Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of Iran
Allometric relationships for estimating the biomass of the crown of Lebanon oak (Quercus libani Oliv.) have been developed through using biometric parameters such as the diameter at breast height, tree height, crown length, and crown width. The study was conducted in Armardeh forests in Iran’s nor...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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University of Zagreb, Faculty of Forestry
2012-01-01
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| Series: | Croatian Journal of Forest Engineering |
| Online Access: | https://hrcak.srce.hr/file/172740 |
| _version_ | 1818924627462717440 |
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| author | Manouchehr Namiranian Hedayat Ghazanfari Anoushirvan Shirvani Sheyda Khosravi |
| author_facet | Manouchehr Namiranian Hedayat Ghazanfari Anoushirvan Shirvani Sheyda Khosravi |
| author_sort | Manouchehr Namiranian |
| collection | DOAJ |
| description | Allometric relationships for estimating the biomass of the crown of Lebanon oak (Quercus libani Oliv.) have been developed through using biometric parameters such as the diameter at breast height, tree height, crown length, and crown width. The study was conducted in Armardeh forests in Iran’s northern Zagros mountains; for a long time the local people have been pollarding the crown of oak trees in these forests for their traditional uses. After the local people entirely cut the crowns of 48 sample trees, the weight of the crowns and their constituting components (leaves and branches) were measured. The results showed that the amount of the crown biomass of Lebanon oak at the stand level is about 4.98±0.81 tons ha (95% confidence interval), 79% of which are branches and the rest are leaves.
All the equations, representing the relationships between biometric parameters and the biomass of the crown or its components, were highly significant (p<0.001), and the adjusted coefficient of determination (R) was in the range of 0.51–0.65. The most suitable relationship was a multiple regression between the crown width and the tree height, as independent variables, with the crown biomass, as the dependent variable (R2adj = 0.65). These relationships can be helpful for evaluating the crown biomass production of Lebanon oak, and can be useful for planning a sustainable forest management. |
| first_indexed | 2024-12-20T02:28:20Z |
| format | Article |
| id | doaj.art-cc5bc9dd34fb48348b277ebe9b827ab9 |
| institution | Directory Open Access Journal |
| issn | 1845-5719 1848-9672 |
| language | English |
| last_indexed | 2024-12-20T02:28:20Z |
| publishDate | 2012-01-01 |
| publisher | University of Zagreb, Faculty of Forestry |
| record_format | Article |
| series | Croatian Journal of Forest Engineering |
| spelling | doaj.art-cc5bc9dd34fb48348b277ebe9b827ab92022-12-21T19:56:39ZengUniversity of Zagreb, Faculty of ForestryCroatian Journal of Forest Engineering1845-57191848-96722012-01-01332239247116843Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of IranManouchehr Namiranian0Hedayat Ghazanfari1Anoushirvan Shirvani2Sheyda Khosravi3University of Tehran Faculty of Natural Resources Department of Forestry and Forest Economics P.O. Box 31585-4314 Karaj IRANUniversity of Kurdistan Faculty of Natural Resources Department of Forestry P.O. Box 15175-66177 Sanandaj IRANUniversity of Tehran Faculty of Natural Resources Department of Forestry and Forest Economics P.O. Box 31585-4314 Karaj IRANUniversity of Tehran Faculty of Natural Resources Department of Forestry and Forest Economics P.O. Box 31585-4314 Karaj IRANAllometric relationships for estimating the biomass of the crown of Lebanon oak (Quercus libani Oliv.) have been developed through using biometric parameters such as the diameter at breast height, tree height, crown length, and crown width. The study was conducted in Armardeh forests in Iran’s northern Zagros mountains; for a long time the local people have been pollarding the crown of oak trees in these forests for their traditional uses. After the local people entirely cut the crowns of 48 sample trees, the weight of the crowns and their constituting components (leaves and branches) were measured. The results showed that the amount of the crown biomass of Lebanon oak at the stand level is about 4.98±0.81 tons ha (95% confidence interval), 79% of which are branches and the rest are leaves. All the equations, representing the relationships between biometric parameters and the biomass of the crown or its components, were highly significant (p<0.001), and the adjusted coefficient of determination (R) was in the range of 0.51–0.65. The most suitable relationship was a multiple regression between the crown width and the tree height, as independent variables, with the crown biomass, as the dependent variable (R2adj = 0.65). These relationships can be helpful for evaluating the crown biomass production of Lebanon oak, and can be useful for planning a sustainable forest management.https://hrcak.srce.hr/file/172740 |
| spellingShingle | Manouchehr Namiranian Hedayat Ghazanfari Anoushirvan Shirvani Sheyda Khosravi Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of Iran Croatian Journal of Forest Engineering |
| title | Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of Iran |
| title_full | Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of Iran |
| title_fullStr | Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of Iran |
| title_full_unstemmed | Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of Iran |
| title_short | Crown Biomass Relationships of Lebanon Oak in Northern Zagros Forests of Iran |
| title_sort | crown biomass relationships of lebanon oak in northern zagros forests of iran |
| url | https://hrcak.srce.hr/file/172740 |
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