Resistance of tree species to snow damage in Nav Asalem forests, Guilan province
Management of mountainous forests implies detailed information on the extent and intensity of snow damages. Furthermore, such information is required for improved conservation of natural stands. In this study, snow damages on six dominant tree species including Beech (Fagus orientalis Lipsky), Hornb...
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| Format: | Article |
| Language: | fas |
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Research Institute of Forests and Rangelands of Iran
2014-11-01
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| Series: | تحقیقات جنگل و صنوبر ایران |
| Subjects: | |
| Online Access: | http://ijfpr.areeo.ac.ir/article_12433_f078ba57097c3e75460f17c2ca307403.pdf |
| _version_ | 1819101525756084224 |
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| author | Amir Eslam Bonyad Farzam Tavankar |
| author_facet | Amir Eslam Bonyad Farzam Tavankar |
| author_sort | Amir Eslam Bonyad |
| collection | DOAJ |
| description | Management of mountainous forests implies detailed information on the extent and intensity of snow damages. Furthermore, such information is required for improved conservation of natural stands. In this study, snow damages on six dominant tree species including Beech (Fagus orientalis Lipsky), Hornbeam (Carpinus betulus L.), Velvet Maple (Acer velutinum Boiss.), Cappadocian Maple (Acer cappadocicum Gled.), Caucasian Alder (Alnus subcordata C. A. Mey) and Chestnut-leaved Oak (Quercus castaneifolia C. A. Mey.) were investigated across a portion of the Nav forest in the east of Guilan province. Circular 0.1-ha plots were systematically sampled in a grid with 100m sampling distance. Four types of tree damage were detected including crown damage (8.6%), stem breakage (5.5%), uprooting (3.2%) and bending (1.4%). The six studied tree species have different resistance to snow damage. The highest rates of uprooting and stem breakages were observed in Alder trees. The Oak trees were mostly influenced by crown damages. Furthermore, the Beech trees showed the lowest rate of crown damage and stem breakage. Based on the results, the tree species of Alder, Oak and Cappadocian Maple were categorized as being more vulnerable to snow risk, whereas Beech, Hornbeam and Velvet Maple proved to be less vulnerable. In addition, the slenderness coefficients were calculated for bended trees (76.7), stem broken trees (64.5), uprooted trees (64.0), crown damaged trees (60.1) and intact trees (50.2). This study also showed that trees of higher slenderness coefficient are more vulnerable to the snow risk. |
| first_indexed | 2024-12-22T01:20:04Z |
| format | Article |
| id | doaj.art-78640118e64e47d68e5dad2d865f3989 |
| institution | Directory Open Access Journal |
| issn | 1735-0883 2383-1146 |
| language | fas |
| last_indexed | 2024-12-22T01:20:04Z |
| publishDate | 2014-11-01 |
| publisher | Research Institute of Forests and Rangelands of Iran |
| record_format | Article |
| series | تحقیقات جنگل و صنوبر ایران |
| spelling | doaj.art-78640118e64e47d68e5dad2d865f39892022-12-21T18:43:45ZfasResearch Institute of Forests and Rangelands of Iranتحقیقات جنگل و صنوبر ایران1735-08832383-11462014-11-0122349650810.22092/ijfpr.2014.1243312433Resistance of tree species to snow damage in Nav Asalem forests, Guilan provinceAmir Eslam Bonyad0Farzam Tavankar1Assistant Prof., Islamic Azad University, Khalkhal Branch, Khalkhal, I.R. IranAssociate Prof., University of Guilan, Sowme`eh Sara, I.R. Iran.Management of mountainous forests implies detailed information on the extent and intensity of snow damages. Furthermore, such information is required for improved conservation of natural stands. In this study, snow damages on six dominant tree species including Beech (Fagus orientalis Lipsky), Hornbeam (Carpinus betulus L.), Velvet Maple (Acer velutinum Boiss.), Cappadocian Maple (Acer cappadocicum Gled.), Caucasian Alder (Alnus subcordata C. A. Mey) and Chestnut-leaved Oak (Quercus castaneifolia C. A. Mey.) were investigated across a portion of the Nav forest in the east of Guilan province. Circular 0.1-ha plots were systematically sampled in a grid with 100m sampling distance. Four types of tree damage were detected including crown damage (8.6%), stem breakage (5.5%), uprooting (3.2%) and bending (1.4%). The six studied tree species have different resistance to snow damage. The highest rates of uprooting and stem breakages were observed in Alder trees. The Oak trees were mostly influenced by crown damages. Furthermore, the Beech trees showed the lowest rate of crown damage and stem breakage. Based on the results, the tree species of Alder, Oak and Cappadocian Maple were categorized as being more vulnerable to snow risk, whereas Beech, Hornbeam and Velvet Maple proved to be less vulnerable. In addition, the slenderness coefficients were calculated for bended trees (76.7), stem broken trees (64.5), uprooted trees (64.0), crown damaged trees (60.1) and intact trees (50.2). This study also showed that trees of higher slenderness coefficient are more vulnerable to the snow risk.http://ijfpr.areeo.ac.ir/article_12433_f078ba57097c3e75460f17c2ca307403.pdfNav forestsnow damageuprootingstem breakageslenderness coefficientGuilan |
| spellingShingle | Amir Eslam Bonyad Farzam Tavankar Resistance of tree species to snow damage in Nav Asalem forests, Guilan province تحقیقات جنگل و صنوبر ایران Nav forest snow damage uprooting stem breakage slenderness coefficient Guilan |
| title | Resistance of tree species to snow damage in Nav Asalem forests, Guilan province |
| title_full | Resistance of tree species to snow damage in Nav Asalem forests, Guilan province |
| title_fullStr | Resistance of tree species to snow damage in Nav Asalem forests, Guilan province |
| title_full_unstemmed | Resistance of tree species to snow damage in Nav Asalem forests, Guilan province |
| title_short | Resistance of tree species to snow damage in Nav Asalem forests, Guilan province |
| title_sort | resistance of tree species to snow damage in nav asalem forests guilan province |
| topic | Nav forest snow damage uprooting stem breakage slenderness coefficient Guilan |
| url | http://ijfpr.areeo.ac.ir/article_12433_f078ba57097c3e75460f17c2ca307403.pdf |
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