Variation of some wood macroscopic properties along the stem of Acacia melanoxylon R. Br. adult trees in Portugal

  • A. Santos Universidade da Beira Interior, Covilhã.
  • R. Simões Universidade da Beira Interior, Covilhã.
  • M. Tavares Instituto Nacional de Investigação Agrária e Veterinária, Oeiras.

Abstract

Aim of the study: The aim of the study is to assess the variation of pith eccentricity, heartwood proportion, latewood percentage and basic wood density along the stem of 45-year-old A. melanoxylon trees collected in four sites of Portugal, and investigate the eventual relationship between these variables.

Area of study: Sites covering littoral north, mid interior north and centre interior of Portugal.

Materials and methods: Four sites and five trees per site were selected in the Acacia melanoxylon Portuguese forest.

One wood sample at each of six height levels per tree was collected in order to evaluate its basic density, pith eccentricity, heartwood and latewood proportions.

Main results: The high variability of the wood macroscopic properties among trees from the same site regarding to the variation of the corresponding average properties along the stem is a key characteristic of the experimental data.

As a consequence, a multiple linear regression model tested was not able to properly explain the wood basic density variation of the 120 wood samples analysed. In spite of this, the following trends could be recognized: (i) excluding the base level, wood basic density moderately increased with tree level; (ii) latewood proportion followed similar behaviour; (iii) pith eccentricity was low; (iv) heartwood proportion decreased markedly with tree height, from 70% at the base to 7% at the top.

Research highlights: The high basic density, the relatively low variability along the stem and the low pith eccentricity enable us to anticipate good performance as raw material for the wood industry.

Key words: Acacia melanoxylon; basic density; earlywood; latewood; heartwood; sapwood; pith eccentricity.

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Author Biography

M. Tavares, Instituto Nacional de Investigação Agrária e Veterinária, Oeiras.
L-INIA

References

Anjos O, Santos, A., Simões R. 2011. Effect of Acacia melanoxylon.fibre morphology on papermaking potential, Appita Journal 64(2), 185-191.

Anonymous. 2010. Inventário Florestal Nacional. Portugal Continental. IFN5 2005-2006. Autoridade Florestal Nacional. Lisboa, Portugal.

Adamopoulos S, Milios E, Doganos D, Bistinas I. 2009. Ring width, latewood proportion and dry density in stems of Pinus brutia Ten. European Journal Wood Products, 67, 471-477.

Akachuku AE, Abolarin ADO. 1989. Variations in pith eccentricity and ring width in teak (Tectona grandis L. F.), Trees 3, 111-116. http://dx.doi.org/10.1007/BF01021074

Balodis V. 1980. Assessment of the pulpwood quality of forest resources. CSIRO Division Chemistry Technology Research Revue, 13-32.

CISUC/LPC – Centro de Informática e Sistemas da Universidade de Coimbra. Laboratório de Percepção Computacional, 2001. Wood Ring Analysis® software.

Clark N. 2001. Longitudinal density variation in irrigated hardwoods. Appita Journal, 54(1), 49-53.

Downes G, Hudson I, Raymond C, Dean G, Michell A, Schimleck L, et al. (1997). Sampling plantation eucalypts for wood and fibre properties. Publishing CSIRO –Edited by Alexa Cloud-Guest. Australia. PMCid:PMC1722099

Goulart M, Haselein C, Hoppe J, Farias J, Pauleski D. 2003. Massa específica básica e massa seca de madeira de Eucalyptus grandis sob o efeito do espaçamento de plantio e da posição axial no tronco. Ciência Florestal 13, 167-175.

Hillis E, Brown A. 1984. Eucalyptus for wood production. 434pp. Adelaide, Australia. CSIRO Griffin Press.

Igartúa DV, Monteoliva S. 2009. Densidad básica de la madera de Acacia melanoxylon R. Br en relación con la altura de muestreo, el árbol y el sitio. Inv Agrar - Sist Recursos Fores 18(1), 101-110.

Igartúa DV, Monteoliva S, Piter JC. 2009. Estúdio de algunas propriedades físicas de la madera de Acacia melanoxylon en Argentina. Maderas, Ciência e Tecnologia 11(1), 3-18.

Knapic S, Tavares F, Pereira H. 2006. Heartwood and sapwood variation in Acacia melanoxylon R. Br. trees in Portugal. Forestry 79(4), 371-380. http://dx.doi.org/10.1093/forestry/cpl010

Lourenço A, Baptista I, Gominho J, Pereira H. 2008. The influence of heartwood on the pulping properties of Acacia melanoxylon wood. J Wood Sci 54, 464-469. http://dx.doi.org/10.1007/s10086-008-0972-6

Panshin J, DeZeeuw C. 1980. Textbook of wood technology. 643 pp. New York. 4th edition. McGraw Hill.

Playford J, Bell C, Moran GF. 1991. Genetic variation of Acacia melanoxylon. In: Advances in tropical acacia research, ACIAR proceedings No. 35. (Turnbull JW, ed). Bangkok, Thailand, 11-15 February. pp. 92-93.

Quilhó T, Pereira H. 2001. Within and between tree variation of bark content and wood density of Eucalyptus globulus in commercial plantations. IAWA Journal 22 (3), 255-265. http://dx.doi.org/10.1163/22941932-90000283

Raymond CA, Muneri A. 2001. Nondestructive sampling of Eucalyptus globulus and E. nitens for wood properties. I. Basic density. Wood Sci. Tech. 35, 27-39. http://dx.doi.org/10.1007/s002260000078

Saint-André L, Leban J-M. 2001. A model for the position and ring eccentricity in transverse sections of Norway spruce logs. Holz als Roh- und Werkstoff 59, 137-144. http://dx.doi.org/10.1007/s001070050485

Santos A, Anjos O, Simões R. 2006. Papermaking potential of Acacia dealbata and Acacia melanoxylon. Appita Journal 59(1), 58-64.

Santos A, Teixeira A, Anjos O, Simões R, Nunes L, Machado J, Tavares M. 2007. Utilização potencial do lenho de Acacia melanoxylon a crescer em povoamentos puros ou mistos com Pinus pinaster pela indústria florestal portuguesa. Silva Lusitana 15(1), 57-77.

Sardinha R. 1974. Variation in density and some structural features of wood of Eucalyptus saligna. Ph. D Thesis. University of Oxford. Sm. Frame. Angola.

Searle SD, Owen JV. 2005 Variation in basic wood density and percentage heartwood in temperate Australian Acacia species. Australian Forestry 68 (2): 126-136. http://dx.doi.org/10.1080/00049158.2005.10674956

Silva JC, Borralho NMG, Araújo JA, Vaillancourt RE, Potts BM. 2009. Genetic parameters for growth, wood density and pulp yield in Eucalyptus globulus. Tree Genet Genomes 5, 291-305. http://dx.doi.org/10.1007/s11295-008-0174-9

StatSoft, Inc. 2003. STATISTICA®. Data analysis software system. Version 6.1.

TAPPI. 1995. Basic density and moisture content of pulpwood. Test methods: T 258 om-94, Atlanta, USA.

Tavares M, Campos J, Silva C, Caetano F. 1999. Estratégias de invasão das dunas do litoral pelas Acacia dealbata. A. melanoxylon e A. longifolia. Proc 1º Encontro sobre Invasoras lenhosas, Gerês, Portugal, vol 1, pp. 42-49.

Trugilho P, Lima J, Mendes L. 1996. Influência da idade nas características físico-químicas e anatómicas da madeira de Eucalyptus saligna. CERNE 2(1), 94-111.

Wimmer R, Downes GM, Evans R, Rasmussen G, French J. 2002. Direct effects of wood characteristics on pulp and handsheet properties of Eucalyptus globulus. Holzforschung 56, 244-252. http://dx.doi.org/10.1515/HF.2002.040

Wimmer R, Downes GM, Evans R, French J. 2008. Effects of site on fibre, kraft pulp and handsheet properties of Eucalyptus globulus. Annals Forest Science 65, 602. http://dx.doi.org/10.1051/forest:2008039

Published
2013-12-01
How to Cite
Santos, A., Simões, R., & Tavares, M. (2013). Variation of some wood macroscopic properties along the stem of Acacia melanoxylon R. Br. adult trees in Portugal. Forest Systems, 22(3), 463-470. https://doi.org/10.5424/fs/2013223-02421
Section
Research Articles