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Variabilidade anatómica e da densidade da madeira de Quercus faginea em diferentes idades e condições ambientais
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Orientador(es)
Resumo(s)
The importance and valorization of the species that occur naturally in Portugal motivated the
present study to evaluate the properties, variability and the technological potential of the wood
of Quercus faginea Lam., commonly referred as Portuguese or Lusitanian oak.
Growth rings, heartwood development, anatomical characteristics of wood and bark and wood
density were studied at different ages and sites. The wood showed growth ring porosity, high
fibre and rays proportion and high wood density. The heartwood proportion was relatively high
and increased from the base to the top following the trunk profile. Sapwood thickness was
approximately constant. The fibre and multiseriate rays showed an increasing tendency towards
the bark as well as the mean earlywood vessels area. The ring width and wood density
decreased from pith to bark. The variation sources included age, trees and environmental
conditions. Site was responsible for the main variations followed by tree and cambial age. The
correlations between the studied variables showed that growth and wood quality might be
estimated namely with ring width.
The wood characterization and relative stem homogeneity allow exploitation of this species and
reinforce its role in forest diversity.
Descrição
Doutoramento em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia
Palavras-chave
Quercus faginea wood variability heartwood anatomy density
Contexto Educativo
Citação
Sousa, V.M.P.R.B. - Variabilidade anatómica e da densidade da madeira de Quercus faginea em diferentes idades e condições ambientais. Lisboa: ISA, 2013, 191 p.