Abstract

CORRAL-RIVAS, S.  and  NAVAR-CHAIDEZ, J. de J.. Comparisons of bole volume estimation techniques for five pine species of Durango, Mexico. Rev. Chapingo ser. cienc. for. ambient [online]. 2009, vol.15, n.1, pp.5-13. ISSN 2007-4018.

In this study, ten methods for estimating total stem (bole) volume inside bark, were compared for five pine species distributed in the State of Durango, Mexico. Total stem volume was thus estimated by the conventional equations of 1) Smalian, 2) Newton and 3) revolution of solids, and the taper models of 4) Amidon, 5) Biging, 6) Clutter, 7) Kozak 1, 8) Kozak 2, 9) Newnham and 10) Rustagi and Loveless. Total tree stem volume models of a) Schumacher and Hall, b) Spurr, c) Spurr transformed, d) Honer, e) Sloboda, f) Naslund and g) Australian, were fitted to estimated volumes by the indicated mathematical methods using the independent variables, diameter at breast height (d) and total height. Volume data generated by those conventional models were compared using covariance analysis with the aim to employ those that are compatible with the tree volume estimation by the conventional equation of Smalian. Results showed that the taper equations of Amidon and Biging provided comparable tree and stand volumes to those estimated by the conventional approaches that employ the volume estimated by the Huber, Smalian or Newton equations. Therefore, these two taper equations are widely recommended to estimate total or merchantable volume of the five studied pine species of Durango, Mexico.

Keywords : total stem volume estimation; taper functions; volume equations; pine species; Mexico.

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