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Ethanol Production, Food and Forests

机译:乙醇生产,粮食和森林

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摘要

This paper investigates the direct and indirect impacts of ethanol production on land use, deforestation and food production. A partial equilibrium model of a national economy with two sectors and two regions, one of which includes a forest, is developed. It analyses how an exogenous increase in the ethanol price affects input allocation (land and labor) between sectors (energy crop and food). The total effect of ethanol prices on food production and deforestation is decomposed into three partial effects. First, the well-documented effect of direct land competition between rival uses arises; it increases deforestation and decreases food production. Second, an indirect displacement of food production across regions, possibly provoked by the reaction of international food prices, increases deforestation and reduces the food sector's output. Finally, labor mobility between sectors and regions tends to decrease food production but also deforestation. The total impact of ethanol production on food production is negative while there is an ambiguous impact on deforestation.
机译:本文研究了乙醇生产对土地利用,森林砍伐和粮食生产的直接和间接影响。建立了具有两个部门和两个区域的国民经济的部分均衡模型,其中一个包括森林。它分析了乙醇价格的外源性上涨如何影响部门(能源作物和粮食)之间的投入分配(土地和劳动力)。乙醇价格对粮食生产和森林砍伐的总影响被分解为三个部分影响。首先,出现了有据可查的竞争用途之间直接土地竞争的效果;它增加了森林砍伐并减少了粮食产量。其次,区域间粮食生产的间接转移,可能是由于国际粮食价格的反应而引起的,加剧了森林砍伐并减少了粮食部门的产出。最后,部门和地区之间的劳动力流动往往会降低粮食产量,但也会导致森林砍伐。乙醇生产对粮食生产的总影响为负面,而对森林砍伐的影响却不明确。

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