Revista Cubana de Ciencias Forestales (Jun 2015)
Regression model for estimating the stem taper Pinus maestrensis Bisse plantations in Integrated Forest Enterprise Granma
Abstract
This paper was carried out in the planted forests of Pinus maestrensis Bisse of the Integral Forest Enterprise Granma (EFIG), with the purpose of adjusting a model of regression of profile of the shaft for the species. For that reason, 50 trees types were measured, cuts, for their later cubication. The obtained data of the trees were processed and they were object of statistical tests of lineal regression, using the package SPSS version 15.0 for Windows. The statistical of adjustment kindness and predictive capacities defined the cubic as the pattern of better adjustment given by the following equation: dicc/D1.3 = hi-1.3/ht-1.3