Počet záznamů: 1

Near-distance imaging spectroscopy investigating chlorophyll fluorescence and photosynthetic activity of grassland in the daily course

SYSNO ASEP	0340933
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Near-distance imaging spectroscopy investigating chlorophyll fluorescence and photosynthetic activity of grassland in the daily course
Tvůrce(i)	Ač, Alexander (UEK-B)_{RID, ORCID, SAI} Marek, Michal V. (UEK-B)_{RID, ORCID, SAI} Malenovský, Z. (CH) Hanuš, Jan (UEK-B)_{RID, SAI, ORCID} Urban, Otmar (UEK-B)_{RID, ORCID, SAI} Tomášková, Ivana (UEK-B)
Celkový počet autorů	6
Zdroj.dok.	Functional Plant Biology. - : CSIRO Publishing - ISSN 1445-4408 -, - (2009), od 1006 do 1015
Poč.str.	9 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	imaging spectroscopy ; chlorophyll fluorescence ; grassland
Vědní obor RIV	ED - Fyziologie
CEP	2B06068 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
CEZ	AV0Z60870520 - UEK-B (2005-2011)
UT WOS	000271464600019
Anotace	Detection of grassland canopy chlorophyll fluorescence (Chl-F) conducted with an imaging spectroradiometer provided evidence of potential remote sensing estimation of steady-state Chl-F(Chl-Fs). Simultaneously, measurements of Chl-F and total chlorophyll content (Chla + b) were made on a single leaf at ground level were collected. A specifically designed ‘shade removal’ experiment revealed the influence of dynamic physiological plant processes on hyperspectral reflectance of three wavelengths: 532, 686 and 740 nm. Based on this information, the vegetation indexes R686/R630, R740/R800 and PRI calculated as (R532–R570)/(R532+R570) were tested for statistical significance with directly measured Chl-F parameters (maximum fluorescence yield, Fv/Fm; steady-state chlorophyll fluorescence, Chl-Fs and actual quantum yield, KII). The grassland species under investigation were: Festuca rubra agg. (L.), Hieracium sp., Plantago sp., Nardus stricta (L.) and Jacea pseudophrygia (C.A. Meyer).
Pracoviště	Ústav výzkumu globální změny
Kontakt	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Rok sběru	2010

Počet záznamů: 1