J. For. Sci., 2004, 50(5):211-218 | DOI: 10.17221/4617-JFS

A contribution to the knowledge of Scots pine (Pinus sylvestris L.) stem shape

M. Křepela, J. Sequens, D. Zahradník
Faculty of Forestry and Environment, Czech University of Agriculture, Prague, Czech Republic

This is a study on the evaluation of stem shape in Scots pine. The experiments were carried out on 430 stems without bark, taken from 30 fully analysed sample trees that grew in 5 different locations in the Czech Republic. Generalized Procrustes analysis was used as the method of study. The stems were described by the use of landmarks. Full Procrustes coordinates were calculated for all stems, and the full Procrustes mean shape was set for individual sample trees, locations and all stems. For Procrustes tangent coordinates, variability was examined using the method of principal components. The two most important principal components were diagrammatized and described. Furthermore, statistical tests of mean shape vectors for individual locations were carried out.

Keywords: Scots pine (Pinus sylvestris L.); stem shape; Procrustes analysis; principal components analysis

Published: May 31, 2004  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Křepela M, Sequens J, Zahradník D. A contribution to the knowledge of Scots pine (Pinus sylvestris L.) stem shape. J. For. Sci. 2004;50(5):211-218. doi: 10.17221/4617-JFS.
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. DRYDEN I.L., MARDIA K.V., 1998. Statistical shape analysis. Chichester, New York, Weinheim, Brisbane, Singapore, Toronto, John Wiley & Sons: 345.
    2. DRYDEN I. L., 2000. Statistical shape routines. University of Nottingham. http://www.maths.nottingham.ac.uk/personal/ild/Shape-R/Shape-R.html.
    3. HAVRÁNEK T., 1993. Statistika pro biologické a lékařské vědy. Praha, Academia: 478.
    4. KŘEPELA M., 2002. Point distribution form model for spruce stems (Picea abies [L.] Karst.). J. For. Sci., 48: 150-155. Go to original source...
    5. KŘEPELA M., SEQUENS J., ZAHRADNÍK D., 2001. Dendrometric evaluation of stand structure and stem forms on Norway spruce (Picea abies [L.] Karst.) sample plots Doubravčice 1, 2, 3. J. For. Sci., 47: 419-427.
    6. MARDIA K.V., KENT J.T., BIBBY J.M., 1979. Multivariate Analysis. London, New York, Toronto, Sydney, San Francisco, Academic Press: 521.
    7. SEQUENS J., 1985. Ověření bonitního vějíře borových RT ČSSR 1980 na podkladě rozboru výškového růstu této dřeviny. Praha, VŠZ, Kostelec nad Č. lesy: 38.
    8. SEQUENS J.,1994. Bonitní vějíř a trendy výškového růstu borovice. Lesnictví-Forestry, 40: 550-556.

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content