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1 September 1990 Fluorescence line imager measured "red edge shifts" in a metal-stressed Norway spruce forest and their relationship to canopy biochemical and morphological changes
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Abstract
Spatial and spectral mode FLI airborne imaging spectrometer data obtained from a metal-stressed Norway spruce forest exhibiting subtle stress symptoms correlate poorly with changes in canopy chlorophyll content and biomass with respect to changes or " shifts" in the wavelength positions of the red chlorophyll absorptance well and the transition region between the red reflectance minimum and near-infrared reflectance maximum (the so-called " red edge" ) with " shift" directions being highly variable and displaying no clear trends relative to canopy stress conditions. The lack of strong relationships between canopy parameters that provide a measure of its health and vitality and canopy spectral features that are purported to give a reliable measure of changes in these features does not bode well for the use of the " red edge shift" as a consistent and unambiguous indicator of stress in coniferous forests especially for low or incipient levels of stress. 1.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cliff Banninger "Fluorescence line imager measured "red edge shifts" in a metal-stressed Norway spruce forest and their relationship to canopy biochemical and morphological changes", Proc. SPIE 1298, Imaging Spectroscopy of the Terrestrial Environment, (1 September 1990); https://doi.org/10.1117/12.21357
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