Resumen

LINETTE, Salvo; ANANIAS, Rubén  y  CLOUTIER, Alain. INFLUENCIA DE LA ESTRUCTURA ANATÓMICA EN LA PERMEABILIDAD ESPECIFICA TRANSVERSAL AL GAS DEL PINO RADIATA. Maderas, Cienc. tecnol. [online]. 2004, vol.6, n.1, pp.33-44. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2004000100003.

The specific permeability of wood depends basically on the space available for fluid flow through its microstructure. The objective of this work was to determine the relationships between anatomical features of radiata pine (Pinus radiata D. Don) wood (growth rings width; tracheids diameter and frequency, cell wall thickness; resin canals frequency; diameter of the bordered pits chamber and Margo) and the transverse gas permeability. The type of wood (juvenile and mature wood) and the direction of flow (radial and tangential) were considered as the variables in the experimental design. The results obtained show that the features studied result in multiple regression equations of transversal specific gas permeability of radiata pine with coefficients of determination of 97% and higher. For mature wood, the radial and tangential specific gas permeabilities are linearly correlated to earlywood tracheids diameter (r=0.68) and latewood tracheids frequency (r=0.75). Significant differences were found between tangential gas specific permeability measured in juvenile (0.5 x 10^-14 m²) and mature wood (1.4 x 10^-14 m²)

Palabras clave : transverse specific permeability; wood anatomy; radiata pine.