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Articles by Heikki Pajuoja

Category : Research article

article id 144, category Research article
Markku Oikari, Kalle Kärhä, Teijo Palander, Heikki Pajuoja, Heikki Ovaskainen. (2010). Analyzing the views of wood harvesting professionals related to the approaches for increasing the cost-efficiency of wood harvesting from young stands. Silva Fennica vol. 44 no. 3 article id 144. https://doi.org/10.14214/sf.144
Keywords: cost-efficiency; energy wood; early thinnings; industrial roundwood; costs; gap analysis; opinion survey
Abstract | View details | Full text in PDF | Author Info
A lot of viable guidelines are currently available for more cost-effective harvesting of energy wood and industrial roundwood (i.e. pulpwood) from young stands. The study ranked the proposed potential approaches for increasing the cost-efficiency of small-diameter (d1.3 < 10 cm) energy wood and industrial roundwood harvesting from early thinnings. Research data, based on a total of 40 personal interviews, was collected in early 2008. The interviewees were divided into four wood harvesting professional groups: 1) Managers in wood procurement organizations, 2) Forest machine contractors, 3) Forest machine manufacturers and vendors, and 4) Wood harvesting researchers. In the opinion of the respondents, there is great potential to increase the cost-efficiency of wood harvesting through improving harvesting conditions (i.e. effective tending of seedling stands, delaying harvesting operations, and pre-clearance of dense undergrowth). The interviewees also underlined that harvesting methods can be rationalized, e.g. multiple-tree handling in industrial roundwood cuttings, crane scale measurement, integrated wood harvesting, and careful selection of stands for harvesting. The strong message given by the interviewees was that the education of forest machine operators must be made more effective in the future. There would be significant possibilities for cost savings in young stands, if methods and techniques with the most potential were utilized completely in wood harvesting.
  • Oikari, Karelwood, Kontiolahti, Finland E-mail: markku.oikari@karelwood.com (email)
  • Kärhä, Metsäteho Oy, Helsinki, Finland E-mail: kk@nn.fi
  • Palander, University of Eastern Finland, Faculty of Science and Forestry, Joensuu, Finland E-mail: tp@nn.fi
  • Pajuoja, Metsäteho Oy, Helsinki, Finland E-mail: hp@nn.fi
  • Ovaskainen, University of Eastern Finland, Faculty of Science and Forestry, Joensuu, Finland E-mail: ho@nn.fi
article id 658, category Research article
Muru Juurola, Pekka Ollonqvist, Heikki Pajuoja, Mikko Toropainen. (1999). Outcomes of forest improvement work in Finland. Silva Fennica vol. 33 no. 3 article id 658. https://doi.org/10.14214/sf.658
Keywords: forest policy; forest improvement work; subsidies; input-output method; allowable cut
Abstract | View details | Full text in PDF | Author Info
This paper discusses public subsidies aimed at intensifying timber production as an initial part of an evaluation of the profitability of forest investment subsidies in Finland. In many countries there are very few proper ex post evaluations of the forest policy instruments in economic terms. The scarcity of timber among users and their attempts to construct new forest policy are discussed first. The increments in annual growth and growing stock as well as its valuation are then evaluated. The final gross utility increments due to forestry investments are measured through their importance in the forest industry products. The direct and indirect changes in GDP are calculated by using the input-output method.
  • Juurola, The Finnish Forest Research Institute, Helsinki Research Centre, Unioninkatu 40 A, FIN-00170 Helsinki, Finland E-mail: mj@nn.fi
  • Ollonqvist, The Finnish Forest Research Institute, Helsinki Research Centre, Unioninkatu 40 A, FIN-00170 Helsinki, Finland E-mail: po@nn.fi
  • Pajuoja, The Finnish Forest Research Institute, Helsinki Research Centre, Unioninkatu 40 A, FIN-00170 Helsinki, Finland E-mail: heikki.pajuoja@metla.fi (email)
  • Toropainen, The Finnish Forest Research Institute, Helsinki Research Centre, Unioninkatu 40 A, FIN-00170 Helsinki, Finland E-mail: mt@nn.fi

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Repo T., Volanen V. et al. (2022) No difference in the maximum frost hardiness of .. Silva Fennica vol. 56 no. 2 article id 10620 (remove) | Edit comment
Laitila J., Lehtonen E. et al. (2016) Procurement costs of cereal straw and forest chi.. Silva Fennica vol. 50 no. 5 article id 1689 (remove) | Edit comment
Nikkanen T., (2001) Reproductive phenology in a Norway spruce seed o.. Silva Fennica vol. 35 no. 1 article id 602 (remove) | Edit comment
Hertz M., (1935) The early development of Norway spruce root system Acta Forestalia Fennica vol. 41 no. 3 article id 7316 (remove) | Edit comment
Järvinen O., Kuusela K. et al. (1977) Effects of modern forestry on the numbers of bre.. Silva Fennica vol. 11 no. 4 article id 4982 (remove) | Edit comment
Selochnik N. N., Pashenova N. V. et al. (2015) Ophiostomatoid fungi and their roles in Querc.. Silva Fennica vol. 49 no. 5 article id 1328 (remove) | Edit comment
Suominen O., (1963) Susceptibility of stands to devastation by snow... Silva Fennica vol. no. 112 article id 4707 (remove) | Edit comment
Finnish Society of Forest Science ., (1967) Forestry research in Finland and its further dev.. Silva Fennica vol. 1 no. 4 article id 4757 (remove) | Edit comment
Poso S., Paananen R. et al. (1987) Forest inventory by compartments using satellite.. Silva Fennica vol. 21 no. 1 article id 5307 (remove) | Edit comment
Coussement J. R., Steppe K. et al. (2018) A flexible geometric model for leaf shape descri.. Silva Fennica vol. 52 no. 2 article id 7740 (remove) | Edit comment
Ilvessalo Y., (1916) The growth of the dominant trees in Scots pine f.. Acta Forestalia Fennica vol. 6 no. 1 article id 7012 (remove) | Edit comment
Pietarinen J., (1987) Man and the forest Silva Fennica vol. 21 no. 4 article id 5322 (remove) | Edit comment
Keltikangas V., (1939) Value of forest land in the financial accounting.. Acta Forestalia Fennica vol. 47 no. 4 article id 7344 (remove) | Edit comment
Kellomäki S., (1977) Trails in guiding recreational activity in Helsi.. Silva Fennica vol. 11 no. 4 article id 4979 (remove) | Edit comment
Kellomäki S., Pohjapelto P. (1976) The distribution of throughfall in a virgin spru.. Silva Fennica vol. 10 no. 2 article id 4941 (remove) | Edit comment
Roitto Y., (1976) The economic transport unit size in roundwood to.. Acta Forestalia Fennica vol. 0 no. 153 article id 7587 (remove) | Edit comment
Puttonen P., (1988) Presentation report of evaluation group on fores.. Silva Fennica vol. 22 no. 4 article id 5365 (remove) | Edit comment
Mikola P., (1984) Selection system in timber harvesting in Finland Silva Fennica vol. 18 no. 3 article id 5220 (remove) | Edit comment
Lovén L., (1974) Regional landscape planning of forest areas Silva Fennica vol. 8 no. 3 article id 4906 (remove) | Edit comment
Lihtonen V., (1951) Large scale worksites Silva Fennica vol. no. 69 article id 4603 (remove) | Edit comment
Saastamoinen O., (1977) Economics of forest uses in Finnish Lapland. Silva Fennica vol. 11 no. 3 article id 4973 (remove) | Edit comment
Lukkala O. J., (1939) Forest management of forests in drained peatland.. Silva Fennica vol. no. 52 article id 4567 (remove) | Edit comment
Saari E., (1938) Calculating the annual financial performance of .. Silva Fennica vol. no. 46 article id 4528 (remove) | Edit comment
Kalela A., (1939) On meadows and meadow alike vegetation communiti.. Acta Forestalia Fennica vol. 48 no. 2 article id 7347 (remove) | Edit comment
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
Holopainen V., (1960) Central marketing of cellulose, with particular .. Acta Forestalia Fennica vol. 73 no. 2 article id 7124 (remove) | Edit comment
Solantie R., (1983) Concepts of continentality-oceanity and humidity.. Silva Fennica vol. 17 no. 1 article id 5178 (remove) | Edit comment
Jentsch A., Beierkuhnlein C. et al. (2002) Scale, the dynamic stability of forest ecosystem.. Silva Fennica vol. 36 no. 1 article id 570 (remove) | Edit comment
Tikka P. U. S., (1928) Observations on Norway spruce growth and develop.. Silva Fennica vol. 0 no. 10 article id 4451 (remove) | Edit comment
Mäkinen P., (2001) Competitive strategies applied by Finnish timber.. Silva Fennica vol. 35 no. 3 article id 589 (remove) | Edit comment
Lappi-Seppälä M., (1929) Studies on the slenderness of the pine Acta Forestalia Fennica vol. 34 no. 42 article id 7255 (remove) | Edit comment
Chantal M. d., Rita H. et al. (2009) Frost heaving of Picea abies seedlings as influe.. Silva Fennica vol. 43 no. 1 article id 214 (remove) | Edit comment
Ilvessalo L., (1926) Forest research work in Finland : the origins an.. Acta Forestalia Fennica vol. 31 no. 2 article id 7201 (remove) | Edit comment