Biomass functions applicable to European beech
Cienciala, E.(Ustav pro Vyzkum Lesnich Ekosystemu, Jilove u Prahy (Czech Republic))E-mail:Emil.Cienciala@ifer.cz | Cerny, M. | Apltauer, J. | Exnerova, Z.
This article describes parameterization of allometric functions applicable to biomass estimation of European beech trees. It is based on field data from destructive measurements of 20 full-grown trees with diameter at breast height (dbh) from 5.7 to 62.1 cm. The allometric functions contained two or three parameters and used dbh either as a single independent variable or in combination with tree height (H). These functions explained 97 to 99% of the variability in the measured aboveground biomass (AB). The most successful equation was that using both dbh and H as independent variables in combination with three fitted parameters. H, as the second independent variable, had rather a small effect on improving the estimation: in the case of AB, H as independent variable improved prediction accuracy by 1-2%, whereas in the case of branch biomass, it was by about 5%. The parameterized biomass equations are applicable to European beech in managed forests.
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