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The potential of a bioeconomy to reduce Brazilian GHG emissions towards 2030: a CGE‐based life cycle analysis
Biofuels, Bioproducts and Biorefining ( IF 3.9 ) Pub Date : 2019-11-21 , DOI: 10.1002/bbb.2064
Pedro G. Machado 1 , Marcelo Cunha 2 , Arnaldo Walter 3 , André Faaij 4 , Joaquim J. M. Guilhoto 5
Affiliation  

Brazil is one of the largest emitters of greenhouse gases in the world with most of its emissions coming from the land use, land use change, and forestry (LULUCF) sector. New commitments have been set by the Paris Agreement and are reflected in the country's Nationally Determined Contribution (NDC). The Brazilian NDC has three main pillars to reduce emissions: increasing the share of biomass in the total primary energy supply to 18%, reducing deforestation, and achieving 45% of renewable energy in the energy mix. It is important to enlarge the share of biomass in the Brazilian economy, but it is also important to assess the potential impacts on deforestation in order to set the right strategy eventually. This study is thus an effort to investigate the contributions of a biobased economy to reduce Brazilian emissions, considering the broader concept of the bioeconomy, using biomass for energy, chemicals, and materials. To satisfy the objectives of the project, especially those related to its interest in economy-wide changes in feedstock (from fossil to biobased), computable general equilibrium modeling (CGE) was chosen as the basic methodology integrated with an economic input–output life cycle analysis (EIO-LCA). Results show that the impacts of the bioeconomy scenarios are positive but not sufficiently high to reduce the estimated emissions drastically. Emissions by the energy sector produce the highest reductions (7.5%) but the 12% increase in the LULUCF sector offsets those reduction.

中文翻译:

到 2030 年,生物经济在减少巴西温室气体排放方面的潜力:基于 CGE 的生命周期分析

巴西是世界上最大的温室气体排放国之一,其大部分排放来自土地利用、土地利用变化和林业 (LULUCF) 部门。《巴黎协定》制定了新的承诺,并反映在该国的国家自主贡献 (NDC) 中。巴西国家自主贡献减少排放的三大支柱是:将生物质在一次能源供应总量中的份额提高到 18%,减少森林砍伐,以及在能源结构中实现可再生能源的 45%。扩大生物质在巴西经济中的份额很重要,但评估对森林砍伐的潜在影响以最终制定正确的战略也很重要。因此,这项研究旨在调查生物基经济对减少巴西排放的贡献,考虑到更广泛的生物经济概念,将生物质用于能源、化学品和材料。为了满足该项目的目标,尤其是那些与整个经济范围内的原料变化(从化石到生物基)相关的目标,可计算一般均衡模型 (CGE) 被选为与经济投入产出生命周期相结合的基本方法分析(EIO-LCA)。结果表明,生物经济情景的影响是积极的,但不足以大幅减少估计的排放量。能源部门的排放量减少幅度最大(7.5%),但 LULUCF 部门 12% 的增加抵消了这些减少量。尤其是那些与经济范围内的原料变化(从化石到生物基)相关的问题,可计算一般均衡模型 (CGE) 被选为与经济投入产出生命周期分析 (EIO-LCA) 相结合的基本方法。结果表明,生物经济情景的影响是积极的,但不足以大幅减少估计的排放量。能源部门的排放量减少幅度最大(7.5%),但 LULUCF 部门 12% 的增加抵消了这些减少量。尤其是那些与经济范围内的原料变化(从化石到生物基)相关的问题,可计算一般均衡模型 (CGE) 被选为与经济投入产出生命周期分析 (EIO-LCA) 相结合的基本方法。结果表明,生物经济情景的影响是积极的,但不足以大幅减少估计的排放量。能源部门的排放量减少幅度最大(7.5%),但 LULUCF 部门 12% 的增加抵消了这些减少量。结果表明,生物经济情景的影响是积极的,但不足以大幅减少估计的排放量。能源部门的排放量减少幅度最大(7.5%),但 LULUCF 部门 12% 的增加抵消了这些减少量。结果表明,生物经济情景的影响是积极的,但不足以大幅减少估计的排放量。能源部门的排放量减少最多(7.5%),但 LULUCF 部门 12% 的增加抵消了这些减少。
更新日期:2019-11-21
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