Počet záznamů: 1
Climate control of terrestrial carbon exchange across biomes and continents
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SYSNO ASEP 0383149 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Climate control of terrestrial carbon exchange across biomes and continents Tvůrce(i) Yi, C. (US)
Ricciuto, D. (US)
Marek, Michal V. (UEK-B) RID, ORCID, SAICelkový počet autorů 151 Zdroj.dok. Environmental Research Letters. - : Institute of Physics Publishing - ISSN 1748-9326
Roč. 5, č. 3 (2010), s. 034007Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova NEE ; climate control ; terrestrial carbon sequestration ; temperature ; dryness ; eddy flux ; biomes ; photosynthesis ; respiration ; global carbon cycle Vědní obor RIV EH - Ekologie - společenstva CEZ AV0Z60870520 - UEK-B (2005-2011) UT WOS 000282273700008 DOI 10.1088/1748-9326/5/3/034007 Anotace 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. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2013
Počet záznamů: 1