Change detection in vegetation using 1989 AVIRIS data

Christopher D. Elvidge; Frederick P. Portigal

doi:10.1117/12.21349

1 September 1990 Change detection in vegetation using 1989 AVIRIS data

Christopher D. Elvidge, Frederick P. Portigal

Proceedings Volume 1298, Imaging Spectroscopy of the Terrestrial Environment; (1990) https://doi.org/10.1117/12.21349
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

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.

Citation Download Citation

Christopher D. Elvidge and Frederick P. Portigal "Change detection in vegetation using 1989 AVIRIS data", Proc. SPIE 1298, Imaging Spectroscopy of the Terrestrial Environment, (1 September 1990); https://doi.org/10.1117/12.21349

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