About: Diurnal and seasonal dynamics in temperature normalized stem CO2 efflux of Norway spruce

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Stem respiration is an important part of forest ecosystem CO2 flux. We measured stem CO2 efflux continuously by an automatic system in the Norway spruce forest planted in 1981. The respiration chambers were placed on eight trees in the height of 1.3 m and on two of them also in the heights of 3.0 and 4.5 m in the growing seasons 2006 - 2009. We measured also incident radiation, precipitations, transpiration flux, stem increment rate and stem temperature. Seasonal course of stem CO2 efflux normalized to 10°C (R10) followed the pattern of the stem growth. They increased in the beginning of season up to its maximum in July and then decreased. However, this dependence was disturbed by external factors especially by alternating of water stress and rain events. Rain events after a dry period caused increase in R10 up to 60%. We observed diurnal course of R10 with maxima during night hours. Oscillation of R10 had amplitude up to 50% of mean daily (24 hours) value of R10. Stem respiration is an important part of forest ecosystem CO2 flux. We measured stem CO2 efflux continuously by an automatic system in the Norway spruce forest planted in 1981. The respiration chambers were placed on eight trees in the height of 1.3 m and on two of them also in the heights of 3.0 and 4.5 m in the growing seasons 2006 - 2009. We measured also incident radiation, precipitations, transpiration flux, stem increment rate and stem temperature. Seasonal course of stem CO2 efflux normalized to 10°C (R10) followed the pattern of the stem growth. They increased in the beginning of season up to its maximum in July and then decreased. However, this dependence was disturbed by external factors especially by alternating of water stress and rain events. Rain events after a dry period caused increase in R10 up to 60%. We observed diurnal course of R10 with maxima during night hours. Oscillation of R10 had amplitude up to 50% of mean daily (24 hours) value of R10. (en)
Title	Diurnal and seasonal dynamics in temperature normalized stem CO2 efflux of Norway spruce Diurnal and seasonal dynamics in temperature normalized stem CO2 efflux of Norway spruce (en)
skos:prefLabel	Diurnal and seasonal dynamics in temperature normalized stem CO2 efflux of Norway spruce Diurnal and seasonal dynamics in temperature normalized stem CO2 efflux of Norway spruce (en)
skos:notation	RIV/67179843:_____/10:00343340!RIV11-MSM-67179843
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(2B06068), Z(AV0Z60870520)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Pavelka, Marian Dařenová, Eva Janouš, Dalibor
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Centrum výzkumu globální změny AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	254766
http://linked.open...ai/riv/idVysledku	RIV/67179843:_____/10:00343340
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	stem; respiration; Norway spruce; CO2 efflux (en)
http://linked.open.../riv/klicoveSlovo	stem Norway spruce CO2 efflux respiration
http://linked.open...ontrolniKodProRIV	[F11F1BD4A639]
http://linked.open...in/vavai/riv/obor	ED
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Evaluation, Verification and Interpretation of the environmental loads of the Czech Republic
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Dařenová, Eva Janouš, Dalibor Pavelka, Marian
http://linked.open...n/vavai/riv/zamer	Spatial and functional dynamics of biological, ecological and socio-economic systems interacting with global climatic change

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