Geography
Document Type
Article
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 CO2exchange 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 CO,.2uptake with temperature was observed and dryness influence overrules temperature influence. © 2010 lOP Publishing Ltd.
Publication Title
Environmental Research Letters
Publication Date
1-1-2010
Volume
5
Issue
3
DOI
10.1088/1748-9326/5/3/034007
Keywords
biomes, climate control, dryness, eddy flux, global carbon cycle, NEE, photosynthesis, respiration, temperature, terrestrial carbon sequestration
Repository Citation
Yi, Chuixiang; Li, Runze; Wolbeck, John; Xu, Xiyan; Nilsson, Mats; Aires, Luis; Albertson, John D.; Ammann, Christof; Arain, M. Altaf; De Araujo, Alessandro C.; Aubinet, Marc; Aurela, Mika; Barcza, Zoltán; Barr, Alan; Berbigier, Paul; Beringer, Jason; Bernhofer, Christian; Black, Andrew T.; Bolstad, Paul V.; Bosveld, Fred C.; Broadmeadow, Mark S.J.; Buchmann, Nina; Burns, Sean P.; Cellier, Pierre; Chen, Jingming; Chen, Jiquan; Ciais, Philippe; Clement, Robert; Cook, Bruce D.; Curtis, Peter S.; Dail, D. Bryan; Dellwik, Ebba; and Williams, Christopher A., "Climate control of terrestrial carbon exchange across biomes and continents" (2010). Geography. 916.
https://commons.clarku.edu/faculty_geography/916
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright Conditions
Published source must be acknowledged with citation:
Yi, Chuixiang, et al. "Climate control of terrestrial carbon exchange across biomes and continents." Environmental Research Letters 5.3 (2010): 034007.
