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The red edge of plant leaf reflectanceA detailed study of the red edge spectral feature of green vegetation based on laboratory reflectance spectrophotometry is presented. A parameter lambda is defined as the wavelength is defined as the wavelength of maximum slope and found to be dependent on chlorophyll concentration. Species, development stage, leaf layering, and leaf water content of vegetation also influences lambda. The maximum slope parameter is found to be independent of simulated ground area coverage. The results are interpreted in terms of Beer's Law and Kubelka-Munk theory. The chlorophyll concentration dependence of lambda seems to be explained in terms of a pure absorption effect, and it is suggested that the existence of two lambda components arises from leaf scattering properties. The results indicate that red edge measurements will be valuable for assessment of vegetative chlorophyll status and leaf area index independently of ground cover variations, and will be particularly suitable for early stress detection.
Document ID
19830054064
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Horler, D. N. H.
(Imperial Coll. of Science and Technology London, United Kingdom)
Dockray, M.
(Imperial Coll. of Science and Technology London, United Kingdom)
Barber, J.
(Imperial College of Science and Technology London, United Kingdom)
Date Acquired
August 11, 2013
Publication Date
June 1, 1983
Publication Information
Publication: International Journal of Remote Sensing
Volume: 4
ISSN: 0143-1161
Subject Category
Earth Resources And Remote Sensing
Accession Number
83A35282
Funding Number(s)
CONTRACT_GRANT: NAS5-25738
Distribution Limits
Public
Copyright
Other

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