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Mixed-species plantations of Eucalyptus and Acacia mangium as an alternative for bioenergy production in tropical regions

Hakamada Rodrigo, Bouillet Jean-Pierre, Gonçalves José Leonardo M., Voigtlaender Maureen, Gava José Luis, Leite F., Mareschal Louis, Nouvellon Yann, Mazoumbou J., Koutika L., Epron Daniel, Laclau Jean-Paul. 2014. Mixed-species plantations of Eucalyptus and Acacia mangium as an alternative for bioenergy production in tropical regions. International Forestry Review, 16 (5), n.spéc. XXIV IUFRO World Congress abstracts, Résumé : p. 359. IUFRO World Congress. Sustaining Forests, Sustaining People: The Role of Research. 24, Salt Lake City, États-Unis, 5 October 2014/11 October 2014.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q3, Sujet : FORESTRY

Abstract : Silvicultural practices that increase wood production in forest plantations are required to achieve society's demand for renewable energy sources. Mixed-species plantations of Eucalyptus and Acacia mangium, a N-fixing species, have been studied as a pathway of ecological intensification, enhancing nitrogen availability and carbon accumulation within the system. Our objective was to compare the potential of bioenergy production in pure and mixed-species plantations. We used calorific values from the literature along with data of wood production measured at five sites in Brazil and Congo with various levels of productivity to calculate the energy produced at the end of stand rotation (on average 6.2 years after planting). We compared pure Eucalyptus stands (100E) to mixed-species stands with the same density of Eucalyptus trees with 25% Acacia trees (100E:25A). At all sites, the mixtures generated energy gains ranging from 0.2 to 36.3% compared to Eucalyptus monocultures. These gains were highly correlated (R2>0.99) with total stemwood production, due to comparable calorific values for both species. This study opens the possibility for using mixed-species plantations of Eucalyptus with N-fixing tree species as a renewable source of bioenergy for both domestic and commercial uses.

Mots-clés Agrovoc : Eucalyptus grandis, Acacia mangium, Plantation forestière, Culture en mélange, Culture associée, Arbre fixateur d'azote, Bioénergie

Mots-clés géographiques Agrovoc : Brésil, République démocratique du Congo

Mots-clés libres : Nitrogen fixing tree, Charcoal, Fire wood, Calorific values, Ecological intensification

Classification Agris : K10 - Forestry production
P06 - Renewable energy resources
F08 - Cropping patterns and systems

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Auteurs et affiliations

  • Hakamada Rodrigo, Universidade de São Paulo (BRA)
  • Bouillet Jean-Pierre, CIRAD-PERSYST-UMR Eco&Sols (BRA)
  • Gonçalves José Leonardo M., ESALQ (BRA)
  • Voigtlaender Maureen, Institute of Forest Research (BRA)
  • Gava José Luis, Suzano de Paper e Celulose (BRA)
  • Leite F.
  • Mareschal Louis, CIRAD-PERSYST-UMR Eco&Sols (COG)
  • Nouvellon Yann, CIRAD-PERSYST-UMR Eco&Sols (BRA)
  • Mazoumbou J.
  • Koutika L.
  • Epron Daniel
  • Laclau Jean-Paul, CIRAD-PERSYST-UMR Eco&Sols (FRA) ORCID: 0000-0002-2506-214X

Source : Cirad-Agritrop (https://agritrop.cirad.fr/596001/)

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