INFLUENCE OF SPACING BETWEEN TREES ON WOOD AND CHARCOAL QUALITY INDICATORS

• Autor(a) principal: Gomes, Gabriel Soares Lopes
• Data de Publicação: 2024
• Outros Autores: Neto, Sílvio Nolasco de Oliveira, Carneiro, Angélica de Cássia Oliveira, Lopes, Lucas Sérgio de Sousa, Leite, Hélio Garcia, Caldeira, Marcos Vinicius Winckler
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Cerne (Online)
• Texto Completo: https://cerne.ufla.br/site/index.php/CERNE/article/view/3270
• topic: Wood quality; Biomass energy; Eucalyptus

Background: The objective of this study was to evaluate the quality indicators for wood and charcoalfrom the Eucalyptus urophylla x Eucalyptus grandis hybrid (Clone GG 100) in different plantingspacings. The study was conducted with the hybrid using the spacings of 2×1, 2×2, 3×2, and 3×3 m.The chemical properties of wood and charcoal were analyzed, and dry wood mass and energy perhectare were estimated. The data were subjected to the t test for comparison of means. Moreover,principal component analysis was conducted to assess the relationships between wood and charcoalindicators as a function of spacing.Results: The 2×2 m spacing showed the highest values for dry wood mass, lignin mass, mass ofcharcoal, and energy. The wider spacings of 3×2 and 3×3 m resulted in wood and charcoal ofincreased quality by showing wood of greater resistance to thermal degradation and charcoal ofhigher yield.Conclusion: Spacing between trees influenced wood quality indicators. The 2×2 m spacing showedhigher estimates of mass and energy per hectare. However, wide spacings with an area greater than6 m2 are more suitable for charcoal production due to their superior wood properties, especiallybasic density and total lignin, which influence gravimetric yields and bulk density.