The carbon budget of the northern cryosphere region

被引:53
作者
McGuire, A. David [1 ]
Macdonald, Robie W. [2 ]
Schuur, Edward A. G. [3 ]
Harden, Jennifer W. [4 ]
Kuhry, Peter [5 ]
Hayes, Daniel J. [6 ]
Christensen, Torben R. [7 ]
Heimann, Martin [8 ]
机构
[1] Univ Alaska Fairbanks, US Geol Survey, Alaska Cooperat Fish & Wildlife Res Unit, Fairbanks, AK 99775 USA
[2] Inst Ocean Sci, Dept Fisheries & Oceans, Sidney, BC V8L 4B2, Canada
[3] Univ Florida, Dept Biol, Gainesville, FL 32611 USA
[4] US Geol Survey, Menlo Pk, CA 94025 USA
[5] Stockholm Univ, Dept Phys Geog & Quaternary Geol, S-10691 Stockholm, Sweden
[6] Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA
[7] Lund Univ, Geobiosphere Sci Ctr, Lund, Sweden
[8] Max Planck Inst Biogeochem, Jena, Germany
基金
美国国家科学基金会;
关键词
CLIMATE-CHANGE; FORESTS; SOIL; VULNERABILITY; FEEDBACK; DIOXIDE; FLUXES; ALASKA; OCEAN; SINK;
D O I
10.1016/j.cosust.2010.05.003
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The northern cryosphere is undergoing substantial warming of permafrost and loss of sea ice. Release of stored carbon to the atmosphere in response to this change has the potential to affect the global climate system. Studies indicate that the northern cryosphere has been not only a substantial sink for atmospheric CO2 in recent decades, but also an important source of CH4 because of emissions from wetlands and lakes. Analyses suggest that the sensitivity of the carbon cycle of the region over the 21st Century is potentially large, but highly uncertain because numerous pathways of response will be affected by warming. Further research should focus on sensitive elements of the carbon cycle such as the consequences of increased fire disturbance, permafrost degradation, and sea ice loss in the northern cryosphere region.
引用
收藏
页码:231 / 236
页数:6
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