Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description
The paper shows a possibility of using Bookstein coordinates for stem shape studies. Bookstein coordinates are simplified to stem shape diameters, for which tests of multidimensional normality, variance-covariance matrix homogeneity, equality of mean shape vectors and principal component calculation...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Czech Academy of Agricultural Sciences
2005-06-01
|
| Series: | Journal of Forest Science |
| Subjects: | |
| Online Access: | https://jfs.agriculturejournals.cz/artkey/jfs-200506-0002_possible-methods-of-norway-spruce-picea-abies-l-karst-stem-shape-description.php |
| _version_ | 1797898901934571520 |
|---|---|
| author | M. Křepela D. Zahradník J. Sequens |
| author_facet | M. Křepela D. Zahradník J. Sequens |
| author_sort | M. Křepela |
| collection | DOAJ |
| description | The paper shows a possibility of using Bookstein coordinates for stem shape studies. Bookstein coordinates are simplified to stem shape diameters, for which tests of multidimensional normality, variance-covariance matrix homogeneity, equality of mean shape vectors and principal component calculation are carried out in sample plots Doubravčice 1 and Štíhlice. Principal components are also calculated for Procrustes tangent coordinates, presented in graphs, and the plots are compared. Doubravčice 1 and Štíhlice plots differ especially in age (70 and 30 years) while they do not differ in tree class representation. |
| first_indexed | 2024-04-10T08:21:34Z |
| format | Article |
| id | doaj.art-3818c202c7b94a06984f53a39308929e |
| institution | Directory Open Access Journal |
| issn | 1212-4834 1805-935X |
| language | English |
| last_indexed | 2024-04-10T08:21:34Z |
| publishDate | 2005-06-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Journal of Forest Science |
| spelling | doaj.art-3818c202c7b94a06984f53a39308929e2023-02-23T03:41:41ZengCzech Academy of Agricultural SciencesJournal of Forest Science1212-48341805-935X2005-06-0151624425510.17221/4560-JFSjfs-200506-0002Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape descriptionM. Křepela0D. Zahradník1J. Sequens2Faculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech RepublicFaculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech RepublicFaculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech RepublicThe paper shows a possibility of using Bookstein coordinates for stem shape studies. Bookstein coordinates are simplified to stem shape diameters, for which tests of multidimensional normality, variance-covariance matrix homogeneity, equality of mean shape vectors and principal component calculation are carried out in sample plots Doubravčice 1 and Štíhlice. Principal components are also calculated for Procrustes tangent coordinates, presented in graphs, and the plots are compared. Doubravčice 1 and Štíhlice plots differ especially in age (70 and 30 years) while they do not differ in tree class representation.https://jfs.agriculturejournals.cz/artkey/jfs-200506-0002_possible-methods-of-norway-spruce-picea-abies-l-karst-stem-shape-description.phpnorway spruce (picea abies [l.] karst.)stem shapebookstein coordinatesstem shape diametersprocrustes tangent coordinatesprincipal components analysis |
| spellingShingle | M. Křepela D. Zahradník J. Sequens Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description Journal of Forest Science norway spruce (picea abies [l.] karst.) stem shape bookstein coordinates stem shape diameters procrustes tangent coordinates principal components analysis |
| title | Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description |
| title_full | Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description |
| title_fullStr | Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description |
| title_full_unstemmed | Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description |
| title_short | Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description |
| title_sort | possible methods of norway spruce picea abies l karst stem shape description |
| topic | norway spruce (picea abies [l.] karst.) stem shape bookstein coordinates stem shape diameters procrustes tangent coordinates principal components analysis |
| url | https://jfs.agriculturejournals.cz/artkey/jfs-200506-0002_possible-methods-of-norway-spruce-picea-abies-l-karst-stem-shape-description.php |
| work_keys_str_mv | AT mkrepela possiblemethodsofnorwaysprucepiceaabieslkarststemshapedescription AT dzahradnik possiblemethodsofnorwaysprucepiceaabieslkarststemshapedescription AT jsequens possiblemethodsofnorwaysprucepiceaabieslkarststemshapedescription |