Modelos genéricos e específicos para estimativa do volume comercial em uma floresta sob concessão na Amazônia

Abstract

For commercial timber potential, forest evaluation is fundamental for forest concessions and forest operating licensing by environmental agencies. Therefore, it becomes necessary to develop new volumetric equations with good levels of precision for Amazonian forest species. Thus, the aim of this work was to fit and select models to estimate commercial tree species volume in a forest under concession in the Amazonian Forest. Models were fitted to obtain a general equation, considering 32 commercial species; and specific equations for the 12 main species. In order to reduce estimation errors, class diameter stratifications were tested for all equations. The Schumacher & Hall and Spurr were the best statistical models, whereas specific equations and diameter stratifications provided greater precision for volume estimates, thus being recommended mainly for data from natural forests.