Chlorophyll fluorescence emission spectrum inside a leaf.
Chlorophyll a fluorescence can be used as an early stress indicator. Fluorescence is also connected to photosynthesis so it can be proposed for global monitoring of vegetation status from a satellite platform. Nevertheless, the correct interpretation of fluorescence requires accurate physical models. The spectral shape of the leaf fluorescence free of any re-absorption effect plays a key role in the models and is difficult to measure. We present a vegetation fluorescence emission spectrum free of re-absorption based on a combination of measurements and modelling. The suggested spectrum takes into account the photosystem I and II spectra and their relative contribution to fluorescence. This emission spectrum is applicable to describe vegetation fluorescence in biospectroscopy and remote sensing.
Pedrós
Roberto
R
Solar Radiation Group, Department of Earth Physics and Thermodynamics, University of Valencia, Spain.
Moya
Ismael
I
Goulas
Yves
Y
Jacquemoud
Stéphane
S
D002734:Chlorophyll / Q000737:chemistry*; D045331:Photosystem I Protein Complex / Q000737:chemistry / Q000378:metabolism; D045332:Photosystem II Protein Complex / Q000737:chemistry / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry / Q000201:enzymology; D013050:Spectrometry, Fluorescence / Q000379:methods*
D045331:Photosystem I Protein Complex; D045332:Photosystem II Protein Complex; D002734:Chlorophyll