Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola)
African mahogany species (Khaya spp.) have proven to be promising in the Brazilian forestry scenario, replacing native mahogany owing to their medium-fast growth and relevant timber value. This study aimed to carry out forest inventory and assessments of a Khaya grandifoliola plantation in the first...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2023-02-01
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| Series: | Bioscience Journal |
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| Online Access: | https://seer.ufu.br/index.php/biosciencejournal/article/view/62994 |
| _version_ | 1811169841971724288 |
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| author | Renan Krupok Matias Camilla Nascimento Brito Rafael Tassinari Resende Jovan Martins Rios Gabriel Mendes Santana Guilherme Murilo de Oliveira Fábio Venturoli |
| author_facet | Renan Krupok Matias Camilla Nascimento Brito Rafael Tassinari Resende Jovan Martins Rios Gabriel Mendes Santana Guilherme Murilo de Oliveira Fábio Venturoli |
| author_sort | Renan Krupok Matias |
| collection | DOAJ |
| description | African mahogany species (Khaya spp.) have proven to be promising in the Brazilian forestry scenario, replacing native mahogany owing to their medium-fast growth and relevant timber value. This study aimed to carry out forest inventory and assessments of a Khaya grandifoliola plantation in the first years after planting, test hypsometric models to describe tree growth, and identify the maximum commercial stem yield (i.e., greater than 6 m in height). The stand was located in the municipality of Piracanjuba (GO), where seedlings of seed origin were used. Twenty random plots with a 15 m radius were allocated, and the total height (HT), stem height (HS), diameter at breast height (DBH), crown area, and forest canopy were measured. Four hypsometric models were employed in this study. The best equation was selected based on determination coefficients and standard errors. Further, the models were cross-validated to evaluate predictability and bias. At four years of planting, the largest class of HS was found to range from 3.1 to 4.1 m, and most trees had a DBH ranging from 0.084 to 0.126 m. The percentage of trees with stems > 6 m was 8.35%. The linear model ensured more consistent results for estimating HT, while the quadratic and Weibull models led to more consistent results for HS. By using models, stem measurements can be measured based on DBH, ultimately aiding the selection of stem management strategies for the growth of forests with greater commercial value. |
| first_indexed | 2024-04-10T16:48:13Z |
| format | Article |
| id | doaj.art-f12042e660364a869d6ecef0d57c7d3d |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-04-10T16:48:13Z |
| publishDate | 2023-02-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-f12042e660364a869d6ecef0d57c7d3d2023-02-07T19:06:26ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632023-02-0139e39002e3900210.14393/BJ-v39n0a2023-6299435286Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola)Renan Krupok Matias0https://orcid.org/0000-0002-2720-835XCamilla Nascimento Brito1https://orcid.org/0000-0002-8580-6913Rafael Tassinari Resende2Jovan Martins Rios3https://orcid.org/0000-0002-7635-6623Gabriel Mendes Santana4https://orcid.org/0000-0002-0447-4559Guilherme Murilo de Oliveira5Fábio Venturoli6https://orcid.org/0000-0002-2105-5081Universidade UniAraguaiaUniversidade Federal de GoiásUniversidade Federal de Goiás Universidade Federal de GoiásUniversidade Federal de Paraná Universidade Federal de Goiás Universidade Federal de Goiás African mahogany species (Khaya spp.) have proven to be promising in the Brazilian forestry scenario, replacing native mahogany owing to their medium-fast growth and relevant timber value. This study aimed to carry out forest inventory and assessments of a Khaya grandifoliola plantation in the first years after planting, test hypsometric models to describe tree growth, and identify the maximum commercial stem yield (i.e., greater than 6 m in height). The stand was located in the municipality of Piracanjuba (GO), where seedlings of seed origin were used. Twenty random plots with a 15 m radius were allocated, and the total height (HT), stem height (HS), diameter at breast height (DBH), crown area, and forest canopy were measured. Four hypsometric models were employed in this study. The best equation was selected based on determination coefficients and standard errors. Further, the models were cross-validated to evaluate predictability and bias. At four years of planting, the largest class of HS was found to range from 3.1 to 4.1 m, and most trees had a DBH ranging from 0.084 to 0.126 m. The percentage of trees with stems > 6 m was 8.35%. The linear model ensured more consistent results for estimating HT, while the quadratic and Weibull models led to more consistent results for HS. By using models, stem measurements can be measured based on DBH, ultimately aiding the selection of stem management strategies for the growth of forests with greater commercial value.https://seer.ufu.br/index.php/biosciencejournal/article/view/62994forest modelinghardwoodproductiontree cropsvalidation study. |
| spellingShingle | Renan Krupok Matias Camilla Nascimento Brito Rafael Tassinari Resende Jovan Martins Rios Gabriel Mendes Santana Guilherme Murilo de Oliveira Fábio Venturoli Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola) Bioscience Journal forest modeling hardwood production tree crops validation study. |
| title | Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola) |
| title_full | Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola) |
| title_fullStr | Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola) |
| title_full_unstemmed | Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola) |
| title_short | Biometric assessment of early stem growth at a commercial stand of African mahogany (Khaya grandifoliola) |
| title_sort | biometric assessment of early stem growth at a commercial stand of african mahogany khaya grandifoliola |
| topic | forest modeling hardwood production tree crops validation study. |
| url | https://seer.ufu.br/index.php/biosciencejournal/article/view/62994 |
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