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首页> 外文期刊>Ecological Economics >Biofuel policies and the environment: Do climate benefits warrant increased production from biofuel feedstocks?
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Biofuel policies and the environment: Do climate benefits warrant increased production from biofuel feedstocks?

机译：生物燃料政策与环境：气候效益是否保证生物燃料原料能增加产量？

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摘要

We examine whether climate benefits warrant policies promoting biofuel production from agricultural crops when other environmental impacts are accounted for. We develop a general economic-ecological modelling framework for integrated analysis of biofuel policies. An economic model of farmers' decision making is combined with a biophysical model predicting the effects of farming practices on crop yields and relevant environmental impacts. They include GHG emissions over the life cycle, nitrogen and phosphorus runoff, and the quality of wildlife habitats. We apply our model to crop production in Finland. We find that under current biofuel production technology the case for promotion of biofuels is not as evident as has been generally thought. Only reed canary grass for biodiesel is unambiguously desirable, whereas biodiesel from rape seed and ethanol production from wheat and barley cause in most cases negative net impacts on the environment. Suggested policies in the US and the EU tend to improve slightly the environmental performance of biofuel production.
机译：我们研究了在考虑到其他环境影响后，气候效益是否有必要促进农业作物生产生物燃料的政策。我们为生物燃料政策的综合分析开发了通用的经济生态模型框架。农民决策的经济模型与生物物理模型相结合，该模型预测了耕作方式对作物产量和相关环境影响的影响。其中包括生命周期中的温室气体排放，氮和磷径流量以及野生生物栖息地的质量。我们将模型应用于芬兰的农作物生产。我们发现，在当前的生物燃料生产技术下，推广生物燃料的理由并不像人们普遍认为的那样明显。毫无疑问，只希望使用芦苇金丝雀草作为生物柴油，而在大多数情况下，油菜籽产生的生物柴油和小麦和大麦产生的乙醇都会对环境造成负面的净影响。美国和欧盟的政策建议倾向于稍微改善生物燃料生产的环境绩效。

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