Sapwood
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Effect of stem height in variation of bark, heartwood, sapwood and physical properties of wood in Dipteryx panamensis Pittier in a provenance/progeny test
RESUMO A madeira de Dipteryx panamensis é usada no reflorestamento na Costa Rica, tendo um programa de melhoramento genético iniciado recentemente no país. O objetivo do presente estudo foi estudar o efeito da altura do tronco das árvores na variação de casca, alburno, cerne, densidade verde (GD), densidade básica (SG) e teor de umidade na condição
Ciência Florestal. Publicado em: 2022
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2. Environmental Effect on Growth and Characteristics of Eucalyptus Wood
ABSTRACT The objective of this work was to evaluate environmental effect on growth, wood basic density and anatomical characteristics of Eucalyptus grandis × Eucalyptus urophylla clones for pulp production. The studied clones were from 6.5-year-old plantations of Fibria Celulose company, located in two places: Nova Almeida (ES) and Posto da Mata (BA). The t
Floresta Ambient.. Publicado em: 29/07/2019
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3. First Report of Heterotermes longiceps (Blattodea: Rhinotermitidae) Termite in Teak Plantations
ABSTRACT Heterotermes longiceps termites was observed causing injuries in Tectona grandis plants in a forest plantation in Cáceres, Mato Grosso, Brazil. H. longiceps caused galleries below the bark, at the heartwood-sapwood interface, from the beginning of the root until approximately 1 m height tall and very infested plants has died. This is the first repo
Floresta Ambient.. Publicado em: 15/07/2019
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4. Longitudinal and Transverse Variation in the Physical Properties of Wood Red Tauari
ABSTRACT The objective of this work was to study the fiber length variation, retractability and basic density, in the core-bark direction and along the heig of the red tauari wood (Cariniana micrantha Ducke). The stem was evaluated in the discs, from core to bark, corresponding to 0%, 25%, 50%, 75% and 100%. At the commercial height of the tree the evaluatio
Floresta Ambient.. Publicado em: 15/07/2019
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5. Deterioration of Teak Wood in Accelerated Decay Test
ABSTRACT The present study aimed to evaluate the biological resistance of teak (Tectona grandis) heartwood and sapwood to the action of Trametes versicolor and Gloeophyllum trabeum fungi in laboratory accelerated decay assays. The mass loss evaluation of the samples was performed periodically. The heartwood presented a higher percentage of extractives and th
Floresta Ambient.. Publicado em: 02/05/2019
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6. Influence of Age on the Discrimination of Tectona grandis by VIS/NIR Spectroscopy
ABSTRACT Wood color and properties are variables among and within species, and fast and non-destructive techniques can be applied to their characterization, being also important in wood marketing and quality control. This paper evaluated the influence of age on the discrimination of Tectona grandis L.F. (teak) wood by VIS/NIR spectroscopy. Wood from three ag
Floresta Ambient.. Publicado em: 02/05/2019
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7. Effect Of Planting Spacing In Production And Permeability Of Heartwood And Sapwood Of Eucalyptus Wood
RESUMO O objetivo deste trabalho foi avaliar a influência de diferentes áreas úteis proporcionadas pelos espaçamentos de plantio (3 × 1, 3 × 2, 3 × 3, 3 × 4 m) na produção e na permeabilidade do cerne e do alburno da madeira de clones de Eucalyptus grandis e Eucalyptus grandis × Eucalyptus urophylla, aos 4 anos de idade. Independente do clone, n�
Floresta Ambient.. Publicado em: 14/03/2019
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8. Relevance of wood anatomy and size of Amazonian trees in the determination and allometry of sapwood area
RESUMO Processos hidrológicos de povoamentos florestais são predominantemente influenciados pela composição de espécies arbóreas e suas características morfo-fisiológicas. No entanto, existem poucos estudos sobre os padrões anatômicos que determinam o sistema hidráulico de plantas em ecossistemas tropicais. Por isso, nosso objetivo foi o de analis
Acta Amaz.. Publicado em: 2019-03
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9. Dendrological Characterization as Inspection Resources of Caatinga Wood Market
ABSTRACT This study aimed to distinguish five native forest species of the Caatinga Biome from the exotic invasive algaroba (Prosopis juliflora (Sw.) DC.), considering dendrologic characteristics of bark and wood, in order of providing subsidies for the inspection of the wood market in this Biome. The native species studied were jurema-preta (Mimosa tenuifl
Floresta Ambient.. Publicado em: 07/06/2018
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10. Effect of Steaming on the Colorimetric Properties of Eucalyptus saligna Wood
ABSTRACT This study aimed to homogenize the color of Eucalyptus saligna wood by means of steaming and compare the resulting color with that of Cariniana legalis wood, a species of high commercial value. To this end, two steaming curves were tested: 100% relative humidity for 12 (T1) and 24 (T2) hours at 90 °C followed by drying in a pilot-scale conventiona
Floresta Ambient.. Publicado em: 19/03/2018
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11. Heartwood and sapwood in eucalyptus trees: non-conventional approach to wood quality
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 (Eucalyptu
An. Acad. Bras. Ciênc.. Publicado em: 2018-03
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12. MODELOS PREDICTIVOS DE BIOMASA AÉREA DE Eucalyptus grandis PARA EL NORESTE DE ARGENTINA
ABSTRACT Different industrial, environmental and energy interests have led, in recent years, to the analysis of different possibilities for utilization of forest biomass is gaining an increasing role, so that quantification of the biomass from these forest systems is an essential first and an unavoidable step. The aim of this study was to develop models whic
Ciênc. Florest.. Publicado em: 2015-09