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学科主题: 生物科学::普通生物学
题名: How have past fire disturbances contributed to the current carbon balance of boreal ecosystems?
作者: Yue, C (Yue, C.)1, 2; Ciais, P (Ciais, P.)2; Zhu, D (Zhu, D.)2; Wang, T (Wang, T.)1, 2; Peng, SS (Peng, S. S.)2; Piao, SL (Piao, S. L.)3, 4
通讯作者: Yue, C
刊名: BIOGEOSCIENCES
发表日期: 2016
DOI: 10.5194/bg-13-675-2016
卷: 13, 期:3, 页:675-690
收录类别: SCI
合作性质: 国内
文章类型: Article
英文摘要: Boreal fires have immediate effects on regional carbon budgets by emitting CO2 into the atmosphere at the time of burning, but they also have legacy effects by initiating a long-term carbon sink during post-fire vegetation recovery. Quantifying these different effects on the current-day pan-boreal (44-84 degrees N) carbon balance and quantifying relative contributions of legacy sinks by past fires is important for understanding and predicting the carbon dynamics in this region. Here we used the global dynamic vegetation model ORCHIDEE-SPITFIRE (Organising Carbon and Hydrology In Dynamic Ecosystems - SPread and InTensity of FIRE) to attribute the contributions by fires in different decades between 1850 and 2009 to the carbon balance of 2000-2009, taking into account the atmospheric CO2 change and climate change since 1850. The fire module of ORCHIDEE-SPITFIRE was turned off for each decade in turn and was also turned off before and after the decade in question in order to model the legacy carbon trajectory by fires in each past decade. We found that, unsurprisingly, fires that occurred in 2000-2009 are a carbon source (-0.17 Pg C yr(-1)) for the carbon balance of 2000-2009, whereas fires in all decades before 2000 contribute carbon sinks with a collective contribution of 0.23 Pg C yr(-1). This leaves a net fire sink effect of 0.06 Pg Cyr(-1), or 6.3% of the simulated regional carbon sink (0.95 Pg C yr(-1)). Further, fires with an age of 10-40 years (i.e., those that occurred during 1960-1999) contribute more than half of the total sink effect of fires. The small net sink effect of fires indicates that current-day fire emissions are roughly balanced out by legacy sinks. The future role of fires in the regional carbon balance remains uncertain and will depend on whether changes in fires and associated carbon emissions will exceed the enhanced sink effects of previous fires, both being strongly affected by global change.
语种: 英语
WOS记录号: WOS:000370973900004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7875
Appears in Collections:图书馆_期刊论文

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作者单位: 1.CNRS, UJF, Lab Glaciol & Geophys Environm, St Martin Dheres, France
2.LSCE CEA CNRS UVSQ, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France
3.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Earth Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China

Recommended Citation:
Yue, C ,Ciais, P ,Zhu, D ,et al. How have past fire disturbances contributed to the current carbon balance of boreal ecosystems?[J]. BIOGEOSCIENCES,2016,13(3):675-690.
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文件名: V.13(3) 675-690 2016.pdf
格式: Adobe PDF
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