The use of low-altitude digital photography and the green spectral wavelength to detect stress in trees

This study was conducted to determine if tree stress could be detected by measuring the magnitude of green wavelength light reflected off the tree's canopy and captured by digital images. The overall goal of this study was to develop a tool that land managers could use to assess the health of their urban forest, that is a more scientifically sound method than opinion. It was part of a larger study monitoring the effects of construction damage on 30 bur oaks (Quercus macrocarpa) growing in Minnehaha Falls Park in Minneapolis, Minnesota.

[Ti: The use of low-altitude digital photography and the green spectral wavelength to detect stress in trees]
[Au: Hargrove, J.R., , ,]
[So: Plan B Paper, University of Minnesota.]
[Ky: Managing the Urban Forest]]