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Producing Biofuels in Low-Income Countries: An Integrated Environmental and Economic Assessment for Tanzania

机译：在低收入国家生产生物燃料：坦桑尼亚的环境与经济综合评估

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This paper jointly evaluates the greenhouse gas emissions and economic impacts from producing biofuels in Tanzania. Sequentially-linked models capture natural resource constraints; emissions from land use change; economywide growth linkages; and household poverty. Results indicate that there are economic incentives to convert unused lands to sugarcane-ethanol production, but only grasslands (not forests) have a reasonable carbon payback period. There are also strong socioeconomic reasons to involve smallholders in feedstock production in order to reduce rural poverty, especially since our results indicate that biofuels have little effect on food production. Yet smallholders require more land than large-scale plantations and so face more binding natural resource and emissions constraints. Overall, environmental constraints alter the socioeconomically optimal biofuel strategy for Tanzania by limiting potential poverty reduction. Unlike previous studies, our integrated assessment suggests that a mixed farming system with greater emphasis on large-scale plantations is more appropriate for producing sugarcane-ethanol in Tanzania.
机译：本文共同评估了坦桑尼亚生产生物燃料所产生的温室气体排放和经济影响。顺序链接的模型捕获了自然资源的限制；土地用途变化产生的排放；经济范围内的增长联系；和家庭贫困。结果表明，有经济动机将未利用的土地转化为甘蔗乙醇生产，但只有草原（而非森林）才具有合理的碳回收期。也有很强的社会经济原因要使小农户参与原料生产以减少农村贫困，特别是因为我们的结果表明生物燃料对粮食生产的影响很小。然而，小农户比大型种植园需要更多的土地，因此面临着更具约束力的自然资源和排放限制。总体而言，环境限制通过限制潜在的减贫而改变了坦桑尼亚社会经济上最佳的生物燃料战略。与以前的研究不同，我们的综合评估表明，更加重视大规模种植的混合农业体系更适合在坦桑尼亚生产甘蔗乙醇。

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