Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of Ethiopia
A forest is a storehouse of carbon released from different sources when the activities of sustainable forest management, planting, and rehabilitation exist. However, few allometric equations are present to determine its contribution to carbon reduction. The target of the study was to develop species...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Hindawi Limited
2023-01-01
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| Series: | International Journal of Forestry Research |
| Online Access: | http://dx.doi.org/10.1155/2023/5572048 |
| _version_ | 1827077526875275264 |
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| author | Dereje Egeta Mesele Negash Mehari Alebachew Abeje Eshete Sinke Mulugeta Tamiru Lemi |
| author_facet | Dereje Egeta Mesele Negash Mehari Alebachew Abeje Eshete Sinke Mulugeta Tamiru Lemi |
| author_sort | Dereje Egeta |
| collection | DOAJ |
| description | A forest is a storehouse of carbon released from different sources when the activities of sustainable forest management, planting, and rehabilitation exist. However, few allometric equations are present to determine its contribution to carbon reduction. The target of the study was to develop species-specific allometric equations and establish a database for biomass expansion factor and wood density for five tree species grown in the dry Afromontane forest of Ethiopia. A direct or destructive sampling method was used on 62 trees from different diameter classes. The diameter at breast height and the total height of selected trees ranged from 7 to 48 cm and 6.7 to 23.4 m, respectively. Trees were felled and divided into various biomass sections. Stem and big branch discs were sampled to determine the wood density and volume of the trees. Sample wood and foliage were oven-dried for three days and two days at 105°C and 70°C, respectively, to get their dry weight. Total above-ground biomass was regressed using diameter at breast height, total height, wood density, and average crown diameter as independent variables. R software version 4.0.1 was used to fit the biomass equations. The best biomass models were determined to have lower AIC and RSE and highest adj. R2. The biomass expansion factor and wood density of five tree species ranged from 1.19 to 1.40 and 0.53 to 0.74 g/cm−3, respectively. Species-specific allometric equations were better than both mixed species and pan tropical models for the assessment of above-ground biomass in the Chilimo dry Afromontane forest of Ethiopia. |
| first_indexed | 2024-03-11T20:05:52Z |
| format | Article |
| id | doaj.art-c4904b0f76074252a3a47820ddd4036d |
| institution | Directory Open Access Journal |
| issn | 1687-9376 |
| language | English |
| last_indexed | 2025-03-20T02:15:11Z |
| publishDate | 2023-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | International Journal of Forestry Research |
| spelling | doaj.art-c4904b0f76074252a3a47820ddd4036d2024-10-03T07:52:31ZengHindawi LimitedInternational Journal of Forestry Research1687-93762023-01-01202310.1155/2023/5572048Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of EthiopiaDereje Egeta0Mesele Negash1Mehari Alebachew2Abeje Eshete3Sinke Mulugeta4Tamiru Lemi5Ethiopian Forestry Development Jimma CenterHawassa UniversityEthiopian Forestry DevelopmentEthiopian Forestry DevelopmentEthiopian Forestry Development Hawassa CenterEthiopian Forestry DevelopmentA forest is a storehouse of carbon released from different sources when the activities of sustainable forest management, planting, and rehabilitation exist. However, few allometric equations are present to determine its contribution to carbon reduction. The target of the study was to develop species-specific allometric equations and establish a database for biomass expansion factor and wood density for five tree species grown in the dry Afromontane forest of Ethiopia. A direct or destructive sampling method was used on 62 trees from different diameter classes. The diameter at breast height and the total height of selected trees ranged from 7 to 48 cm and 6.7 to 23.4 m, respectively. Trees were felled and divided into various biomass sections. Stem and big branch discs were sampled to determine the wood density and volume of the trees. Sample wood and foliage were oven-dried for three days and two days at 105°C and 70°C, respectively, to get their dry weight. Total above-ground biomass was regressed using diameter at breast height, total height, wood density, and average crown diameter as independent variables. R software version 4.0.1 was used to fit the biomass equations. The best biomass models were determined to have lower AIC and RSE and highest adj. R2. The biomass expansion factor and wood density of five tree species ranged from 1.19 to 1.40 and 0.53 to 0.74 g/cm−3, respectively. Species-specific allometric equations were better than both mixed species and pan tropical models for the assessment of above-ground biomass in the Chilimo dry Afromontane forest of Ethiopia.http://dx.doi.org/10.1155/2023/5572048 |
| spellingShingle | Dereje Egeta Mesele Negash Mehari Alebachew Abeje Eshete Sinke Mulugeta Tamiru Lemi Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of Ethiopia International Journal of Forestry Research |
| title | Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of Ethiopia |
| title_full | Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of Ethiopia |
| title_fullStr | Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of Ethiopia |
| title_full_unstemmed | Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of Ethiopia |
| title_short | Species-Specific Allometric Equations, Biomass Expansion Factor, and Wood Density of Native Tree Species in the Dry Afromontane Forest of Ethiopia |
| title_sort | species specific allometric equations biomass expansion factor and wood density of native tree species in the dry afromontane forest of ethiopia |
| url | http://dx.doi.org/10.1155/2023/5572048 |
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