Measurements of laser-induced chlorophyll fluorescence of living leaves were compared to ecophysiological parameters, both in near and far field conditions. Near field measurements were carried out with a two-wavelength portable fluorometer, both in the laboratory and in the field. Results show significant changes of the 690 nm and 730 nm chlorophyll fluorescence bands in different environmental conditions. Water stress and carboxylation limitations also affect the fluorescence spectra. Far field measurements from a ground-operated fluorescence LIDAR system confirm those results. The F690 / F730 fluorescence ratio is then demonstrated as a good index for vegetation remote sensing.
Remote sensing of chlorophyll fluorescence on vegetation canopies: 2.Physiological significance of fluorescence signal in response to enviromental stresses / VALENTINI R.; CECCHI G.; MAZZINGHI P.; SCARASCIA MUGNOZZA G.; AGATI G.; BAZZANI M.; DE ANGELIS P.; F. FUSI; MATTEUCCI G.; RAIMONDI V.. - In: REMOTE SENSING OF ENVIRONMENT. - ISSN 0034-4257. - STAMPA. - 47:(1994), pp. 29-35. [10.1016/0034-4257(94)90124-4]
Remote sensing of chlorophyll fluorescence on vegetation canopies: 2.Physiological significance of fluorescence signal in response to enviromental stresses
FUSI, FRANCO;
1994
Abstract
Measurements of laser-induced chlorophyll fluorescence of living leaves were compared to ecophysiological parameters, both in near and far field conditions. Near field measurements were carried out with a two-wavelength portable fluorometer, both in the laboratory and in the field. Results show significant changes of the 690 nm and 730 nm chlorophyll fluorescence bands in different environmental conditions. Water stress and carboxylation limitations also affect the fluorescence spectra. Far field measurements from a ground-operated fluorescence LIDAR system confirm those results. The F690 / F730 fluorescence ratio is then demonstrated as a good index for vegetation remote sensing.
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