation to changing environmental conditions, including climate. Therefore, it is important to know the adaptive capabilities of each tree species and the specifics of the response of its biomass to climate changes. According to the principle of limiting factors by Liebig-Shelford, a limiting factor of growth can be not only a lack, but also an excess of the factors such as light, heat and moisture [1]. The modern technology of air-borne laser scanning, which provides detailed information in three dimensions about the structure of the canopy, allows us to measure such morphometric characteristics of trees as the crown width and tree height. Their inclusion in the allometric model of saxaul (Haloxylon Bunge) biomass showed the presence of the determination coefficient from 0.841 to 0.854 [2]. The inclusion of temperature and precipitation as additional independent variables in allometric models of larch tree biomass made it possible to predict changes in biomass in Chinese forests during climate shifts [3]. In order to obtain adequate models sensitive to climate change, it is necessary to have experimental data on productivity and climate variables at the global or continental levels. In our study, we used a database of 4,440 sample trees of forest-forming species (genera) growing on the territory of Eurasia, with measured indicators of aboveground biomass, tree height and crown width, including two-needled Pinus sp., Picea spp., Abies spp., Betula spp. and Populus spp., i.e., 2128, 961, 300, 755, and 296 trees correspondingly [4].