Aboveground Biomass Of Mongolian Larch (Larix Sibirica Ledeb.) Forests In The Eurasian Region
| Autor: | Zaandrabalyn Tsogt, Igor M. Danilin, Vladimir A. Usoltsev, Viktor Petrovich Chasovskikh, Anna A. Osmirko, Ivan Stepanovich Tsepordey |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences Geography Planning and Development Environmental Science (miscellaneous) Permafrost 01 natural sciences tables of biomass dummy variables aboveground tree biomass 0105 earth and related environmental sciences Geography (General) Biomass (ecology) biology Crown (botany) Edaphic Forestry genus larix spp biology.organism_classification Larix sibirica G1-922 Environmental science Tree (set theory) Larch allometric models Aboveground biomass equations additivity regional differences 010606 plant biology & botany |
| Zdroj: | Geography, Environment, Sustainability, Vol 12, Iss 3, Pp 117-132 (2019) |
| ISSN: | 2542-1565 2071-9388 |
| DOI: | 10.24057/2071-9388-2018-70 |
| Popis: | We used our database of tree biomass with a number of 433 sample trees of Larix from different ecoregions of Eurasia, involving 61 trees from Mongolia for developing an additive model of biomass tree components. Our approach solved the combined problem of additivity and regionality of the model. Our additive model of tree aboveground biomass was harmonized in two ways: first, it eliminated the internal contradictions of the component and of the total biomass equations, secondly, it took into account regional (and correspondingly species-specific) differences of trees in its component structure. A significant excess of larch biomass in the forest-tundra is found that may be explained by permafrost conditions, by tree growth in low-yielding stands with a high basic density of stem wood and relatively high developed tree crown in open stands. The aboveground biomass of larch trees in Mongolia does not stand out against the background of the most ecoregions of Eurasia. Based on our results, we conclude that the growing conditions of larch in Mongolia are not as tough as it was suggested earlier by other scientists. Biomass relations between regions may be explained by unknown and unaccounted factors and errors of measurements in all their phases (assessment of age, diameter, height of a tree, the selection of supposedly representative samples of component biomass, their drying, weighing, etc.). The question what explains the regional differences in the structure of biomass of trees with the same linear dimensions of their stems, remains open. Undoubtedly, the differences in tree age here play an important role. Also, important factor is the variation in the morphological structure of stands, which, in turn, is determined by both climatic and edaphic factors. The obtained models allow the determination of larch forest biomass in different ecoregions of Eurasia with the help of height and diameter data. |
| Databáze: | OpenAIRE |
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