DENDROMETRY PARAMETERS AND MECHANICAL RESISTANCE OF Eucalyptus CONE TREES IN AREAS SUBJECT TO WIND

• Autor(a) principal: Braz, Rafael Leite
• Data de Publicação: 2014
• Outros Autores: Oliveira, José Tarcísio da Silva, Rosado, Antônio Marcos, Vidaurre, Gabriela Baptista, Paes, Juarez Benigno
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/16608
• topic: breakage of trees; physical and mechanical parameters; Eucalyptus urophylla x Eucalyptus grandis; quebra das árvores; parâmetros físicos e mecânicos; Eucalyptus urophylla x Eucalyptus grandis.

http://dx.doi.org/10.5902/1980509816608This work was developed in order to evaluate the mechanical breakage of trees and its relation to the dendrometric characteristics, the wood specific gravity and bending (MOE, MOR and work to maximum load) in order to select clones more tolerant to wind action. The mechanical resistance of the trees to break was determined by the simulation of the effect of wind on them, getting the strength to break the trees. Ten clones of Eucalyptus urophylla x Eucalyptus grandis hybrid with 30 and 35 months in forest plantations in the lowlands were evaluated. The average force to break the trees was 79.00 kgf, the average height of 2.99 m. The average wood density was 0.40 g / cm ³. MOE, MOR and work to maximum load in static bending tests were equal to 60,965 kgf / cm ², 544 kgf / cm ² and10 J, respectively. The CNB017 showed the best results in the resistance of trees to break test and in the physical and mechanical parameters evaluated, being considered the most suitable clone for the areas subjected to wind breakage of trees.