Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province
Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied rando...
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Gespeichert in:
| Autor*in: |
Mohammad Reza Kordi [verfasserIn] Jahangir Mohammadi [verfasserIn] Mohammad Hadi Moayyeri [verfasserIn] Jahanbakhsh Sadeghian [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Persisch |
| Erschienen: |
2017 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: تحقیقات جنگل و صنوبر ایران - Research Institute of Forests and Rangelands of Iran, 2018, 25(2017), 4, Seite 598-608 |
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| Übergeordnetes Werk: |
volume:25 ; year:2017 ; number:4 ; pages:598-608 |
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Link aufrufen |
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| DOI / URN: |
10.22092/ijfpr.2017.113856 |
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| Katalog-ID: |
DOAJ045801266 |
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| 520 | |a Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. | ||
| 650 | 4 | |a Artificial form factor | |
| 650 | 4 | |a Hohnadl form factor | |
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10.22092/ijfpr.2017.113856 doi (DE-627)DOAJ045801266 (DE-599)DOAJdbb1ecbf5ddc4805933db03fa9cc436b DE-627 ger DE-627 rakwb per SD1-669.5 Mohammad Reza Kordi verfasserin aut Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. Artificial form factor Hohnadl form factor natural form factor tariff true form factor true volume Forestry Jahangir Mohammadi verfasserin aut Mohammad Hadi Moayyeri verfasserin aut Jahanbakhsh Sadeghian verfasserin aut In تحقیقات جنگل و صنوبر ایران Research Institute of Forests and Rangelands of Iran, 2018 25(2017), 4, Seite 598-608 (DE-627)1760615552 23831146 nnns volume:25 year:2017 number:4 pages:598-608 https://doi.org/10.22092/ijfpr.2017.113856 kostenfrei https://doaj.org/article/dbb1ecbf5ddc4805933db03fa9cc436b kostenfrei http://ijfpr.areeo.ac.ir/article_113856_6d664688c8ef53a4de0a02e99b3addec.pdf kostenfrei https://doaj.org/toc/1735-0883 Journal toc kostenfrei https://doaj.org/toc/2383-1146 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA AR 25 2017 4 598-608 |
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10.22092/ijfpr.2017.113856 doi (DE-627)DOAJ045801266 (DE-599)DOAJdbb1ecbf5ddc4805933db03fa9cc436b DE-627 ger DE-627 rakwb per SD1-669.5 Mohammad Reza Kordi verfasserin aut Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. Artificial form factor Hohnadl form factor natural form factor tariff true form factor true volume Forestry Jahangir Mohammadi verfasserin aut Mohammad Hadi Moayyeri verfasserin aut Jahanbakhsh Sadeghian verfasserin aut In تحقیقات جنگل و صنوبر ایران Research Institute of Forests and Rangelands of Iran, 2018 25(2017), 4, Seite 598-608 (DE-627)1760615552 23831146 nnns volume:25 year:2017 number:4 pages:598-608 https://doi.org/10.22092/ijfpr.2017.113856 kostenfrei https://doaj.org/article/dbb1ecbf5ddc4805933db03fa9cc436b kostenfrei http://ijfpr.areeo.ac.ir/article_113856_6d664688c8ef53a4de0a02e99b3addec.pdf kostenfrei https://doaj.org/toc/1735-0883 Journal toc kostenfrei https://doaj.org/toc/2383-1146 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA AR 25 2017 4 598-608 |
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10.22092/ijfpr.2017.113856 doi (DE-627)DOAJ045801266 (DE-599)DOAJdbb1ecbf5ddc4805933db03fa9cc436b DE-627 ger DE-627 rakwb per SD1-669.5 Mohammad Reza Kordi verfasserin aut Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. Artificial form factor Hohnadl form factor natural form factor tariff true form factor true volume Forestry Jahangir Mohammadi verfasserin aut Mohammad Hadi Moayyeri verfasserin aut Jahanbakhsh Sadeghian verfasserin aut In تحقیقات جنگل و صنوبر ایران Research Institute of Forests and Rangelands of Iran, 2018 25(2017), 4, Seite 598-608 (DE-627)1760615552 23831146 nnns volume:25 year:2017 number:4 pages:598-608 https://doi.org/10.22092/ijfpr.2017.113856 kostenfrei https://doaj.org/article/dbb1ecbf5ddc4805933db03fa9cc436b kostenfrei http://ijfpr.areeo.ac.ir/article_113856_6d664688c8ef53a4de0a02e99b3addec.pdf kostenfrei https://doaj.org/toc/1735-0883 Journal toc kostenfrei https://doaj.org/toc/2383-1146 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA AR 25 2017 4 598-608 |
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10.22092/ijfpr.2017.113856 doi (DE-627)DOAJ045801266 (DE-599)DOAJdbb1ecbf5ddc4805933db03fa9cc436b DE-627 ger DE-627 rakwb per SD1-669.5 Mohammad Reza Kordi verfasserin aut Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. Artificial form factor Hohnadl form factor natural form factor tariff true form factor true volume Forestry Jahangir Mohammadi verfasserin aut Mohammad Hadi Moayyeri verfasserin aut Jahanbakhsh Sadeghian verfasserin aut In تحقیقات جنگل و صنوبر ایران Research Institute of Forests and Rangelands of Iran, 2018 25(2017), 4, Seite 598-608 (DE-627)1760615552 23831146 nnns volume:25 year:2017 number:4 pages:598-608 https://doi.org/10.22092/ijfpr.2017.113856 kostenfrei https://doaj.org/article/dbb1ecbf5ddc4805933db03fa9cc436b kostenfrei http://ijfpr.areeo.ac.ir/article_113856_6d664688c8ef53a4de0a02e99b3addec.pdf kostenfrei https://doaj.org/toc/1735-0883 Journal toc kostenfrei https://doaj.org/toc/2383-1146 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA AR 25 2017 4 598-608 |
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10.22092/ijfpr.2017.113856 doi (DE-627)DOAJ045801266 (DE-599)DOAJdbb1ecbf5ddc4805933db03fa9cc436b DE-627 ger DE-627 rakwb per SD1-669.5 Mohammad Reza Kordi verfasserin aut Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. Artificial form factor Hohnadl form factor natural form factor tariff true form factor true volume Forestry Jahangir Mohammadi verfasserin aut Mohammad Hadi Moayyeri verfasserin aut Jahanbakhsh Sadeghian verfasserin aut In تحقیقات جنگل و صنوبر ایران Research Institute of Forests and Rangelands of Iran, 2018 25(2017), 4, Seite 598-608 (DE-627)1760615552 23831146 nnns volume:25 year:2017 number:4 pages:598-608 https://doi.org/10.22092/ijfpr.2017.113856 kostenfrei https://doaj.org/article/dbb1ecbf5ddc4805933db03fa9cc436b kostenfrei http://ijfpr.areeo.ac.ir/article_113856_6d664688c8ef53a4de0a02e99b3addec.pdf kostenfrei https://doaj.org/toc/1735-0883 Journal toc kostenfrei https://doaj.org/toc/2383-1146 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA AR 25 2017 4 598-608 |
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This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. 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Mohammad Reza Kordi misc SD1-669.5 misc Artificial form factor misc Hohnadl form factor misc natural form factor misc tariff misc true form factor misc true volume misc Forestry Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province |
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SD1-669.5 Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province Artificial form factor Hohnadl form factor natural form factor tariff true form factor true volume |
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determination of form factor for oriental beech (fagus orientalis lipsky) in golestan province |
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Determination of form factor for oriental beech (Fagus orientalis Lipsky) in Golestan province |
| abstract |
Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. |
| abstractGer |
Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. |
| abstract_unstemmed |
Oriental beech (Fagus orientalis Lipsky) is one of the most valuable tree species that covers 17.6% of the area and make up 30% of the stand volume in the Hyrcanian forests. This study aimed to update the form factor and to improve the volume table of this species. For this purpose, we applied random sampling method to collect field data from 150 beech trees in different diameter at breast height (D.B.H) classes (30-135 cm) based on inventory and marking list of 2015-2016. The sample trees were distributed in five forest management plan area including Livan, Vatana, Kordkuy, Shamushak, and Dr. Bahramnia. In each tree, D.B.H and diameter at 0.1, 0.3, 0.5, 0.7 and 0.9 of tree height, as well as diameter at two tops of 2 m long logs were measured. Finally the tree volume, true, natural, artificial and Hohnadl form factor for each tree was computed. The results showed that true, natural, artificial, and Hohnadl form factor value were 0.503, 0.464, 0.407 and 0.454, respectively. There were significant statistical differences between the true, artificial and natural with Hohnadl form factor (α = 0.05). The difference between true and natural form factor was not significant. Also, the results showed that there was significant difference between the computed volume and the volume driven from volume table (tariff); the greatest differences between the mentioned volumes estimated was mainly in the large D.B.H classes. According to the results, we can conclude that the natural form factor can be applied to determine the beech form factor. |
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