Analiza stabilităţii arborilor la acţiunea vântului prin metoda cuplurilor uniforme [The analisys of tree stability at the wind action by uniform couples method]
A new method is used for evaluation of the stability of tree against the wind and to testing the theoretical stability models. The base principle of the uniform couple method is the relative identical environment conditions (site, stand and airflow) by using a couple of one damaged tree and two...
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| Format: | Article |
| Language: | English |
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”Ștefan cel Mare” University of Suceava, Faculty of Forestry and “Marin Drăcea” National Research-Development Institute in Forestry - Station Câmpulung Moldovenesc
2001-07-01
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| Series: | Bucovina Forestieră |
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| Online Access: | http://www.bucovina-forestiera.ro/arhiva/2001/9(1-2)/analiza-stabilitatii-arborilor-la-actiunea-vantului.pdf |
| Summary: | A new method is used for evaluation of the stability
of tree against the wind and to testing the theoretical
stability models. The base principle of the
uniform couple method is the relative identical
environment conditions (site, stand and airflow) by
using a couple of one damaged tree and two
undamaged trees (the most close). Using the index
statistical method it was possible to evaluate the
direction of influences of the biometrical and qualitative
tree parameters. Height and the ratio
between height and diameter of the damaged tree
were higher than the same parameters of undamaged
trees in 73 % and 83 % of the paars, respectively.
The influence of defects, especially the root
decay, is the most important in the stability of tree
against the wind. Over 50 % of damaged tree have
defects. The method of uniform couple is an alternative
to destructive methods for testing, in site
condition, by mechanical methods, the stability of
tree and to validate the theoretical models. |
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| ISSN: | 1582-0769 1582-3725 |