Wavelet Analysis of X-ray Density Function of Tree Ring Structure
| Autor: | Levente Csoka |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Drvna industrija Volume 67 Issue 2 |
| ISSN: | 1847-1153 0012-6772 |
| Popis: | The annual ring density of cross-sections of Japanese cedar stems of different ages has been recorded by X-ray density analyser in order to determine the boundary line between juvenile and mature wood. A particular emphasis was put on the tracheid length in the annual rings. The obtained data was analysed by using Wavelet transformation. It can be assumed that the process of formation of woody tissue is a periodic one and that the characteristic periods include several annual rings. This also indicates that the growth of a tree can be separated into distinct processes that can be identified within the juvenile and mature wood zones. It has been shown that the suggested numerical approach enables a rapid and reliable evaluation of the data. Gustoća godova na poprečnim presjecima debla japanskog cedra različite starosti određena je uz pomoć rendgenskog analizatora gustoće kako bi se utvrdila granična linija između juvenilnoga i zrelog drva. Poseban naglasak stavljen je na duljinu traheida u godovima. Dobiveni su podatci analizirani uz pomoć wavelet transformacije. Može se pretpostaviti da je proces formiranja drvnog tkiva periodičan i da karakteristična razdoblja obuhvaćaju nekoliko godova. To također pokazuje da se rast stabla može podijeliti u različite procese koji se mogu identificirati unutar zone juvenilnoga i zrelog drva. U radu je utvrđeno da predloženi numerički pristup omogućuje brzu i pouzdanu procjenu podataka. |
| Databáze: | OpenAIRE |
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