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Climate control of terrestrial carbon exchange across biomes and continents

SYSNO ASEP	0383149
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Climate control of terrestrial carbon exchange across biomes and continents
Author(s)	Yi, C. (US) Ricciuto, D. (US) Marek, Michal V. (UEK-B)_{RID, ORCID, SAI}
Number of authors	151
Source Title	Environmental Research Letters. - : Institute of Physics Publishing - ISSN 1748-9326 Roč. 5, č. 3 (2010), s. 034007
Number of pages	16 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	NEE ; climate control ; terrestrial carbon sequestration ; temperature ; dryness ; eddy flux ; biomes ; photosynthesis ; respiration ; global carbon cycle
Subject RIV	EH - Ecology, Behaviour
CEZ	AV0Z60870520 - UEK-B (2005-2011)
UT WOS	000282273700008
DOI	10.1088/1748-9326/5/3/034007
Annotation	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 degrees N). The sensitivity of NEE to mean annual temperature breaks down at similar to 16 degrees 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.
Workplace	Global Change Research Institute
Contact	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Year of Publishing	2013

Number of the records: 1