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- Title
Propiedades físicas de la madera de ejemplares jóvenes de Alnus glutinosa (L.) Gaertn.
- Authors
Muñoz, Guillermo Riesco; Campos, Ana María Rodríguez
- Abstract
A group of young alders was felled in a remote area of Galicia (northwest Spain), for analysis of wood properties. The following mean values of different properties were obtained on small defect-free specimens of wood (airdry density: 547 kg/m3; basic density: 440 kg/m3; volumetric shrinkage: 14.3 %; volumetric shrinkage coefficient: 0.26 %). The wood was moderately heavy and stable. Highly significant inter-tree variation was observed for all properties considered. This variation cannot be attributed to environmental conditions, which were almost constant for all sampled trees. The variations in the characteristics of the wood were not significantly affected by the tree dimensions. Only the age of the trees significantly affected the mean values of some wood properties. Therefore, the inter-tree variation in wood properties was mainly due to genetic causes, which suggests that this species should be protected as a source of tree diversity. A model is proposed for predicting the variation in basic density along the stem (R2 = 0.62; E = 6·10-5 %; RMSE = 5.1 %). The general validity of the model for all sampled individuals up to six meters in the stems enables calculation of the amount of dry matter in the two or three lower commercial logs, from the harvested volume.
- Subjects
GALICIA (Spain : Region); SPAIN; WOOD; SPECIFIC gravity; DENSITY; VOLUMETRIC analysis; PLANT genetics
- Publication
Recursos Rurais, 2010, Issue 6, p15
- ISSN
1885-5547
- Publication type
Article