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The influence of wind on spiral grain formation in conifer trees
Växjö University, Faculty of Mathematics/Science/Technology, Institutionen för biovetenskaper och processteknik.
Växjö University, Faculty of Mathematics/Science/Technology, Institutionen för industriella produktionssystem.
2000 (English)In: Trees, ISSN 0931-1890, E-ISSN 1432-2285, Vol. 14, p. 324-328Article in journal (Refereed) Published
Abstract [en]

The correlation between spiral grain formationand crown asymmetry was investigated in 18 Scots pine(Pinus sylvestris L.) and 17 Norway spruce [Picea abies(L.) Karst.] trees selected from clones of each speciesgrowing in the south of Sweden. The angle between thelongitudinal direction of the tracheids in the outermostyear ring compared to the longitudinal direction of thestem was measured by scribing lines which followed thedirection of the tracheids. The crown asymmetry wasmeasured by taking photographs of the trees followed bya simple picture analysis of the tree. Wind data for thegrowing seasons of 1997 and 1998 were obtained fromthe Swedish Meteorological and Hydrological Institute.The results showed a significant correlation between theangle of the tracheids compared to the stem longitudinaldirection going from a left-handed angle if the trees hada crown projected to the north towards a right-handedangle the more the crown projects to the south.

Place, publisher, year, edition, pages
Springer, 2000. Vol. 14, p. 324-328
Keywords [en]
Spiral grain, Crown asymmetry, Grain angle, Twisting, Wind
National Category
Forest Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-33834DOI: 10.1007/s004680050225OAI: oai:DiVA.org:lnu-33834DiVA, id: diva2:711632
Available from: 2014-04-10 Created: 2014-04-10 Last updated: 2017-12-05Bibliographically approved

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Säll, Harald

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  • apa
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  • vancouver
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
  • text
  • asciidoc
  • rtf