Physical properties of thinning wood in maritime pine (<Emphasis Type="Italic">Pinus pinaster</Emphasis> Ait.): case study |
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Authors: | Guillermo Riesco Muñoz Marcos Barrio Anta |
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Institution: | 1.Departamento de Ingeniería Agroforestal, Escuela Politécnica Superior,Universidad de Santiago de Compostela,Lugo,Spain;2.Departamento de Biología de Organismos y Sistemas, Escuela Universitaria de Ingenierías Técnicas,Universidad de Oviedo,Mieres,Spain |
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Abstract: | Forty young trees from a stand of maritime pine in the southern mountains of Galicia, Spain (42°21′N: 8°01′W) were felled
to obtain the material required for studying density and shrinkage in clear and small wood specimens. The wood ranged from
light to moderately heavy, and the dimensions remained reasonably stable with varying moisture content. The results were consistent
with those obtained in previous studies of adult trees, except for axial shrinkage, which was very high and variable in this
study. The between-tree variation in wood properties was high considering that the sampled trees came from the same stand.
However, the relationships between density and height in the stem were similar in all trees. A general model for the prediction
of volumetric shrinkage was developed, with oven-dry density and ring width as predictor variables. The model is feasible
for estimation of wood quality in living trees. It is applicable to tree selection for thinning and for genetic improvement
of stock. |
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