Qualidade da madeira de andiroba em floresta de terra firme e várzea da Amazônia Oriental
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Data
2016-07-29
Autores
Firmino, Anderson Vasconcelos
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Editor
Universidade Federal do Espírito Santo
Resumo
The objective was to evaluate the quality of the wood of andiroba (Carapa guianensis) from upland forest and floodplain forest, through the characterization of juvenile and adult wood and wood color. Therefore, were collected eight trees from the extractive reserve Cajari River, located in the southern state of Amapá, four from upland forest and four floodplain forest. The trunk of each tree was removed a disc above the region that finished off the adventitious roots to in the pith - bark for morphology characterization of fibers and vessels, the angle of microfibrils, the basic density and volumetric and anisotropic factor contractions. The color of the wood was evaluated by the colorimetric parameters of the CIEL * a * b (1976). The fiber length was the property but adequate for delimitation of the transition between the juvenile and mature woods all the trees of andiroba. There was no significant difference between the proportion of juvenile wood between trees andirobas from upland forest and lowland forest. The properties of juvenile wood were lowest for adult wood for wood in both environments. The wood of andiroba was characterized by brown color - clear, both in the trees coming from upland forest and in floodplains. The wood Andiroba from the floodplain forest presented greater clarity and yellow tint than that of upland forest. The basic density and morphology of fibers and vessels were influential in determining the color of the wood of andiroba.
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Palavras-chave
Andiroba , Carapa guianesis , Growing environments , Ambientes de crescimento , Juvenile wood and adult wood , Lenho juvenil e lenho adulto , Physical and anatomical properties , Propriedades físicas e anatômicas
Citação
FIRMINO, Anderson Vasconcelos. Qualidade da madeira de andiroba em floresta de terra firme e várzea da Amazônia Oriental. 2016. 48 f. Dissertação (Mestrado em Ciências Florestais) - Universidade Federal do Espírito Santo, Centro de Ciências Agrárias e Engenharias, Jerônimo Monteiro, 2016.