Abstract

GUZMAN-SANTIAGO, Juan Carlos; VARGAS-LARRETA, Benedicto; GOMEZ-CARDENAS, Martín  and  QUINONEZ-BARRAZA, Gerónimo. Commercial taper-volume function of Abies religiosa (Kunth) Schltdl. & Cham. in several regions of Mexico. Colomb. for. [online]. 2022, vol.25, n.1, pp.77-94.  Epub Mar 12, 2022. ISSN 0120-0739.  https://doi.org/10.14483/2256201x.17814.

The taper-volume relationship is an essential tool for planning silvicultural management in forests with the final aim of promoting the distribution of products. The objective of this study is the generation of a compatible model that allows an accurate estimation of the taper-volume of Abies religiosa in several regions of Mexico. A data set of 2608 values was considered for the analysis of the information; the model was simultaneously adjusted by seemingly unrelated regression (SUR) for the estimation of compatible parameters. The model generated coefficients of determination with fit levels higher than 97 %, roots mean square less than 0.40, biases lower than 0.11, with certainty to model each forest region, which are complemented with their respective Akaike information criteria (AIC). In most cases, the shape factor of the species went from neiloid to paraboloid. This information will be useful for timber forest inventories.

Keywords : height; goodness of fit; diameter; factor of shape; seemingly unrelated regression.

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