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Revista Árvore

Print version ISSN 0100-6762


BINOTI, Daniel Henrique Breda et al. Diametric distribution model thinned eucalypt stands for using a hyperbolic function. Rev. Árvore [online]. 2011, vol.35, n.5, pp.1069-1076. ISSN 0100-6762.

The objectives of this study were to adjust, to employ and to propose diameter distribution models with different hyperbolic function shapes for the projection of the diameter distribution of thinned stands. It was used data from an experiment on thinning set up in three stands of an Eucalyptus grandis × Eucalyptus urophylla hybrid, located in the northeastern Bahia state. The permanent plots were measured at 27, 40, 50, 58, 61, 76, 87, 101 and 112, 125, 135, 147 and 160 months, with a thinning carried out at 58 months of age and a second thinning conducted at 130 months of age. The two-parameter function showed the best results of root mean square error (RMSE), bias and bias%.

Keywords : Truncated hyperbolic function; Thinning; Multiproducts.

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