Relation of Chlorophyll Fluorescence Sensitive Reflectance Ratios to Carbon Flux Measurements of Montanne Grassland and Norway Spruce Forest Ecosystems in the Temperate Zone

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F12%3A43883646" target="_blank" >RIV/60076658:12310/12:43883646 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67179843:_____/12:00377790 RIV/61988987:17310/12:A13015XY

Výsledek na webu

<a href="http://dx.doi.org/10.1100/2012/705872" target="_blank" >http://dx.doi.org/10.1100/2012/705872</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1100/2012/705872" target="_blank" >10.1100/2012/705872</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relation of Chlorophyll Fluorescence Sensitive Reflectance Ratios to Carbon Flux Measurements of Montanne Grassland and Norway Spruce Forest Ecosystems in the Temperate Zone

Popis výsledku v původním jazyce

We explored ability of reflectance vegetation indexes (VIs) related to chlorophyll fluorescence emission (R-686/R-630, R-740/R-800) and de-epoxidation state of xanthophyll cycle pigments (PRI, calculated as (R-531 - R-570)/(R-531 - R-570)) to track changes in the CO2 assimilation rate and Light Use Efficiency (LUE) in montane grassland and Norway spruce forest ecosystems, both at leaf and also canopy level. VIs were measured at two research plots using a ground-based high spatial/spectral resolution imaging spectroscopy technique. No significant relationship between VIs and leaf light-saturated CO2 assimilation (A(MAX)) was detected in instantaneous measurements of grassland under steady-state irradiance conditions. Once the temporal dimension and daily irradiance variation were included into the experimental setup, statistically significant changes in VIs related to tested physiological parameters were revealed. Delta PRI and Delta(R-686/R-630) of grassland plant leaves under dark-to-

Název v anglickém jazyce

Relation of Chlorophyll Fluorescence Sensitive Reflectance Ratios to Carbon Flux Measurements of Montanne Grassland and Norway Spruce Forest Ecosystems in the Temperate Zone

Popis výsledku anglicky

We explored ability of reflectance vegetation indexes (VIs) related to chlorophyll fluorescence emission (R-686/R-630, R-740/R-800) and de-epoxidation state of xanthophyll cycle pigments (PRI, calculated as (R-531 - R-570)/(R-531 - R-570)) to track changes in the CO2 assimilation rate and Light Use Efficiency (LUE) in montane grassland and Norway spruce forest ecosystems, both at leaf and also canopy level. VIs were measured at two research plots using a ground-based high spatial/spectral resolution imaging spectroscopy technique. No significant relationship between VIs and leaf light-saturated CO2 assimilation (A(MAX)) was detected in instantaneous measurements of grassland under steady-state irradiance conditions. Once the temporal dimension and daily irradiance variation were included into the experimental setup, statistically significant changes in VIs related to tested physiological parameters were revealed. Delta PRI and Delta(R-686/R-630) of grassland plant leaves under dark-to-

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SCIENTIFIC WORLD JOURNAL

ISSN

1537-744X

e-ISSN

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Svazek periodika

"Neuveden"

Číslo periodika v rámci svazku

705872

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

"nestránkováno"

Kód UT WoS článku

000307458300001

EID výsledku v databázi Scopus

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