Slenderness coefficient of five major tree species in the Hyrcanian forests of Iran
Slenderness coefficient of trees, defined as the ratio of total height to diameter at breast height (DBH), is frequently used as resistance index of trees to wind throw. By measuring DBH and total height of 1379 trees, the relationships between slenderness coefficients and trees DBH were investigat...
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| Format: | Article |
| Language: | fas |
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Research Institute of Forests and Rangelands of Iran
2007-06-01
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| Series: | تحقیقات جنگل و صنوبر ایران |
| Subjects: | |
| Online Access: | http://ijfpr.areeo.ac.ir/article_108173_bebdef7cc897bbdcb0cf499dc30f8e96.pdf |
| _version_ | 1819140567496392704 |
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| author | Reza Akhavan Manoochehr Namiranian |
| author_facet | Reza Akhavan Manoochehr Namiranian |
| author_sort | Reza Akhavan |
| collection | DOAJ |
| description | Slenderness coefficient of trees, defined as the ratio of total height to diameter at breast height (DBH), is frequently used as resistance index of trees to wind throw. By measuring DBH and total height of 1379 trees, the relationships between slenderness coefficients and trees DBH were investigated for five major tree species in a broadleaved Hyrcanian forests of Iran, Kheyroudkenar-Noshahr, including beech (Fagus orientalis Lipsky), hornbeam (Carpinus betulus L.), maple (Acer velutinum Boiss.), alder (Alnus subcordata C.A.M.) and oak (Qercus castaneifolia C.A.M.). Tree slenderness coefficients were found to be negatively correlated with DBH. The graphical results indicated that about 75% of the sampled trees had a slenderness coefficient lower than 80 and the range of variation is between 20 to 173. The most of difference among the slenderness coefficients of tree species were found in diameter class below 30 cm. Maximum slenderness coefficients observed in the valleys and northern aspects, while minimum in karstic phenomenons and southern aspects. No correlation was found between tree slenderness coefficients and stand density. |
| first_indexed | 2024-12-22T11:40:37Z |
| format | Article |
| id | doaj.art-caa936c17d70426b86a8add75bb8c713 |
| institution | Directory Open Access Journal |
| issn | 1735-0883 2383-1146 |
| language | fas |
| last_indexed | 2024-12-22T11:40:37Z |
| publishDate | 2007-06-01 |
| publisher | Research Institute of Forests and Rangelands of Iran |
| record_format | Article |
| series | تحقیقات جنگل و صنوبر ایران |
| spelling | doaj.art-caa936c17d70426b86a8add75bb8c7132022-12-21T18:27:18ZfasResearch Institute of Forests and Rangelands of Iranتحقیقات جنگل و صنوبر ایران1735-08832383-11462007-06-01152180165108173Slenderness coefficient of five major tree species in the Hyrcanian forests of IranReza Akhavan0Manoochehr Namiranian1Assistant professor. Research Institute of Forests and RangelandsAssociate professor. Faculty of Natural Resources, University of TehranSlenderness coefficient of trees, defined as the ratio of total height to diameter at breast height (DBH), is frequently used as resistance index of trees to wind throw. By measuring DBH and total height of 1379 trees, the relationships between slenderness coefficients and trees DBH were investigated for five major tree species in a broadleaved Hyrcanian forests of Iran, Kheyroudkenar-Noshahr, including beech (Fagus orientalis Lipsky), hornbeam (Carpinus betulus L.), maple (Acer velutinum Boiss.), alder (Alnus subcordata C.A.M.) and oak (Qercus castaneifolia C.A.M.). Tree slenderness coefficients were found to be negatively correlated with DBH. The graphical results indicated that about 75% of the sampled trees had a slenderness coefficient lower than 80 and the range of variation is between 20 to 173. The most of difference among the slenderness coefficients of tree species were found in diameter class below 30 cm. Maximum slenderness coefficients observed in the valleys and northern aspects, while minimum in karstic phenomenons and southern aspects. No correlation was found between tree slenderness coefficients and stand density.http://ijfpr.areeo.ac.ir/article_108173_bebdef7cc897bbdcb0cf499dc30f8e96.pdfslenderness coefficientaspectdensityphysiographyHyrcanian forests |
| spellingShingle | Reza Akhavan Manoochehr Namiranian Slenderness coefficient of five major tree species in the Hyrcanian forests of Iran تحقیقات جنگل و صنوبر ایران slenderness coefficient aspect density physiography Hyrcanian forests |
| title | Slenderness coefficient of five major tree species in the Hyrcanian forests of Iran |
| title_full | Slenderness coefficient of five major tree species in the Hyrcanian forests of Iran |
| title_fullStr | Slenderness coefficient of five major tree species in the Hyrcanian forests of Iran |
| title_full_unstemmed | Slenderness coefficient of five major tree species in the Hyrcanian forests of Iran |
| title_short | Slenderness coefficient of five major tree species in the Hyrcanian forests of Iran |
| title_sort | slenderness coefficient of five major tree species in the hyrcanian forests of iran |
| topic | slenderness coefficient aspect density physiography Hyrcanian forests |
| url | http://ijfpr.areeo.ac.ir/article_108173_bebdef7cc897bbdcb0cf499dc30f8e96.pdf |
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