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Dynamics of temperature normalized stem CO2 efflux in Norway Spruce stand
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SYSNO ASEP 0366891 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Dynamics of temperature normalized stem CO2 efflux in Norway Spruce stand Author(s) Dařenová, Eva (UEK-B) RID, ORCID, SAI
Pavelka, Marian (UEK-B) RID, ORCID, SAI
Janouš, Dalibor (UEK-B) RID, SAINumber of authors 3 Source Title Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. - : Mendelova univerzita - ISSN 1211-8516
Roč. 59, č. 6 (2011), s. 121-125Number of pages 6 s. Language eng - English Country CZ - Czech Republic Keywords soil CO2 efflux ; R10 ; Picea abies ; precipitations ; stem growth Subject RIV EH - Ecology, Behaviour R&D Projects ED1.1.00/02.0073 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) SP/2D1/70/08 GA MŽP - Ministry of Environment (MŽP) IAA300420803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) 2B06068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z60870520 - UEK-B (2005-2011) Annotation Continuous measurements of stem CO2 efflux were carried out by an automated system during the growing season in 2006–2009. Further measured characteristics were stem temperature, stem increment and precipitations. Stem CO2 efflux was in tight relationship with changes in temperature with the mean coefficient of determination of 0.76. This infers that temperature was the main factor driving changes in CO2 efflux during the season. To eliminate effect of temperature and determine other factors influencing stem CO2 efflux, CO2 efflux was normalized for temperature of 10 °C (R10). Basic seasonal course of R10 followed the pattern of stem growth rate with its maxima in June and July. The other factor effect, which was possible to determine, was presence of rainfall. Rainfall strong enough caused mostly increase in R10. This effect was the most significant when the R10 course had a decreasing trend in the second part of the growing season. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2012
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