Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory
In the Czech Republic, the silver birch (Betula pendula Roth.) is considered as a pioneer and a soil preparing tree species. It occurs mainly on clearcutting areas after disturbances. The aim of this study was to fit breast height diameter increment model for birch with respect to tree age, share of...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2020-11-01
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| Series: | Journal of Forest Science |
| Subjects: | |
| Online Access: | https://jfs.agriculturejournals.cz/artkey/jfs-202011-0004_evaluation-of-silver-birch-diameter-increment-model-based-on-data-of-the-czech-national-forest-inventory.php |
| _version_ | 1797898683252998144 |
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| author | Jan Kikal Zdeněk Adamec |
| author_facet | Jan Kikal Zdeněk Adamec |
| author_sort | Jan Kikal |
| collection | DOAJ |
| description | In the Czech Republic, the silver birch (Betula pendula Roth.) is considered as a pioneer and a soil preparing tree species. It occurs mainly on clearcutting areas after disturbances. The aim of this study was to fit breast height diameter increment model for birch with respect to tree age, share of birch trees and forest site type (ecological series - ES and forest vegetation zones - FVZ). We used data of both cycles of National Forest Inventory of the Czech Republic. We evaluated production potential of this species. We tested Korf and Michailoff increment models in variant of nonlinear least squares model (NLS) and nonlinear mixed effects model (NLME). Michailoff models performed better. We found seven statistically significant and practically applicable models. The greatest influence on increment of diameter at breast height have forest vegetation zone and ecological series whereas the influence of the share of birch in forest stand is smaller. The highest absolute values of diameter increment were on gleyed or enriched with water sites in the fourth forest vegetation zone. |
| first_indexed | 2024-04-10T08:17:00Z |
| format | Article |
| id | doaj.art-18dd5f0c05764b10be7343e399e869e9 |
| institution | Directory Open Access Journal |
| issn | 1212-4834 1805-935X |
| language | English |
| last_indexed | 2024-04-10T08:17:00Z |
| publishDate | 2020-11-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Journal of Forest Science |
| spelling | doaj.art-18dd5f0c05764b10be7343e399e869e92023-02-23T03:43:05ZengCzech Academy of Agricultural SciencesJournal of Forest Science1212-48341805-935X2020-11-01661147148110.17221/161/2020-JFSjfs-202011-0004Evaluation of silver birch diameter increment model based on data of the Czech National Forest InventoryJan KikalZdeněk Adamec0Department of Forest Management and Applied Geoinformatics, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech RepublicIn the Czech Republic, the silver birch (Betula pendula Roth.) is considered as a pioneer and a soil preparing tree species. It occurs mainly on clearcutting areas after disturbances. The aim of this study was to fit breast height diameter increment model for birch with respect to tree age, share of birch trees and forest site type (ecological series - ES and forest vegetation zones - FVZ). We used data of both cycles of National Forest Inventory of the Czech Republic. We evaluated production potential of this species. We tested Korf and Michailoff increment models in variant of nonlinear least squares model (NLS) and nonlinear mixed effects model (NLME). Michailoff models performed better. We found seven statistically significant and practically applicable models. The greatest influence on increment of diameter at breast height have forest vegetation zone and ecological series whereas the influence of the share of birch in forest stand is smaller. The highest absolute values of diameter increment were on gleyed or enriched with water sites in the fourth forest vegetation zone.https://jfs.agriculturejournals.cz/artkey/jfs-202011-0004_evaluation-of-silver-birch-diameter-increment-model-based-on-data-of-the-czech-national-forest-inventory.phpgrowth conditionskorf functionmichailoff functionshare of birch treesstand production |
| spellingShingle | Jan Kikal Zdeněk Adamec Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory Journal of Forest Science growth conditions korf function michailoff function share of birch trees stand production |
| title | Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory |
| title_full | Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory |
| title_fullStr | Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory |
| title_full_unstemmed | Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory |
| title_short | Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory |
| title_sort | evaluation of silver birch diameter increment model based on data of the czech national forest inventory |
| topic | growth conditions korf function michailoff function share of birch trees stand production |
| url | https://jfs.agriculturejournals.cz/artkey/jfs-202011-0004_evaluation-of-silver-birch-diameter-increment-model-based-on-data-of-the-czech-national-forest-inventory.php |
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