Reply to comment on ‘Does replacing coal with wood lower CO 2 emissions? Dynamic lifecycle analysis of wood bioenergy’
Reply to comment on ‘Does replacing coal with wood lower CO 2 emissions? Dynamic lifecycle analysis of wood bioenergy’
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回复关于“用木材代替煤炭是否会降低 CO 2 排放量？”的评论
DOI：
10.1088/1748-9326/aaf354
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发表时间：
2018
影响因子：
6.7
通讯作者：
Rooney-Varga, Juliette N
中科院分区：
文献类型：
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作者：
Sterman, John D;Siegel, Lori;Rooney-Varga, Juliette N
我们回应Prisley等人（2018年环境。保留信函13 128002）Sterman et al（2018 Environ.保留信函13 015007），该研究发现，即使木材取代煤炭，使用木材发电也会使气候变化恶化至少到2100年。这一结果的产生是因为：（1）木材每千瓦时产生的二氧化碳比煤炭多，产生了初始的碳债;（2）采伐土地的再生可以从大气中去除二氧化碳，但需要时间，而且不确定;（3）在碳债偿还之前，大气中的二氧化碳含量较高，在新的增长偿还了初始的碳债之后很长一段时间，增加了辐射强迫，恶化了气候变化。我们纠正了Prisley等人的批评中的几个错误，并表明我们的结果对他们喜欢的收获和土地管理实践是稳健的。
We respond to Prisley et al's (2018 Environ. Res. Lett. 13 128002) critique of Sterman et al (2018 Environ. Res. Lett. 13 015007), which found that using wood to produce electricity can worsen climate change at least through 2100, even if wood displaces coal. The result arises because (1) wood generates more CO 2/kWh than coal, creating an initial carbon debt;(2) regrowth of harvested land can remove CO 2 from the atmosphere, but takes time and is not certain; and (3) until the carbon debt is repaid, atmospheric CO 2 is higher, increasing radiative forcing and worsening climate change long after the initial carbon debt is repaid by new growth. We correct several errors in Prisley et al's critique, and show that our results are robust to the harvest and land management practices they prefer.