Abstract
Recent research is underway to study cork oak (Quercus suber L.) wood potential for production of wood components. A total of 35 stems of young and mature cork oaks were sampled, live sawn into flitches, scanned using VTT’s WoodCIM®, and the measured data computed by VTT’s PuuPilot software, allowing stem 3D reconstruction. Sawing simulations were run for 0.5 m and 1 m logs and the whole stem. Sawn products were (1) planks, (2) parquet, (3) lamparquet, and (4) external component of multilayer planks. Cork oak stems showed a moderate to small taper (mean 24 mm/m). Curviness varied between straight to significantly crooked stems (mean value 40 mm) Batch yields for the tested products ranged 25–43% and 37–50% for 0.5 m logs of young and mature trees, respectively; for 1 m logs, batch yields ranged 19–41% and 25–54%. When using the whole stem, batch yields were lower, ranging 11–38% and 15–50%. Higher yields were obtained for all log lengths and samples for production of lamparquet, parquet, and multilayer component.
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References
Björklund L (1999) Identifying heartwood-rich stands or stems of Pinus sylvestris by using inventory data. Silva Fennica 33(2):119–129
Hallock H, Stern AR, Lewis DW (1978) Is there a “best” sawing method? Research Paper FPL-280. USDA Forest Service, Forest Products Laboratory, 11 pp
Ikonen V-P, Kellomäki S, Peltola H (2003) Linking tree stem properties of Scots pine (Pinus sylvestris L.) to sawn timber properties through simulated sawing. For Ecol Manag 174:251–263
Knapic S, Pereira H (2005) Within-tree variation of heartwood and ring width in Maritime pine (Pinus pinaster Ait.). For Ecol Manag 210:81–89
Knapic S, Louzada JL, Leal S, Pereira H (2007) Radial variation of wood density components and ring width in cork oak trees. Ann For Sci 64(2):211–218
Knapic S, Louzada JL, Leal S, Pereira H (2008) Within and between-tree variation of wood density components in cork oak trees in two sites in Portugal. Forestry 81:465–473
Leal S, Sousa VB, Pereira H (2006) Within and between-tree variation in the biometry of wood rays and fibres of cork oak (Quercus suber L.). Wood Sci Technol 40(7):585–597
Leban JM, Duchanois G (1990) SIMQUA: a simulation software for wood quality. Ann des Sci For 47:483–493
Maness TC, Lin Y (1995) The influence of sawkerf and target size reductions on sawmill revenue and volume recovery. For Prod J 45(11/12):43–50
Oja J (1997) Measuring knots and resin pockets in CT-images of Norway spruce. Division of Wood Technology, University of Technology, Luleå, Licenciate thesis, Skellefteå, p 6
Pereira H (2007) Cork: Biology, Production and Uses. Elsevier, Amsterdam
Pereira H, Tomé M (2004) Cork oak. In: Burley J (ed) Encyclopedia of forest sciences. Elsevier Ltd, Oxford, pp 613–620
Pinto I, Pereira H, Usenius A (2002) Sawing simulation of Pinus pinaster Ait. In: Nepveu G (ed) Proceedings of 4th workshop in “Connection between Silviculture and wood quality through modelling approaches and simulation softwares”. British Columbia, INRA, Nancy
Pinto I, Pereira H, Usenius A (2003) Analysis of log shape and internal knots in twenty maritime pine (Pinus pinaster Ait.) stems based on visual scanning and computer aided reconstruction. Ann For Sci 60:137–144
Pinto I, Pereira H, Usenius A (2004) Heartwood and sapwood development within Maritime pine (Pinus pinaster Ait.) stems. Trees 18(3):284–294
Pinto I, Usenius A, Song T, Pereira H (2005) Sawing simulation of maritime pine (Pinus pinaster Ait.) stems for production of heartwood containing components. For Prod J 55(4):88–96
Richards DB (1973) Hardwood lumber yield by various simulated sawing methods. For Prod J 23(10):50–58
Schmoldt D, Li P, Araman P (1996) Interactive simulation of hardwood log veneer slicing using CT images. For Prod J 46(4):41–47
Song T (1987) Optimization of sawing decision making through computer simulation. Laboratory of mechanical wood technology, Helsinki University of Technology, Licenciate thesis, Espoo, p 109
Song T (1998) Tree stem construction model for “Improved spruce timber utilisation” project. VTTs Building Technology internal report. Helsinki, p 20
Sousa VB, Leal S, Quilhó T, Pereira H (2009) Characterization of cork oak (Quercus suber L.) wood anatomy. IAWA Journal 30(2):149–161
Todoroki CL (1994) Effect of edging and docking methods on volume and grade recoveries in the simulated production of flitches. Ann des Sci For 51:241–248
Todoroki CL (1996) Developments of the sawing simulation software AUTOSAW—linking wood properties, sawing and lumber end-use. In: Nepveu G (ed) Proceedings of the 2nd Workshop on Connection Between Silviculture and Wood Quality through Modelling Approaches and Simulation Softwares, South Africa, INRA, Nancy, pp 241-247
Usenius A (1999) Wood conversion chain optimisation. In: Nepveu G (ed) Proceedings of 3rd workshop on connection between Silviculture and wood quality through modelling approaches and simulation softwares. La Londe-Les-Maures, INRA, Nancy, pp 542-548
Usenius A (2000) WoodCIM®—Integrated planning and optimizing system for sawmilling industry. VTTs Building Technology internal report, p 8
Acknowledgments
This study was partially funded by the European project Suberwood (QLRT 2000-0701) within the fifth Research Framework, and the Portuguese project SOBRO (AGRO 523) within the AGRO and FEDER Programmes. Centro de Estudos Florestais is a research unit funded by FCT (Portuguese Science Foundation) within the POCTI-FEDER Programme. The first authors acknowledge additional funding granted by FCT under the programme POCI—2010.
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Communicated by T. Seifert.
An erratum to this article can be found at http://dx.doi.org/10.1007/s10342-011-0497-1
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Knapic, S., Seppä, I.P., Usenius, A. et al. Stem modeling and simulation of conversion of cork oak stems for quality wood products. Eur J Forest Res 130, 745–751 (2011). https://doi.org/10.1007/s10342-010-0467-z
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DOI: https://doi.org/10.1007/s10342-010-0467-z