Abstract

COLLAZOS AVENDANO, Julio Cesar; BARRIOS TRILLERAS, Alonso  and  DIAZ SIERRA, Daniel Ronaldo. Dominant Height Models for Gmelina arborea Roxb. in Colombia. Colomb. for. [online]. 2024, vol.27, n.1, e20569.  Epub Mar 19, 2024. ISSN 0120-0739.  https://doi.org/10.14483/2256201x.20569.

The concept of forest productivity is biologically complex. In forest masses, it is indirectly estimated via dominant height growth models and site indices. The aim of this study was to develop a dominant height model for Gmelina arborea using data from 129 monitoring plots. 9 dynamic equations were generated from the Hossfeld and Bertalanffy-Richards theoretical models, which were individually fitted and cross-validated. Among the evaluated models, the Bertalanffy-Richards model (parameter c) stood out. This model showed a logical biological trend, with polymorphic curves and a unique asymptote. The selected model is an important tool for the management of G. arborea forest plantations in areas with site characteristics similar to those of this study.

Keywords : site index curves; dynamic equations; polymorphism; forest productivity; cross-validation.

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