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Publication
Alternative species for the forest industry as forms of diversify the landscape
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Advisor(s)
Abstract(s)
Together the forest and industrial activities within the Portuguese forest sector have a
great importance in the national economy. The most used wood species in Portugal for industry
(wood panel, sawmill, wood crates) are pine and eucalypt, which leads to extreme dependence
and competition between the various industries for the same material, and thus unsustainable
pressure on these forest resources. This is one of the causes of the decrease of pinewood area in
recent years. On the other hand, this dependence leads to extensive areas of forest monocultures
and, subsequently, increased risk of the forest fire propagation.
This work intends to stimulate the diversification of the wood products used in the
national industry of pulp and to provide a pulp with appropriate characteristics for incorporation
as fibber for paper reinforcement. At the level of forest producers, the use of this prime-material
would increase competitiveness among tree species and revitalization of less favoured rural areas
and, turning them into a possible solution for the lack of wood and an incentive to the
reforestation of these areas.
Wood from species Cupressus sempervirens and Cupressus arizonica, Acacia delbata
and Acacia melanoxylon were analysed. Content of extractives and of Klason lignin, fibre length
and coarseness were determined. Representative wood samples from Pinus pinaster grown in
Portugal and from Pinus sylvestris grown in Finland were used as reference. The wood from
Cupressus sempervirens showed lower Klason lignin and a fibre quality that appears to be more
adequate to pulp and paper.
Acacia species, with their relatively short, flexible and collapsible fibres, have potential
to produce papers with good relationships light scattering/tensile strength and smoothness/tensile
strength, at low energy consumption in refining. The studied acacia species showed slightly
better performance in pulping than the Eucalyptus globulus sample used as a comparison.
Description
Keywords
Cupressus Acacia Paper potential Diversification
Citation
SANTOS, A. [et al.] (2004 - Alternative species for the forest industry as forms of diversify the landscape. In Ibero-American Symposium on Forest Management and Economics, 2, Barcelona, 19 a 20 de Setembro.11 p.