Resumo

PORTAL CAHUANA, Leif Armando et al. Physical and anatomical radial variability of the Amburana cearensis (Allemao) A.C.Sm. tree log. Colomb. for. [online]. 2019, vol.22, n.1, pp.17-26. ISSN 0120-0739.  https://doi.org/10.14483/2256201x.13083.

There are few studies related with X-ray micro-densitometry regarding wood from native tropical forests. The objective of this study was to determine the radial variation of the apparent density of the Amburana cearensis (Allemao) A.C.Sm. wood by X-ray micro-densitometry. Indeed, eleven trees were selected, in which radial sections were cut from the pith to the cortex, in order to determine the apparent density and the anatomical characteristic in three radial positions. The results showed that the wood of A. cearensis presented mean values of wood density, minimum and maximum of 0.16 and 0.87 g.cm-3 respectively. Moreover, the wood showed significant difference in three positions of the pith, (intermediate and cortex), and this difference can be explained by the microscopic anatomy, especially with the vessels (diameter, area and number.mm-2). X-ray micro-densitometry is an important tool in the radial evaluation of wood and can help in the definition of the growth rings’ limits of A. cearensis.

Palavras-chave : density; x-ray densitometry; radial profile of wood.

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