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Matti Kärkkäinen (email)

Malli männyn, kuusen ja koivun puuaineen oksaisuudesta.

Kärkkäinen M. (1986). Malli männyn, kuusen ja koivun puuaineen oksaisuudesta. Silva Fennica vol. 20 no. 2 article id 5266. https://doi.org/10.14214/sf.a15445

English title: Model of knottiness of wood material in pine, spruce and birch

Abstract

A computer model was developed for predicting knottiness of wood material of Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) H. Karst.) and birch (Betula sp). The prediction included location of knots, their size and quality, i.e. if they are dead or living knots. The model suits best for tree species where branches are born at the base of shoots, in Finland such tree species is Scots pine.

The usefulness of the model was tested in the prediction of knots in wooden elements of joinery industry. According to the results, the shape of cross section affects the surface quality of elements. Especially useful is a quadratic cross section as it increases the probability to get a knotless surface.

The PDF includes an abstract in English.

Original keywords
kuusi; mänty; oksaisuus; rauduskoivu; hieskoivu; simulointi; aihion poikkileikkaus; puutavaran laatu

English keywords
Pinus sylvestris; Norway spruce; birch; Betula; Picea abies; Scots pine; simulation; knots; timber quality; knottiness

Published in 1986

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Available at https://doi.org/10.14214/sf.a15445 | Download PDF

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Lilja A., Kurkela T. et al. (1997) Nursery practices and management of fungal disea.. Silva Fennica vol. 31 no. 1 article id 5611
Maltamo M., (1997) Comparing basal area diameter distributions esti.. Silva Fennica vol. 31 no. 1 article id 5609
Beuker E., Kellomäki S. et al. (1996) Changes in wood production of Picea abies and Pi.. Silva Fennica vol. 30 no. 2–3 article id 5591
Vettenranta J., (1996) Effect of species composition on economic return.. Silva Fennica vol. 30 no. 1 article id 5574
Lindgren K., Lindgren D. (1996) Germinability of Norway spruce and Scots pine po.. Silva Fennica vol. 30 no. 1 article id 5571
Koistinen E., Valkonen S. (1993) Models for height development of Norway spruce a.. Silva Fennica vol. 27 no. 3 article id 5510
Kellomäki S., Kolström M. (1992) Computations on the management of seedling stand.. Silva Fennica vol. 26 no. 2 article id 5478
Hytönen J., (1992) Allelopathic potential of peatland plant species.. Silva Fennica vol. 26 no. 2 article id 5475
Nygren M., (1990) Variation in the seed mass of Scots pine and Nor.. Silva Fennica vol. 24 no. 1 article id 5410
Tomminen J., Nuorteva M. et al. (1989) Occurrence of the nematode Bursaphelenchus mucro.. Silva Fennica vol. 23 no. 4 article id 5389
Hänninen H., Pelkonen P. (1988) Effects of temperature on dormancy release in No.. Silva Fennica vol. 22 no. 3 article id 5357
Pukkala T., (1987) Effect of seed production on the annual growth o.. Silva Fennica vol. 21 no. 2 article id 5312
Pukkala T., (1987) Model for predicting the seed crop of Picea abie.. Silva Fennica vol. 21 no. 2 article id 5311
Pukkala T., (1987) Simulation model for natural regeneration of Pin.. Silva Fennica vol. 21 no. 1 article id 5305
Kärkkäinen M., (1986) Value relations of Scots pine and Norway spruce .. Silva Fennica vol. 20 no. 2 article id 5267
Parviainen J., (1985) Growth of young Scots pine, Norway spruce, siber.. Silva Fennica vol. 19 no. 4 article id 5249
Kärkkäinen M., Halinen M. (1985) Reappraisal of minimum requirements of Scots pin.. Silva Fennica vol. 19 no. 3 article id 5246
Heikurainen L., (1985) The influence of birch nurse crop (Betula pubesc.. Silva Fennica vol. 19 no. 1 article id 5233
Pohtila E., Pohjola T. (1983) Results from the reforestation experiment on plo.. Silva Fennica vol. 17 no. 3 article id 5188
Soikkeli S., (1981) The types of ultrastructural injuries in conifer.. Silva Fennica vol. 15 no. 4 article id 5136
Ollinmaa P. J., (1981) Physical properties of wood growing on drained s.. Silva Fennica vol. 15 no. 3 article id 5128
Jokinen R., (1980) Estimation of growth response achieved through f.. Silva Fennica vol. 14 no. 3 article id 5081
Luukkanen O., Johansson S. (1980) Flower induction by exogenous plant hormones in .. Silva Fennica vol. 14 no. 1 article id 5070
Mikola J., (1980) The effect of seed size and duration of growth o.. Silva Fennica vol. 14 no. 1 article id 5069
Niiranen J., (1980) Methods used in cutting propagation of forest tr.. Silva Fennica vol. 14 no. 1 article id 5065
Velling P., (1980) Variation in the density of wood of different Sc.. Silva Fennica vol. 14 no. 1 article id 5063
Huttunen S., (1978) The effects of air pollution on provenances of S.. Silva Fennica vol. 12 no. 1 article id 4983
Mäkelä M., (1977) Calculating the basic density of whole tree- and.. Silva Fennica vol. 11 no. 2 article id 4970
Lehtiniemi T., (1977) Factors affecting gamma-irradiation sensitivity .. Silva Fennica vol. 11 no. 1 article id 4963
Kärkkäinen M., (1976) Density and moisture content of wood and bark, a.. Silva Fennica vol. 10 no. 3 article id 4948
Kapustinskaité T., (1975) Ash content of peatland soils and stand growth i.. Silva Fennica vol. 9 no. 3 article id 4924
Luukkanen O., (1973) Observations on CO2 exchange in open pollinated .. Silva Fennica vol. 7 no. 4 article id 4888
Kärkkäinen M., (1972) The proportion of heartwood in Norway spruce (Pi.. Silva Fennica vol. 6 no. 3 article id 4872
Pohtila E., (1972) Effect of fine-grounded copper rock phosphate pl.. Silva Fennica vol. 6 no. 1 article id 4859
Kozubov G. M., (1971) Electron microscopic studies in the development .. Silva Fennica vol. 5 no. 4 article id 4854
Luukkanen O., Räsänen P. K. et al. (1971) The use of needle colour in predicting growth an.. Silva Fennica vol. 5 no. 4 article id 4853
Mannerkoski H., (1971) Effect of fertilization on the initial developme.. Silva Fennica vol. 5 no. 2 article id 4841
Heikurainen L., Ouni J. (1970) Height growth of seedling stands growing on peat.. Silva Fennica vol. 4 no. 2 article id 4817
Löyttyniemi K., (1969) The effect of treatment of Scots pine and Norway.. Silva Fennica vol. 3 no. 3 article id 4803
Leikola M., Pylkkö P. (1969) Influence of stand density on the minimum temper.. Silva Fennica vol. 3 no. 1 article id 4784
Eklund B., (1967) Annual variation of increment in Scots pine and .. Silva Fennica vol. 1 no. 4 article id 4756
Schalin I., (1967) Microfungi in the humus layer of pine, spruce an.. Silva Fennica vol. 1 no. 2 article id 4745
Päivänen J., (1966) Distribution of rainfall in different types of f.. Silva Fennica vol. no. 119 article id 4732
Lähde E., (1966) Experiments on the decomposition rate of cellulo.. Silva Fennica vol. no. 119 article id 4730
Tamm C. O., (1965) Some experiences from forest fertilization trial.. Silva Fennica vol. no. 117 article id 4725
Jamalainen E. A., (1961) Damage by low-temperature parasitic fungi on con.. Silva Fennica vol. 0 no. 108 article id 4703
Kolehmainen V. A., (1955) Effect of prescribed burning in the forest regen.. Silva Fennica vol. no. 85 article id 4644
Kalliola R., (1942) Vegetation and flora in the Pyhätunturi National.. Silva Fennica vol. no. 59 article id 4579
Keltikangas M., Tiililä P. (1968) The economic sequence of silver birch (Betula pe.. Acta Forestalia Fennica vol. 82 no. 5 article id 7178
Lähde E., (1966) Studies on the respiration rate in the different.. Acta Forestalia Fennica vol. 81 no. 8 article id 7173
Ilvessalo Y., (1967) The development of natural normal forest stands .. Acta Forestalia Fennica vol. 81 no. 5 article id 7170
Hårdh J. E., (1966) Trials with carbon dioxide, light and growth sub.. Acta Forestalia Fennica vol. 81 no. 1 article id 7166
Heiskanen V., (1965) Relation between the development of the early ag.. Acta Forestalia Fennica vol. 80 no. 2 article id 7164
Huuri O., (1965) The effects of storage in cones on the viability.. Acta Forestalia Fennica vol. 78 no. 5 article id 7158
Heikurainen L., Seppälä K. (1965) Regionality in stand increment and its dependenc.. Acta Forestalia Fennica vol. 78 no. 4 article id 7157
Kallio T., (1965) Studies on the biology of distribution and possi.. Acta Forestalia Fennica vol. 78 no. 3 article id 7156
Laiho O., Mikola P. (1964) Studies on the effect of some eradicants on myco.. Acta Forestalia Fennica vol. 77 no. 2 article id 7150
Yli-Vakkuri P., (1961) Experimental studies on the emergence and develo.. Acta Forestalia Fennica vol. 75 no. 1 article id 7135
Yli-Vakkuri P., (1961) Emergence and initial development of tree seedli.. Acta Forestalia Fennica vol. 74 no. 1 article id 7128
Ollinmaa P. J., (1960) Physical properties of wood growing on drained p.. Acta Forestalia Fennica vol. 72 no. 2 article id 7119
Ollinmaa P. J., (1959) Study on reaction wood Acta Forestalia Fennica vol. 72 no. 1 article id 7118
Kallio K., (1960) The mensurational density of a stand in estimati.. Acta Forestalia Fennica vol. 71 no. 7 article id 7116
Yli-Vakkuri P., (1960) Snow cover and ground frost in Finnish forests Acta Forestalia Fennica vol. 71 no. 5 article id 7114
Yli-Vakkuri P., (1959) On machines for abrading seed wings and their in.. Acta Forestalia Fennica vol. 68 no. 4 article id 7486
Heikurainen L., (1958) Root systems of mixed forest in drained peatlands Acta Forestalia Fennica vol. 67 no. 2 article id 7476
Rummukainen U., (1954) Estimation of Scots pine and Norway spruce cone .. Acta Forestalia Fennica vol. 61 no. 20 article id 7432
Kalela E. K., (1949) On the horizontal roots in Scots pine and Norway.. Acta Forestalia Fennica vol. 57 no. 2 article id 7398
Lukkala O. J., (1942) Measurements of rainfall in different kinds of f.. Acta Forestalia Fennica vol. 50 no. 23 article id 7376
Lappi-Seppälä M., (1942) Growth of Siberian larch in mixed stands in stat.. Acta Forestalia Fennica vol. 50 no. 8 article id 7361
Aaltonen V. T., (1942) Growth studies on tree seedlings Acta Forestalia Fennica vol. 50 no. 6 article id 7359
Wegelius Th., (1939) The presence and properties of knots in finnish .. Acta Forestalia Fennica vol. 48 no. 1 article id 7346
Sarvas R., (1937) Natural regeneration of burned areas. Forest bio.. Acta Forestalia Fennica vol. 46 no. 1 article id 7336
Laitakari E., (1935) Studies on the influence of stand and forest sit.. Acta Forestalia Fennica vol. 41 no. 4 article id 7317
Hertz M., (1929) Observations on annual and daily cycles in the h.. Acta Forestalia Fennica vol. 34 no. 18 article id 7231
Ilvessalo Y., (1920) Growth and yield tables for the Scots pine, Norw.. Acta Forestalia Fennica vol. 15 no. 4 article id 7042
Finér L., (1989) Biomass and nutrient cycle in fertilized and unf.. Acta Forestalia Fennica vol. 0 no. 208 article id 7655
Henttonen H., (1984) The dependence of annual ring indices on some cl.. Acta Forestalia Fennica vol. 0 no. 186 article id 7633
Nyyssönen A., Ojansuu R. (1982) Assessment of timber assortments, value and valu.. Acta Forestalia Fennica vol. 0 no. 179 article id 7626
Thammincha S., (1981) Climatic variation in radial growth of Scots pin.. Acta Forestalia Fennica vol. 0 no. 171 article id 7618
Nyyssönen A., Mielikäinen K. (1978) Estimation of stand increment Acta Forestalia Fennica vol. 0 no. 163 article id 7597
Kilkki P., Siitonen M. (1975) Simulation of artificial stands and derivation o.. Acta Forestalia Fennica vol. 0 no. 145 article id 7579
Brown R. T., Mikola P. (1974) The influence of fruticose soil lichens upon the.. Acta Forestalia Fennica vol. 0 no. 141 article id 7575
Seppälä K., (1969) Post-drainage growth rate of Norway spruce and S.. Acta Forestalia Fennica vol. 0 no. 93 article id 7611
Leikola M., (1969) The influence of environmental factors on the di.. Acta Forestalia Fennica vol. 0 no. 92 article id 7610
Häggström B., Lutter R. et al. (2023) Effect of arginine-phosphate addition on early s.. Silva Fennica vol. 57 no. 2 article id 22013
Goude M., Nilsson U. et al. (2022) Comparing basal area growth models for Norway sp.. Silva Fennica vol. 56 no. 2 article id 10707
Dahlgren Lidman F., Holmström E. et al. (2021) Management of spontaneously regenerated mixed st.. Silva Fennica vol. 55 no. 4 article id 10485
Pikkarainen L., Luoranen J. et al. (2020) Comparison of planting success in one-year-old s.. Silva Fennica vol. 54 no. 1 article id 10243
Repola J., Hökkä H. et al. (2018) Models for diameter and height growth of Scots p.. Silva Fennica vol. 52 no. 5 article id 10055
Becker H., Aosaar J. et al. (2018) Annual net nitrogen mineralization and litter fl.. Silva Fennica vol. 52 no. 4 article id 10013
Egbäck S., Karlsson B. et al. (2018) Effects of phenotypic selection on height-diamet.. Silva Fennica vol. 52 no. 2 article id 7738
Egbäck S., Nilsson U. et al. (2017) Modeling early height growth in trials of geneti.. Silva Fennica vol. 51 no. 3 article id 5662
Fahlvik N., Ekö P. M. et al. (2015) Effects of precommercial thinning strategies on .. Silva Fennica vol. 49 no. 3 article id 1302
Saarsalmi A., Tamminen P. et al. (2014) Effects of long-term fertilisation on soil prope.. Silva Fennica vol. 48 no. 1 article id 989
Gunulf A., Mc Carthy R. et al. (2012) Control efficacy of stump treatment and influenc.. Silva Fennica vol. 46 no. 5 article id 917
Nilsson U., Elfving B. et al. (2012) Productivity of Norway spruce compared to Scots .. Silva Fennica vol. 46 no. 2 article id 54
Niemistö P., Korpunen H. et al. (2012) Impact and productivity of harvesting while reta.. Silva Fennica vol. 46 no. 1 article id 67
Ikonen V.-P., Kellomäki S. et al. (2009) Sawn timber properties of Scots pine as affected.. Silva Fennica vol. 43 no. 3 article id 197
Kankaanhuhta V., Saksa T. et al. (2009) Variation in the results of Norway spruce planti.. Silva Fennica vol. 43 no. 1 article id 217
Repola J., (2006) Models for vertical wood density of Scots pine, .. Silva Fennica vol. 40 no. 4 article id 322
Schmitt U., Jalkanen R. et al. (2004) Cambium dynamics of Pinus sylvestris and Betula .. Silva Fennica vol. 38 no. 2 article id 426
Jacobson S., (2003) Addition of stabilized wood ashes to Swedish con.. Silva Fennica vol. 37 no. 4 article id 483
Chantal M. d., Eskola L. et al. (2003) Early establishment of Pinus sylvestris and Pice.. Silva Fennica vol. 37 no. 1 article id 509
Lindén M., Vollbrecht G. (2002) Sensitivity of Picea abies to butt rot in pure s.. Silva Fennica vol. 36 no. 4 article id 519
Kangas A., Maltamo M. (2000) Percentile based basal area diameter distributio.. Silva Fennica vol. 34 no. 4 article id 619