Net carbon dioxide losses of northern ecosystems in response to autumn warming
Shilong Piao, Philippe Ciais, Pierre Friedlingstein, Philippe Peylin, Markus Reichstein, Sebastiaan Luyssaert, Hank Margolis, Jingyun Fang, Alan Barr, Anping Chen, Achim Grelle, David Y. Hollinger, Tuomas Laurila, Anders Lindroth, Andrew D. Richardson & Timo Vesala
Nature 451, 49-52(3 January 2008)
This study finds that the duration of the net carbon uptake period (CUP) in northern ecosystems has on average decreased due to warmer autumn temperatures. Simulations and observations indicate that northern terrestrial ecosystems may currently lose carbon dioxide in response to autumn warming, with a sensitivity of about 0.2 PgC °C-1, offsetting 90% of the increased carbon dioxide uptake during spring. If future autumn warming occurs at a faster rate than in spring, the ability of northern ecosystems to sequester carbon may be diminished earlier than previously suggested.
Manuscript and Presentations
- Access the paper from Nature http://www.nature.com/nature
- Request a copy of the manuscript from the authors:
Shiang Piao, ShiLong.Piao@lsce.ipsl.fr
Philippe Ciais, email@example.com
- Download an extended presentation with the main findings of this study:
- For additional information on recent carbon trends and the global carbon budget updated to 2006, download the following presentation:
Press Release and Media Coverage
|Illustrative Photos (available free if credited as specified)|
Mont Wright – Northern hardwood forest near Quebec City, Canada.
Photo credit: Marc André Giasson
Mixed Beech forest in the mountains of warm temperate region in China. Photo
credit: Zhehao Shen
Deciduous broad leaf forests dominated by Betula Platyphylla in Saihanba area of northern China in Autumn. Photo credit: Wei Wang
Tour-Bluets - Flux tower on a recently harvest boreal black spruce site with lowbush blueberry ground cover, Chibougamau, Quebec.
Photo credit: Onil Bergeron