Header

UZH-Logo

Maintenance Infos

Red and far red sun-induced chlorophyll fluorescence as a measure of plant photosynthesis


Rossini, Micol; Nedbal, L; Guanter, Luis; Ač, Alexander; Alonso, Luis; Burkart, Andreas; Cogliati, S; Colombo, R; Damm, Alexander; Drusch, M; Hanuš, Jan; Janoutova, R; Julitta, T; Kokkalis, P; Moreno, J; Novotný, Jan; Panigada, C; Pinto, Francisco; Schickling, Anke; Schüttemeyer, D; Zemek, F; Rascher, Uwe (2015). Red and far red sun-induced chlorophyll fluorescence as a measure of plant photosynthesis. Geophysical Research Letters, 42(6):1632-1639.

Abstract

Remote estimation of Sun-induced chlorophyll fluorescence emitted by terrestrial vegetation can provide an unparalleled opportunity to track spatiotemporal variations of photosynthetic efficiency. Here we provide the first direct experimental evidence that the two peaks of the chlorophyll fluorescence spectrum can be accurately mapped from high-resolution radiance spectra and that the signal is linked to variations in actual photosynthetic efficiency. Red and far red fluorescence measured using a novel airborne imaging spectrometer over a grass carpet treated with an herbicide known to inhibit photosynthesis was significantly higher than the corresponding signal from an equivalent untreated grass carpet. The reflectance signal of the two grass carpets was indistinguishable, confirming that the fast dynamic changes in fluorescence emission were related to variations in the functional status of actual photosynthesis induced by herbicide application. Our results from a controlled experiment at the local scale illustrate the potential for the global mapping of terrestrial photosynthesis through space-borne measurements of chlorophyll fluorescence.

Abstract

Remote estimation of Sun-induced chlorophyll fluorescence emitted by terrestrial vegetation can provide an unparalleled opportunity to track spatiotemporal variations of photosynthetic efficiency. Here we provide the first direct experimental evidence that the two peaks of the chlorophyll fluorescence spectrum can be accurately mapped from high-resolution radiance spectra and that the signal is linked to variations in actual photosynthetic efficiency. Red and far red fluorescence measured using a novel airborne imaging spectrometer over a grass carpet treated with an herbicide known to inhibit photosynthesis was significantly higher than the corresponding signal from an equivalent untreated grass carpet. The reflectance signal of the two grass carpets was indistinguishable, confirming that the fast dynamic changes in fluorescence emission were related to variations in the functional status of actual photosynthesis induced by herbicide application. Our results from a controlled experiment at the local scale illustrate the potential for the global mapping of terrestrial photosynthesis through space-borne measurements of chlorophyll fluorescence.

Statistics

Citations

35 citations in Web of Science®
39 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

77 downloads since deposited on 09 Oct 2015
42 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Date:2015
Deposited On:09 Oct 2015 15:18
Last Modified:28 Apr 2017 01:08
Publisher:American Geophysical Union
ISSN:0094-8276
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1002/2014GL062943

Download

Download PDF  'Red and far red sun-induced chlorophyll fluorescence as a measure of plant photosynthesis'.
Preview
Content: Published Version
Language: English
Filetype: PDF
Size: 794kB
View at publisher