Crescimento da <i>Grevillea robusta</i> A. Cunn. na Depressão Central do Rio Grande do Sul, Brasil.

Abstract

RESUMONo presente trabalho, foram estudados o crescimento em diâmetro, o volume comercial e o fator de forma comercial em função da idade da Grevillea robusta A. Cunn., na região da Depressão Central do Rio Grande do Sul, Brasil. Para isto, foram amostradas três árvores dominantes, abatidas e seccionadas segundo o método de Smalian, no qual foram tomadas as fatias para análise dos anéis anuais de crescimento. As medições dos anéis de crescimento foram realizadas pela técnica de análise de tronco, com a medição de quatro raios. Os resultados obtidos para a estimativa do crescimento indicaram que várias equações poderiam ser usadas para esta finalidade, com alta precisão estatística. O crescimento médio em diâmetro, aos 30 anos de idade, foi de 36,0 cm; em volume comercial sem casca, de 1,2388 m 3 ; e fator de forma comercial, de 0,79, o que indica ter a espécie um ótimo potencial para reflorestamentos comerciais.Palavras-chave: crescimento; volume comercial; fator de forma comercial. ABSTRACTIn this work the growth in diameter, merchantable volume and merchantable form factor as a function of the age of Grevillea robusta A. Cunn. were studied, in the area of Central Depression of Rio Grande do Sul, Brazil. For this purpose, dominant trees were sampled, cut down and cubic scaled according to the Smalian method. Next, slices of stem were taken for annual growth rings analysis. The measurements of the growth rings were accomplished through the technique of stem analysis, by measuring four radii. The results obtained for the estimate of growth indicated that several equations can be used for this purpose with high statistical precision. The medium growth, at 30 years of age, in diameter was 36.0 cm, merchantable volume, 1.2388 m 3 and merchantable form factor, 0.79, indicating great potential for commercial reforestation.

Age and Growth Affect Oleoresin Yield From Copaiba Trees in the Cerrado-Amazonia Ecotone

“…The heterogeneity of natural tropical forests confers a high diametric amplitude to the trees, which could be why R²adjust. showed a weaker relationship between age and DBH than that observed in studies of forest plantations, in which the diametric amplitude tended to be more homogeneous (Finger et al, 1996;Canto and Schneider, 2004;Schneider et al, 2006;Sanquetta et al, 2010). There are few models that predict tree growth using tree size variables in tropical rainforests (Da Cunha et al, 2016).…”

Pure and Decorative Plywood Panels from Cordia trichotoma and Grevillea robusta

“…It is considered a fast growing species that demonstrates good adaptation and production for commercial use (Inoue & Martins, 2006). Canto & Schneider (2004) emphasize its excellent growth and potential for plantations with the objective of manufacturing large sized timber for sawing or even lamination, as its wood presents good technological characteristics. Lamprecht (1990) describes the wood as highly attractive, with beautiful drawings, especially around the knots, and Inoue & Martins (2006) emphasize its application in decorative panels due to its natural brightness.…”