About: Spectral composition of photosynthetically active radiation penetrating into a Norway spruce canopy: the opposite dynamics of the blue/red spectral ratio during clear and overcast days

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About: Spectral composition of photosynthetically active radiation penetrating into a Norway spruce canopy: the opposite dynamics of the blue/red spectral ratio during clear and overcast days Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The spectral composition of PAR during clear and overcast days was studied above the canopy and at two layers of a dense Norway spruce stand. Whereas the spectral composition of PAR incoming on the canopy surface during cloudy days was almost independent of the solar elevation angle, the proportion of the blue-green spectral region of PAR was significantly reduced at low elevation angles during days with prevailing direct radiation. The penetration of diffuse radiation into the canopy resulted in a slight reduction of the blue region proportion. On the contrary, under clear sky conditions the penetration of blue and red radiation was dependent on the solar elevation in an opposite manner in comparison with the spectral composition of PAR incident on canopy. We suggest that the blue enhancement of the spectrum within the Norway spruce canopy during clear days is due to a specific spatial arrangement of the assimilatory apparatus of a coniferous stand. The spectral composition of PAR during clear and overcast days was studied above the canopy and at two layers of a dense Norway spruce stand. Whereas the spectral composition of PAR incoming on the canopy surface during cloudy days was almost independent of the solar elevation angle, the proportion of the blue-green spectral region of PAR was significantly reduced at low elevation angles during days with prevailing direct radiation. The penetration of diffuse radiation into the canopy resulted in a slight reduction of the blue region proportion. On the contrary, under clear sky conditions the penetration of blue and red radiation was dependent on the solar elevation in an opposite manner in comparison with the spectral composition of PAR incident on canopy. We suggest that the blue enhancement of the spectrum within the Norway spruce canopy during clear days is due to a specific spatial arrangement of the assimilatory apparatus of a coniferous stand. (en)
Title	Spectral composition of photosynthetically active radiation penetrating into a Norway spruce canopy: the opposite dynamics of the blue/red spectral ratio during clear and overcast days Spectral composition of photosynthetically active radiation penetrating into a Norway spruce canopy: the opposite dynamics of the blue/red spectral ratio during clear and overcast days (en)
skos:prefLabel	Spectral composition of photosynthetically active radiation penetrating into a Norway spruce canopy: the opposite dynamics of the blue/red spectral ratio during clear and overcast days Spectral composition of photosynthetically active radiation penetrating into a Norway spruce canopy: the opposite dynamics of the blue/red spectral ratio during clear and overcast days (en)
skos:notation	RIV/67179843:_____/07:00341991!RIV10-MZP-67179843
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA526/03/1104), P(SM/640/18/03), Z(MSM6215648902)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Janouš, Dalibor Marková, Irena
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	451549
http://linked.open...ai/riv/idVysledku	RIV/67179843:_____/07:00341991
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	photosynthetically active radiation; spectral composition; diffuse index; solar elevation; Norway spruce canopy (en)
http://linked.open.../riv/klicoveSlovo	solar elevation Norway spruce canopy spectral composition photosynthetically active radiation diffuse index
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[92C17BEAD5CD]
http://linked.open...i/riv/nazevZdroje	Trees: structure and function
http://linked.open...in/vavai/riv/obor	GK
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	CzechCarbo - Carbon cycle study focused on the terrestrical ecosystems in the Czech republic in connection on the CARBOEUROPE project Transformation of Solar Energy in Forest Stands, the Tool for the Bioaccumulation of Atmospheric Carbon
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	21
http://linked.open...iv/tvurceVysledku	Janouš, Dalibor Marková, Irena Navrátil, M. Špunda, V.
http://linked.open...n/vavai/riv/zamer	Forest and Wood: the support of functionally integrated forest management and use of wood as a renewable raw material
issn	0931-1890
number of pages	10 (xsd:int)

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