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| Titel |
Thermal adaptation of net ecosystem exchange |
| VerfasserIn |
W. Yuan, Y. Luo, S. Liang, G. Yu, S. Niu, P. Stoy, J. Chen, A. R. Desai, A. Lindroth, C. M. Gough, R. Ceulemans, A. Arain, C. Bernhofer, B. Cook, D. R. Cook, D. Dragoni, B. Gielen, I. A. Janssens, B. Longdoz, H. Liu, M. Lund, G. Matteucci, E. Moors, R. L. Scott, G. Seufert, R. Varner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 8, no. 6 ; Nr. 8, no. 6 (2011-06-06), S.1453-1463 |
| Datensatznummer |
250005948
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| Publikation (Nr.) |
 copernicus.org/bg-8-1453-2011.pdf |
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| Zusammenfassung |
| Thermal adaptation of gross primary production and
ecosystem respiration has been well documented over broad thermal gradients.
However, no study has examined their interaction as a function of
temperature, i.e. the thermal responses of net ecosystem exchange of carbon
(NEE). In this study, we constructed temperature response curves of NEE
against temperature using 380 site-years of eddy covariance data at 72
forest, grassland and shrubland ecosystems located at latitudes ranging from
~29° N to 64° N. The response curves were used to define two
critical temperatures: transition temperature (Tb) at which ecosystem transfer
from carbon source to sink and optimal temperature (To) at
which carbon uptake is maximized. Tb was strongly correlated with
annual mean air temperature. To was strongly correlated with mean
temperature during the net carbon uptake period across the study ecosystems.
Our results imply that the net ecosystem exchange of carbon adapts to the
temperature across the geographical range due to intrinsic connections
between vegetation primary production and ecosystem respiration. |
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