Spectral characterization of forest damage occurring on Whiteface Mountain, NY: studies with the Fluorescence Line Imager and ground-based spectrometers

Barrett N. Rock; John R. Miller; David M. Moss; James R. Freemantle; Michael G. Boyer

doi:10.1117/12.21350

1 September 1990 Spectral characterization of forest damage occurring on Whiteface Mountain, NY: studies with the Fluorescence Line Imager and ground-based spectrometers

Barrett N. Rock, John R. Miller, David M. Moss, James R. Freemantle, Michael G. Boyer

Author Affiliations +

Proceedings Volume 1298, Imaging Spectroscopy of the Terrestrial Environment; (1990) https://doi.org/10.1117/12.21350
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

Several types of damage occur in the coniferous forests on Whiteface Mountain NY including foliar loss and mortality in balsam fir (Abies balsamea) due to synchronized aging and wind- generated dessication and a similar foliar loss and mortality or forest decline damage in red spruce (Picea rubens) thought to be related to air pollution. The damage in fir forms characteristic patterns of alternating living and dead " waves" of trees on the upper-elevation northwest-facing slopes while forest decline damage in spruce forms isolated patches of dead and dying trees on upper-elevation slopes. Previous studies have identified spectral reflectance characteristics associated with forest decline damage in red spruce including chiorosis and a subtle blue shift of the chlorophyll red edge. The present study provides ground- based spectral characteristics of fir wave damage and an analysis of calibrated Fluorescence Line Imager (FLI) data acquired along the same fir wave used for the in situ measurements. In addition both in situ and FLI reflectance measurements are compared for white birch (Betula papyrifera) and balsam fir. Derivative curve data were produced from both in situ and FLI reflectance measurements for the red edge spectral region for birch and for various portions of a fir wave. These results suggest that with proper atmospheric correction of airborne imaging spectrometer datasets the derivative curve approach will provide an accurate means of assessing red edge parameters and that such will allow for identification of specific types of forest damage made on the basis of spectral fine features. 1.

Citation Download Citation

Barrett N. Rock, John R. Miller, David M. Moss, James R. Freemantle, and Michael G. Boyer "Spectral characterization of forest damage occurring on Whiteface Mountain, NY: studies with the Fluorescence Line Imager and ground-based spectrometers", Proc. SPIE 1298, Imaging Spectroscopy of the Terrestrial Environment, (1 September 1990); https://doi.org/10.1117/12.21350

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