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Proceedings Paper

Change detection in vegetation using 1989 AVIRIS data
Author(s): Christopher D. Elvidge; Frederick P. Portigal
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Paper Abstract

The reflectance of six vegetated areas was tracked from spring through early summer and early fall using three dates of groundreflectance calibrated AVIRIS data sets acquired in 1989. Annual vegetation types exhibit green vegetation spectral features in the spring. The annual plants are largely senesced by early summer and have decreased chlorophyll pigment and leaf water absorption. With the loss of leaf water lignin-cellulose absorptions emerge at 2. 09 and 2. 27 jim. AVIRIS spectra from two forest types show a slight increase in the magnitude ofthe chlorophyll red edge in early summer when compared to the spring data. In the early fall data there is a major decline in the magnitude of the chlorophyll red edge and leafwater absorptions at 0. 95 and 1. 15 jim in tree and shrub dominated areas in drought induced dormancy or undergoing senescence. 1.

Paper Details

Date Published: 1 September 1990
PDF: 12 pages
Proc. SPIE 1298, Imaging Spectroscopy of the Terrestrial Environment, (1 September 1990); doi: 10.1117/12.21349
Show Author Affiliations
Christopher D. Elvidge, Univ. of Nevada/Reno (United States)
Frederick P. Portigal, Univ. of Nevada/Reno (United States)

Published in SPIE Proceedings Vol. 1298:
Imaging Spectroscopy of the Terrestrial Environment
Gregg Vane, Editor(s)

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