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Biofuels as a New Energy Paradigm: the Key Points of Debate after a Decade*

机译:生物燃料作为一种新能源范例:十年后辩论的重点*

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* This article is part of the doctoral thesis entitled Scenarios of future expansion of biofuels in Colombia: impacts generated by the expansion of oil palm plantations to produce biodiesel. Biofuels are promoted worldwide as an alternative to partially replace fossil fuels. After more than a decade of implementation, important questions have been raised concerning: i) the impacts generated by the change of use and land coverage; ii) the impacts on prices and food production, iii) the impacts on water and the related ecosystem services, and iv) greenhouse gas (GHG) emissions generated by the changes of land use. This article discusses these issues in the current situation of biofuels with emphasis in the tropical countries. Available studies show that despite their small contribution to the world energy matrix, the large-scale expansion of biofuels can generate negative impacts such as increase in the competition for water and land, especially in the vulnerable ecosystem and social structures in tropical countries.
机译:*本文是博士论文的一部分,该论文题为“哥伦比亚未来生物燃料的发展前景:油棕种植园扩张生产生物柴油所产生的影响”。生物燃料在世界范围内得到推广,作为部分替代化石燃料的替代方法。经过十多年的实施,人们提出了以下重要问题:i)使用和土地覆盖范围的变化所产生的影响; ii)对价格和粮食生产的影响,iii)对水和相关生态系统服务的影响,以及iv)土地用途变化产生的温室气体(GHG)排放。本文讨论了当前生物燃料形势下的这些问题,重点是热带国家。现有的研究表明,尽管生物燃料在世界能源矩阵中的贡献很小,但会产生负面影响,例如对水和土地的竞争加剧,特别是对热带国家脆弱的生态系统和社会结构的竞争。

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