MODELAGEM VOLUMÉTRICA DE FRUTÍFERAS DO CERRADO

Abstract

Scientific work was carried out in an experimental area of the Goiano Federal Institute-Campus Ceres, aiming to determine the volumetric equation for the Cerrado wood in the region. Thus, we identified and collected data from five species chosen totaling 88 trees, with DAP equal to or greater than 5 cm. The dendrometric variables considered in the standing tree were DAP and total height. In the determination of cubic units measured the height of the spindle and the diameters at the height of 0.05 m of the soil and height of the first bifurcation of the fuste. Twelve volumetric models were tested. The volume of wood with bark, by the formula of Smalian, obtained total volume 0.86 m³ per hectare. The volumetric equation that best suited was Spurr, resulted in greater significance of the adjusted coefficient of determination R_aj ^ 2 > 0.95, and smaller errors and estimated deviations (S_xy=19%, EM= -0,00036; EMa= -0,93; DG%= -0,21).