A contribution to the knowledge of Scots pine (Pinus sylvestris L.) stem shape
M. Křepela, J. Sequens, D. Zahradníkhttps://doi.org/10.17221/4617-JFSCitation:Křepela M., Sequens J., Zahradník D. (2004): A contribution to the knowledge of Scots pine (Pinus sylvestris L.) stem shape. J. For. Sci., 50: 211-218.
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