Avaliação do índice de rendimento volumétrico de toras das espécies Goupia glabra aubl., Qualea paraensis Ducke e Trattinnickia burserifolia Mart.

Abstract

With the changes proposed by CONAMA Resolution No. 474 of April 6, 2016, the timber industries had their index yeld reduced from 45% to 35%, an amount considered low by the forest-based sector of the Amazon region. The objective of this study was to evaluate the volumetric yield of three native Brazilian forest species (Goupia glabra Aubl., Qualea paraensis Ducke and Trattinnickia burserifolia Mart.), In order to compare them with the yield established by law. The study was carried out in a sawmill located in the city of Sinop-MT, and 8 trunk of each species were randomly selected. After that, the volume of the sawn timber was calculated to obtain the volumetric yield . The values of the yield indices found in the study were: Goupia glabra Aubl.- 60.69%; Qualea paraensis Ducke - 60.05% e; Trattinnickia burserifolia Mart -61.05%. It was verified that the indexes of yield are superior to the one established by the Resolution of CONAMA, referring to a perspective of new works with a greater number of species of the Amazon, taking into account all the aspects that can influence the yield in sawn wood.