Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings
The objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for energy purposes. The widest spacing (3.0x3.0 m) provides better individual growth, and the narrowest one (2.0x2.0 m) produces smaller trees, but with the highest percentage of dry biomass in the trunk, and can show the best energy potential at a rotation age from 40 to 50 months.
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Pesquisa Agropecuaria Brasileira
2018
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rev-pab-br-article-258722018-10-09T16:25:54Z Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings Crescimento, biomassa e qualidade energética da madeira de Acacia mangium em diferentes espaçamentos Tonini, Helio Schwengber, Dalton Roberto Morales, Marina Moura Magalhaes, Ciro Augusto de Souza de Oliveira, Jane Maria Franco Amazon; biomass accumulation; energy productivity; forest plantation; Roraima Amazônia; acúmulo de biomassa; produção de energia; reflorestamento; Roraima The objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for energy purposes. The widest spacing (3.0x3.0 m) provides better individual growth, and the narrowest one (2.0x2.0 m) produces smaller trees, but with the highest percentage of dry biomass in the trunk, and can show the best energy potential at a rotation age from 40 to 50 months. O objetivo deste trabalho foi avaliar o efeito do espaçamento de plantio sobre o crescimento, a alocação de biomassa e a qualidade da madeira para geração de energia de Acacia magium. O experimento foi instalado em delineamento experimental de blocos ao acaso, com três repetições e cinco tratamentos que consistiram de árvores plantadas nos espaçamentos de: 2,0x2,0, 2,5x2,5, 3,0x2,0, 3,0x2,5 e 3,0x3,0 m. Aos 67 meses de plantio, avaliaram-se os seguintes parâmetros da espécie: desempenho (mortalidade, crescimento em diâmetro, altura, fator de casca, e produção volumétrica de casca e de biomassa) e qualidade energética da madeira (densidade básica, poder calorífico superior, cinzas, carbono fixo e materiais voláteis), por meio de análise de variância. O espaçamento de plantio não teve influência sobre a produção em volume e de biomassa por hectare, nem sobre a qualidade da madeira para a produção de energia. O maior espaçamento de plantio (3,0x3,0 m) fornece maior crescimento individual, e o menor espaçamento (2,0x2,0 m) produz árvores de menores dimensões, porém com maior percentagem de biomassa concentrada no tronco, e pode apresentar maior eficiência energética com a adoção de uma idade de rotação entre 40 a 50 meses. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira FIT Manejo Florestal Ltda. 2018-10-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/25872 Pesquisa Agropecuaria Brasileira; v.53, n.7, jul. 2018; 791-799 Pesquisa Agropecuária Brasileira; v.53, n.7, jul. 2018; 791-799 1678-3921 0100-104x eng https://seer.sct.embrapa.br/index.php/pab/article/view/25872/14228 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/25872/17566 Direitos autorais 2018 Pesquisa Agropecuária Brasileira |
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Tonini, Helio Schwengber, Dalton Roberto Morales, Marina Moura Magalhaes, Ciro Augusto de Souza de Oliveira, Jane Maria Franco |
| spellingShingle |
Tonini, Helio Schwengber, Dalton Roberto Morales, Marina Moura Magalhaes, Ciro Augusto de Souza de Oliveira, Jane Maria Franco Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings |
| author_facet |
Tonini, Helio Schwengber, Dalton Roberto Morales, Marina Moura Magalhaes, Ciro Augusto de Souza de Oliveira, Jane Maria Franco |
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Tonini, Helio |
| title |
Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings |
| title_short |
Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings |
| title_full |
Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings |
| title_fullStr |
Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings |
| title_full_unstemmed |
Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings |
| title_sort |
growth, biomass, and energy quality of acacia mangium timber grown at different spacings |
| description |
The objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for energy purposes. The widest spacing (3.0x3.0 m) provides better individual growth, and the narrowest one (2.0x2.0 m) produces smaller trees, but with the highest percentage of dry biomass in the trunk, and can show the best energy potential at a rotation age from 40 to 50 months. |
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Pesquisa Agropecuaria Brasileira |
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2018 |
| url |
https://seer.sct.embrapa.br/index.php/pab/article/view/25872 |
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