FLUORESCENCE IMAGING TECHNIQUES FOR MONITORING VEGETATION

Authors: CORP, L - SSAI; MIDDLETON, E - NASA GSFC; McMurtrey Iii, James; ENTCHEVA CAMPBELL, P - NASA NRC FELLOW; Kim, Moon; CHAPPELLE, E - SSAI; BUTCHER, L - SSAI

Submitted to: International Geoscience and Remote Sensing Symposium Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 4/12/2002
Publication Date: 6/24/2002
Citation: Corp, L.A., McMurtrey, J.E., Entcheva Campbell, P.K., Kim, M.S., Chappelle, E.W., Butcher, L.M. 2002. Fluorescence imaging techniques for monitoring vegetation. International Geoscience and Remote Sensing Symposium Proceedings, IGARSS 2002 [CD-ROM]. 1:9-12.

Interpretive Summary: Green vegetation, when excited by specific wavelengths of light, dissipate a portion of the absorbed energy as light emissions in the form of fluorescence. Several research groups are utilizing Laser Induced Fluorescence systems from a variety of platforms to receive fluorescence information related to the physiological status of terrestrial plants. The current research show s great differences between the fluorescence properties of the adaxial and abaxial surfaces of the leaf. This phenomena will be useful in detecting vegetation under certain types of plant stress.

Technical Abstract: Fluorescence sensing systems for the remote assessment of vegetative parameters are currently being developed and tested for use from a variety of sensing platforms. Multi-spectral fluorescence imaging techniques are being applied to assess plant responses to changes in its growth environment. Fluorescence abaxial vs. adaxial spatial patterns of band emissions are discussed with respect to individual leaves excised from a field corn canopy supplied with four levels of nitrogen fertilization. Fluorescence emissions for adaxial leaf surfaces were found significantly lower in intensity and specific emission bands and band ratios were found sensitive to N fertilization level.