文章基本信息

标题：Global spatially explicit CO₂ emission metrics for forest bioenergy
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作者：Francesco Cherubini ; Mark Huijbregts ; Georg Kindermann 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2016
卷号：6
DOI：10.1038/srep20186
出版社：Springer Nature
摘要：Emission metrics aggregate climate impacts of greenhouse gases to common units such as CO₂-equivalents (CO₂-eq.). Examples include the global warming potential (GWP), the global temperature change potential (GTP) and the absolute sustained emission temperature (aSET). Despite the importance of biomass as a primary energy supplier in existing and future scenarios, emission metrics for CO₂ from forest bioenergy are only available on a case-specific basis. Here, we produce global spatially explicit emission metrics for CO₂ emissions from forest bioenergy and illustrate their applications to global emissions in 2015 and until 2100 under the RCP8.5 scenario. We obtain global average values of 0.49 ± 0.03 kgCO₂-eq. kgCO₂⁻¹ (mean ± standard deviation) for GWP, 0.05 ± 0.05 kgCO₂-eq. kgCO₂⁻¹ for GTP, and 2.14·10⁻¹⁴ ± 0.11·10⁻¹⁴ °C (kg yr⁻¹)⁻¹ for aSET. We explore metric dependencies on temperature, precipitation, biomass turnover times and extraction rates of forest residues. We find relatively high emission metrics with low precipitation, long rotation times and low residue extraction rates. Our results provide a basis for assessing CO₂ emissions from forest bioenergy under different indicators and across various spatial and temporal scales.