Thompson R L, Patra P K, Chevallier F, Maksyutov S, Law R M, Ziehn T, van der Laan-Luijkx I T, Peters W, Ganshin A, Zhuravlev R, Maki T, Nakamura T, Shirai T, Ishizawa M, Saeki T, Machida T, Poulter B, Canadell J G, Ciais P
Norsk Institutt for Luftforskning (NILU), Kjeller, Norway.
Department of Environmental Geochemical Cycle Research, Japan Agency for Marine Earth Science and Technology (JAMSTEC), Yokohama 236-0001, Japan.
Nat Commun. 2016 Feb 25;7:10724. doi: 10.1038/ncomms10724.
Increasing atmospheric carbon dioxide (CO2) is the principal driver of anthropogenic climate change. Asia is an important region for the global carbon budget, with 4 of the world's 10 largest national emitters of CO2. Using an ensemble of seven atmospheric inverse systems, we estimated land biosphere fluxes (natural, land-use change and fires) based on atmospheric observations of CO2 concentration. The Asian land biosphere was a net sink of -0.46 (-0.70-0.24) PgC per year (median and range) for 1996-2012 and was mostly located in East Asia, while in South and Southeast Asia the land biosphere was close to carbon neutral. In East Asia, the annual CO2 sink increased between 1996-2001 and 2008-2012 by 0.56 (0.30-0.81) PgC, accounting for ∼35% of the increase in the global land biosphere sink. Uncertainty in the fossil fuel emissions contributes significantly (32%) to the uncertainty in land biosphere sink change.
大气中二氧化碳（CO₂）含量的增加是人为气候变化的主要驱动因素。亚洲是全球碳预算的重要区域，全球10大CO₂排放国中有4个位于亚洲。我们利用7个大气反演系统，基于对CO₂浓度的大气观测，估算了陆地生物圈通量（自然、土地利用变化和火灾）。1996年至2012年期间，亚洲陆地生物圈每年净吸收-0.46（-0.70至-0.24）PgC（中位数和范围），主要集中在东亚，而南亚和东南亚的陆地生物圈接近碳中性。在东亚，1996 - 2001年至2008 - 2012年期间，每年的CO₂吸收量增加了0.56（0.30至0.81）PgC，约占全球陆地生物圈吸收量增加的35%。化石燃料排放的不确定性对陆地生物圈吸收量变化的不确定性有显著贡献（32%）。
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