Reflectance and Chlorophyll Fluorescence Signatures of Leaves

  • Claus Buschmann
  • Hartmut K. Lichtenthaler


The reflection signature of vegetation is the basis for the detection of tree damage by remote sensing. Damaged trees are characterized by (a) an increase of the signal betwenn 500 and 680 nm, (b) a decrease of the signal above 750 nm and (c) a “blue shift” of the inflection point of the rise towards 750 nm. The comparison of reflection and fluorescence spectra demonstrates that fluorescence emission might influence the shape of the reflection spectra. Especially in the region of the rise of the reflection signal towards 750 nm (“red edge”) the detection of fluorescence cannot be excluded in reflection measurements. The measurement of fluorescence signatures parallel to reflection signatures is proposed for remote sensing. A spectrometer (VIRAF-spectrometer), which has recently been developed to detect absorption, fluorescence and reflection spectra as well as fluorescence induction kinetics with one leaf sample, is presented as a help for the interpretation of remote sensing signatures more based on physiological data.

Key Words

Chlorophyll fluorescence forest decline photosynthesis reflection spectra VIRAF-spectrometer 


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Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • Claus Buschmann
    • 1
  • Hartmut K. Lichtenthaler
    • 1
  1. 1.Botanisches Institut II (Plant Physiology and Plant Biochemistry)University of KarlsruheKarlsruheGermany

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