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DOI	10.1126/science.aaa1668
	The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink
	Ahlström A.; Raupach M.R.; Schurgers G.; Smith B.; Arneth A.; Jung M.; Reichstein M.; Canadell J.G.; Friedlingstein P.; Jain A.K.; Kato E.; Poulter B.; Sitch S.; Stocker B.D.; Viovy N.; Wang Y.P.; Wiltshire A.; Zaehle S.; Zeng N.
发表日期	2015
ISSN	0036-8075
起始页码	895
结束页码	899
卷号	348 期号:6237
英文摘要	The growth rate of atmospheric carbon dioxide (CO2) concentrations since industrialization is characterized by large interannual variability, mostly resulting from variability in CO2 uptake by terrestrial ecosystems (typically termed carbon sink). However, the contributions of regional ecosystems to that variability are not well known. Using an ensemble of ecosystem and landsurface models and an empirical observation-based product of global gross primary production, we show that the mean sink, trend, and interannual variability in CO2 uptake by terrestrial ecosystems are dominated by distinct biogeographic regions. Whereas the mean sink is dominated by highly productive lands (mainly tropical forests), the trend and interannual variability of the sink are dominated by semi-arid ecosystems whose carbon balance is strongly associated with circulation-driven variations in both precipitation and temperature.
英文关键词	carbon dioxide; carbon dioxide; carbon balance; carbon dioxide; carbon sink; concentration (composition); net primary production; precipitation (climatology); semiarid region; temperature; terrestrial ecosystem; trend analysis; tropical forest; Article; biogeographic region; carbon balance; carbon sink; ecosystem; environmental temperature; growth rate; industrialization; precipitation; priority journal; semiarid climate; surface property; tropical rain forest; atmosphere; carbon cycle; chemistry; forest; grassland; Atmosphere; Carbon Cycle; Carbon Dioxide; Forests; Grassland
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/242781
作者单位	Departmentof Physical Geography and Ecosystem Science, Lund University, Lund, 223 62, Sweden; Department of Earth System Science, School of Earth, Energy and Environmental Sciences, Stanford University, Stanford, 94305, United States; Climate Change Institute, Australian National University, Canberra, ACT 0200, Australia; Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, 1350, Denmark; Institutefor Meteorology and Climate Research, Atmospheric Environmental Research, Karlsruhe Institute for Technology, Garmisch-Partenkirchen, 82476, Germany; Biogeochemical Intergration Department, Max Planck Institute for Biogeochemistry, Jena, 07745, Germany; Global Carbon Project, CSIRO Oceans and Atmospheric Flagship, Canberra, ACT, Australia; Collegeof Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, United Kingdom; Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Insti...
推荐引用方式 GB/T 7714	Ahlström A.,Raupach M.R.,Schurgers G.,et al. The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink[J],2015,348(6237).
APA	Ahlström A..,Raupach M.R..,Schurgers G..,Smith B..,Arneth A..,...&Zeng N..(2015).The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink.Science,348(6237).
MLA	Ahlström A.,et al."The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink".Science 348.6237(2015).