Sub-pixel spectral unmixing and radiative transfer modeling of forest canopy biophysical variables, quantifying Equivalent Water Thickness (EWT), chlorophyll red-edge inflection shifts, and selective timber harvesting disturbance.
Key findings
- 1.20 µm and 1.65 µm liquid water absorption depth tracks physiological drought stress 14–21 days prior to visible foliar discoloration.
- Red-edge inflection point (REIP) calculation detects early-stage pathogen infestation and sub-lethal crown decline.
- Sub-pixel unmixing isolates fractional non-photosynthetic vegetation (NPV) identifying skid trails and selective harvest roads under dense canopy.
Read the paper
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