Sun-induced fluorescence - a new probe of photosynthesis First maps from the imaging spectrometer HyPlant

Sun-induced fluorescence - a new probe of photosynthesis : First maps from the imaging spectrometer HyPlant

© 2015 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 21(2015), 12 vom: 04. Dez., Seite 4673-84
1. Verfasser: Rascher, U (VerfasserIn)
Weitere Verfasser: Alonso, L, Burkart, A, Cilia, C, Cogliati, S, Colombo, R, Damm, A, Drusch, M, Guanter, L, Hanus, J, Hyvärinen, T, Julitta, T, Jussila, J, Kataja, K, Kokkalis, P, Kraft, S, Kraska, T, Matveeva, M, Moreno, J, Muller, O, Panigada, C, Pikl, M, Pinto, F, Prey, L, Pude, R, Rossini, M, Schickling, A, Schurr, U, Schüttemeyer, D, Verrelst, J, Zemek, F
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't FLEX HyPlant airborne measurements chlorophyll fluorescence imaging spectroscopy photosynthesis remote sensing sun-induced fluorescence mehr... vegetation monitoring Chlorophyll 1406-65-1
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100 1 |a Rascher, U  |e verfasserin  |4 aut 
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520 |a Variations in photosynthesis still cause substantial uncertainties in predicting photosynthetic CO2 uptake rates and monitoring plant stress. Changes in actual photosynthesis that are not related to greenness of vegetation are difficult to measure by reflectance based optical remote sensing techniques. Several activities are underway to evaluate the sun-induced fluorescence signal on the ground and on a coarse spatial scale using space-borne imaging spectrometers. Intermediate-scale observations using airborne-based imaging spectroscopy, which are critical to bridge the existing gap between small-scale field studies and global observations, are still insufficient. Here we present the first validated maps of sun-induced fluorescence in that critical, intermediate spatial resolution, employing the novel airborne imaging spectrometer HyPlant. HyPlant has an unprecedented spectral resolution, which allows for the first time quantifying sun-induced fluorescence fluxes in physical units according to the Fraunhofer Line Depth Principle that exploits solar and atmospheric absorption bands. Maps of sun-induced fluorescence show a large spatial variability between different vegetation types, which complement classical remote sensing approaches. Different crop types largely differ in emitting fluorescence that additionally changes within the seasonal cycle and thus may be related to the seasonal activation and deactivation of the photosynthetic machinery. We argue that sun-induced fluorescence emission is related to two processes: (i) the total absorbed radiation by photosynthetically active chlorophyll; and (ii) the functional status of actual photosynthesis and vegetation stress 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a FLEX 
650 4 |a HyPlant 
650 4 |a airborne measurements 
650 4 |a chlorophyll fluorescence 
650 4 |a imaging spectroscopy 
650 4 |a photosynthesis 
650 4 |a remote sensing 
650 4 |a sun-induced fluorescence 
650 4 |a vegetation monitoring 
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700 1 |a Alonso, L  |e verfasserin  |4 aut 
700 1 |a Burkart, A  |e verfasserin  |4 aut 
700 1 |a Cilia, C  |e verfasserin  |4 aut 
700 1 |a Cogliati, S  |e verfasserin  |4 aut 
700 1 |a Colombo, R  |e verfasserin  |4 aut 
700 1 |a Damm, A  |e verfasserin  |4 aut 
700 1 |a Drusch, M  |e verfasserin  |4 aut 
700 1 |a Guanter, L  |e verfasserin  |4 aut 
700 1 |a Hanus, J  |e verfasserin  |4 aut 
700 1 |a Hyvärinen, T  |e verfasserin  |4 aut 
700 1 |a Julitta, T  |e verfasserin  |4 aut 
700 1 |a Jussila, J  |e verfasserin  |4 aut 
700 1 |a Kataja, K  |e verfasserin  |4 aut 
700 1 |a Kokkalis, P  |e verfasserin  |4 aut 
700 1 |a Kraft, S  |e verfasserin  |4 aut 
700 1 |a Kraska, T  |e verfasserin  |4 aut 
700 1 |a Matveeva, M  |e verfasserin  |4 aut 
700 1 |a Moreno, J  |e verfasserin  |4 aut 
700 1 |a Muller, O  |e verfasserin  |4 aut 
700 1 |a Panigada, C  |e verfasserin  |4 aut 
700 1 |a Pikl, M  |e verfasserin  |4 aut 
700 1 |a Pinto, F  |e verfasserin  |4 aut 
700 1 |a Prey, L  |e verfasserin  |4 aut 
700 1 |a Pude, R  |e verfasserin  |4 aut 
700 1 |a Rossini, M  |e verfasserin  |4 aut 
700 1 |a Schickling, A  |e verfasserin  |4 aut 
700 1 |a Schurr, U  |e verfasserin  |4 aut 
700 1 |a Schüttemeyer, D  |e verfasserin  |4 aut 
700 1 |a Verrelst, J  |e verfasserin  |4 aut 
700 1 |a Zemek, F  |e verfasserin  |4 aut 
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