Atmospheric factors influencing net ecosystem production of Norway spruce forest in Beskydy Mountains

0353718 - ÚVGZ 2011 CZ eng K - Konferenční příspěvek (tuzemská konf.)
Taufarová, Klára - Havránková, Kateřina - Czerný, Radek - Janouš, Dalibor
Atmospheric factors influencing net ecosystem production of Norway spruce forest in Beskydy Mountains.
Sborník příspěvků z mezinárodní konference "Bioklimatologické aspekty hodnocení procesů v krajině". Mikulov: Česká bioklimatologická společnost, 2008 - (Rožnovský, J.; Litschmann, T.). ISBN 978-80-86690-55-1.
[Bioklimatologické aspekty hodnocení procesů v krajině. Mikulov (CZ), 09.09.2008-11.09.2008]
Grant CEP: GA MŠMT 2B06068; GA MŽP(CZ) SP/2D1/93/07
Klíčová slova: atmospheric factors * daily net ecosystem production * eddy covariance
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie

Daily net ecosystem production values of Norway spruce forest at Experimental Ecological Research Site Bílý Kříž in Beskydy Mountains were estimated using eddy covariance technique. Norway spruce forest uptakes CO2 from the atmosphere during production season. During production seasons 2005-2007 mean daily net ecosystem production was 22 kg C ha-1, and mean production season duration was 240 days. During production seasons there occurred days with respiration higher than assimilation, thus the forest was source of the atmospheric carbon. There were 45, 68 and 39 days in production seasons 2005, 2006 and 2007, respectively, when the forest was carbon source. It was caused by 1) significant decrease of air temperature and low intensity of PAR at the beginning and end of production seasons; 2) low radiation in overcast days and 3) long dry period with high intensity of direct radiation and high air temperature during production seasons.
Trvalý link: http://hdl.handle.net/11104/0192880