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Climate control of terrestrial carbon exchange across biomes and continents

Yi, Chuixiang, Riccuito, Daniel, Li, Runze, Wolbeck, John, Nilsson, Mats, Aires, Luis, Albertson, John D., Ammann, Christof, Arain, M. Altaf, De Araujo, Alessandro C., Aubinet, Marc, Aurela, Mika, Barcza, Zoltan, Barr, Alan, Berbigier, Paul, Beringer, Jason, Bernhofer, Christian, Black, Andrew T., Bolstad, Paul V., Hutley, Lindsay B. and et al. (2010). Climate control of terrestrial carbon exchange across biomes and continents. Environmental Research Letters,5(3):2-11.

Document type: Journal Article
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IRMA ID 81704288xPUB148
Title Climate control of terrestrial carbon exchange across biomes and continents
Author Yi, Chuixiang
Riccuito, Daniel
Li, Runze
Wolbeck, John
Nilsson, Mats
Aires, Luis
Albertson, John D.
Ammann, Christof
Arain, M. Altaf
De Araujo, Alessandro C.
Aubinet, Marc
Aurela, Mika
Barcza, Zoltan
Barr, Alan
Berbigier, Paul
Beringer, Jason
Bernhofer, Christian
Black, Andrew T.
Bolstad, Paul V.
Hutley, Lindsay B.
et al.
Journal Name Environmental Research Letters
Publication Date 2010
Volume Number 5
Issue Number 3
ISSN 1748-9326   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-78049506788
Start Page 2
End Page 11
Total Pages 10
HERDC Category C1 - Journal Article (DEST)
Abstract Understanding the relationships between climate and carbon exchange by terrestrial ecosystems is critical to predict future levels of atmospheric carbon dioxide because of the potential accelerating effects of positive climate–carbon cycle feedbacks. However, directly observed relationships between climate and terrestrial CO2 exchange with the atmosphere across biomes and continents are lacking. Here we present data describing the relationships between net ecosystem exchange of carbon (NEE) and climate factors as measured using the eddy covariance method at 125 unique sites in various ecosystems over six continents with a total of 559 site-years. We find that NEE observed at eddy covariance sites is

(1) a strong function of mean annual temperature at mid- and high-latitudes,
(2) a strong function of dryness at mid- and low-latitudes, and
(3) a function of both temperature and dryness around the mid-latitudinal belt (45◦N).

The sensitivity of NEE to mean annual temperature breaks down at ∼16 ◦C (a threshold value of mean annual temperature), above which no further increase of CO2 uptake with temperature was observed and dryness influence overrules temperature influence.
Keywords NEE
climate controle
terrestrial carbon sequestration
eddy flux
global caron cycle
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