Аграрный вестник Урала № 11 (165) 2017Биология и биотехнологии
TRANSCONTINENTAL ADDITIVE ALLOMETRIC MODELS AND WEIGHT TABLES FOR ESTIMATING BIOMASS OF TWO-NEEDLED PINE TREES IN NATURAL FORESTS AND PLANTATIONS
For the first time in Russian literature the problem of harmonizing allometricmodels of pine tree biomass components (stem, branches, foliage, roots) bymeans of ensuring the principle of their additivity has been solved. It isimplying that the sum of biomass values obtained by component equations shouldbe equal to the value of total biomass received with the general equation. Forthis purpose the unique tree biomass database in a number of 2080 two-needledpine trees (subgenus Pinus L.) ofnatural and artificial origins growing on the territory of Eurasia is compiled.Additive systems of biomass component relations, as two transcontinental three-stepmodels of proportional weighting are designed. On their basis the correspondingtaxation tables of the biomass component composition involving two inputs – the stem diameter at breast height and the tree height – are suggestedfor natural pine forests and plantations separately. The proposed models andcorresponding tables for estimating tree biomass make their possible to calculatetwo-needled pine biomass per ha (t/ha) on Eurasian forests as the firstapproximation when using measuring taxation. Because such transcontinentalmodels and tables may have biases in local conditions for their application, inthe next stage of this research more detailed, regional tree biomass models andtables through disaggregating proposed here common models for regional ones usingdummy variables will be developed.
subgenus Pinus L., natural forests, plantations, biosphere role of forests, biomass of trees, allometric models, equations additivity, transcontinental table of tree biomass.
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