Balanço de energia e gases de efeito estufa no cultivo da macaúba
- Adriana Corrêa Guimarães 1
- Anderson Barbosa Evaristo 2
- Ignacio A. Fernández-Coppel 1
- Leonardo Duarte Pimentel 3
- Luis Manuel Navas 1
- Pablo Martin Ramos 4
- Jesús Martín-Gil 1
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1
Universidad de Valladolid
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- 2 Universidade do Estado do Tocantins
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3
Universidade Federal de Viçosa
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4
Universidad de Zaragoza
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- José Carlos Barbosa (coord.)
- António Castro Ribeiro (coord.)
Editorial: Instituto Politécnico de Bragança
ISBN: 978-972-745-247-7
Año de publicación: 2018
Páginas: 758-770
Congreso: Congreso Ibérico de Agroingeniería y Ciencias Hortícolas (9. 2017. Braganza)
Tipo: Aportación congreso
Resumen
The expansion of the production and use of bioenergy is deemed as one of the most efficient mechanisms to reduce greenhouse gas (GHG) emissions. Nevertheless, the environmental impact of the production processes for many raw materials remains unexplored. Several studies have pointed to macauba palm (Acrocomiaaculeata (Jacq.) Lodd. ex Mart.) as a promising species for biofuel production in the tropics, but investigations on the environmental benefits of the cultivation of this palm as a source of raw material for biofuel production have not been reported so far. The aim of this work has been to conduct an analysis of macauba production system in terms of GHG emissions and CO2 uptake for a productive cycle, considering a 30-year horizon. The energy conversion efficiency (energy outputs/inputs ratio) per unit area of land has been put in relationship with crop productivity and related to the dilution effect of production inputs. Results of the simulation estimate that GHG emissions from macauba crop would be around 150 Mg CO2eq ha-1, whereas CO2 fixation during cultivation would range from 796 to 1400 Mg CO2eq ha- 1. These results, compared with those of traditional energy crops such as sugarcane, oil palm, sunflower, corn or jatropha, suggest that macaúba cropmay have the potential to outperform them in terms of efficiency. The domestication and exploitation inextensive farming of this species as an agroforestry crop, although still at an early stage, has a bright future.