| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000420620 |
| ISSN: | 0001-3765 |
| Authors: | Cherelli, Sabrina G1 Sartori, Maria Marcia P2 Prospero, Andre G3 Ballarin, Adriano W1 |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Engenharia Rural, Botucatu, Sao Paulo. Brasil 2Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Producao e Melhoramento Vegetal, Botucatu, Sao Paulo. Brasil 3Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Fisica e Biofisica, Botucatu, Sao Paulo. Brasil |
| Year: | 2018 |
| Season: | Mar |
| Volumen: | 90 |
| Number: | 1 |
| Pages: | 425-438 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | This study evaluated the quality of heartwood and sapwood from mature trees of three species of Eucalyptus, by means of the qualification of their proportion, determination of basic and apparent density using non-destructive attenuation of gamma radiation technique and calculation of the density uniformity index. Six trees of each species (Eucalyptus grandis - 18 years old, Eucalyptus tereticornis - 35 years old and Corymbia citriodora - 28 years old) were used in the experimental program. The heartwood and sapwood were delimited by macroscopic analysis and the calculation of areas and percentage of heartwood and sapwood were performed using digital image. The uniformity index was calculated following methodology which numerically quantifies the dispersion of punctual density values of the wood around the mean density along the radius. The percentage of the heartwood was higher than the sapwood in all species studied. The density results showed no statistical difference between heartwood and sapwood. Differently from the density results, in all species studied there was statistical differences between uniformity indexes for heartwood and sapwood regions, making justifiable the inclusion of the density uniformity index as a quality parameter for Eucalyptus wood |
| Disciplines: | Agrociencias |
| Keyword: | Silvicultura, Anatomía de la madera, Análisis de imágenes, Albura, Eucalyptus |
| Keyword: | Silviculture, Wood anatomy, Image analysis, Sapwood, Eucalyptus |
| Full text: | Texto completo (Ver HTML) |
