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Articles by Lars Wilhelmsson

Category : Research article

article id 202, category Research article
Tuula Nuutinen, Antti Kilpeläinen, Hannu Hirvelä, Kari Härkönen, Veli-Pekka Ikonen, Reetta Lempinen, Heli Peltola, Lars Wilhelmsson, Seppo Kellomäki. (2009). Future wood and fibre sources – case North Karelia in eastern Finland. Silva Fennica vol. 43 no. 3 article id 202. https://doi.org/10.14214/sf.202
Keywords: National Forest Inventory; fibre length; wood density; proportion of latewood; forest scenario analysis
Abstract | View details | Full text in PDF | Author Info
Information on the potential wood supply is important for the wood industry. In this study, the future development of growing stock, cutting potential and wood properties corresponding to the regional scenario of North Karelian Forest Programme 2006–2010 was analysed. The simulations were performed by employing the Finnish MELA system together with the sample plot and tree data of the 9th Finnish National Forest Inventory (NFI9) as initial data for the simulations. Disc-based models for basic wood density, proportion of latewood and fibre length of Norway spruce and Scots pine in Sweden were calibrated and integrated into the MELA system. The wood properties at breast height of both harvested and standing trees were analysed in different strata (age, site type and cutting method) during the scenario period of 50 years (2002–2052). The average wood properties within the same strata varied only slightly over time. However, the results for different strata differed considerably. In general, wood density, fibre length and proportion of latewood increased, on average, as a function of tree age and along with a decrease in site fertility (excl. wood density and proportion of latewood in harvested Norway spruce in the first case and fibre length in the latter case for both species). For trees less than 80 years, properties in harvested trees were equal to or slightly greater than those of standing trees. The values for clear-cuttings were greater or equal to those of thinnings (excl. wood density and proportion of latewood in Norway spruce). The study demonstrates the value of model-based analyses utilising NFI tree measurements in regions that are considered to be sources of raw material.
  • Nuutinen, European Forest Institute, Torikatu 34, FI-80100 Joensuu, Finland E-mail: tuula.nuutinen@efi.int (email)
  • Kilpeläinen, University of Joensuu, Faculty of Forest Sciences, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: ak@nn.fi
  • Hirvelä, Finnish Forest Research Institute, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: hh@nn.fi
  • Härkönen, Finnish Forest Research Institute, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: kh@nn.fi
  • Ikonen, University of Joensuu, Faculty of Forest Sciences, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: vpi@nn.fi
  • Lempinen, Finnish Forest Research Institute, P.O. Box 68, FI-80101 Joensuu, Finland E-mail: rl@nn.fi
  • Peltola, University of Joensuu, Faculty of Forest Sciences, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: hp@nn.fi
  • Wilhelmsson, Skogforsk, Uppsala Science Park, SE-751 83 Uppsala, Sweden E-mail: lw@nn.fi
  • Kellomäki, University of Joensuu, Faculty of Forest Sciences, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: sk@nn.fi

Category : Commentary

article id 462, category Commentary
Jean-Michel Leban, Heli Peltola, Sanna Leinonen, Christine Todoroki, Sophie D'Amours, Barry Gardiner, Jim Goudie, Eini Lowell, Thomas Seifert, Erkki Verkasalo, Lars Wilhelmsson, Tuula Nuutinen. (2009). Preface. Silva Fennica vol. 43 no. 3 article id 462. https://doi.org/10.14214/sf.462
Abstract | View details | Full text in PDF | Author Info
The 6th IUFRO Workshop on Connection between Forest Resources and Wood Quality: Modelling Approaches and Simulation Software.
  • Leban, E-mail: jml@nn.fr (email)
  • Peltola, University of Eastern Finland, School of Forest Sciences, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: heli.peltola@uef.fi
  • Leinonen, E-mail: sl@nn.fi
  • Todoroki, E-mail: ct@nn.nz
  • D'Amours, E-mail: sda@nn.ca
  • Gardiner, E-mail: bg@nn.uk
  • Goudie, E-mail: jg@nn.ca
  • Lowell, E-mail: el@nn.us
  • Seifert, E-mail: ts@nn.de
  • Verkasalo, Finnish Forest Research Institute, Joensuu Unit, P.O. Box 68, FI-80101, Joensuu, Finland E-mail: erkki.verkasalo@metla.fi
  • Wilhelmsson, E-mail: lw@nn.se
  • Nuutinen, European Forest Institute, Torikatu 34, FI-80100 Joensuu, Finland E-mail: tuula.nuutinen@efi.int

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Légaré S., Bergeron Y. et al. (2002) Influence of forest composition on understory co.. Silva Fennica vol. 36 no. 1 article id 567 (remove) | Edit comment
Heikinheimo O., (1938) Thinning of forest stands Silva Fennica vol. no. 46 article id 4533 (remove) | Edit comment
Meen E., Nielsen A. et al. (2012) Forest stand modelling as a tool to predict perf.. Silva Fennica vol. 46 no. 4 article id 906 (remove) | Edit comment
Appelroth E., (1942) Requisite for periodical inventories of private .. Acta Forestalia Fennica vol. 50 no. 12 article id 7365 (remove) | Edit comment
Kumpu A., Peltoniemi M. et al. (2025) Soil carbon and nitrogen in unmanaged forests in.. Silva Fennica vol. 59 no. 3 article id 24072 (remove) | Edit comment
Eriksson G., (1991) Challenges for forest geneticists. Silva Fennica vol. 25 no. 4 article id 5465 (remove) | Edit comment
Stolpe N., (1954) Observations on floating, its organizations and .. Acta Forestalia Fennica vol. 61 no. 5 article id 7417 (remove) | Edit comment
Pallasmaa J., (1987) The architecture of the forest Silva Fennica vol. 21 no. 4 article id 5335 (remove) | Edit comment
Sierla V. O., (1933) Timber transportation of the floating associatio.. Acta Forestalia Fennica vol. 39 no. 1 article id 7272 (remove) | Edit comment
Starr M., Westman C. J. (1978) Easily extractable nutrients in the surface peat.. Silva Fennica vol. 12 no. 2 article id 4990 (remove) | Edit comment