3.2.4 - The middle-infrared region (MIR)

The middle-infrared region (1.301 μm - 2.5 μm) contains information about the absorption of radiation by water, cellulose and lignin and several other biochemical constituents. ( For further information see for ex. Curran,1989).

Figure 3.8 – Reflectance spectrum for green grass, for MIR wavelengths

This region of the vegetation spectrum allows the identification of vegetation stress due to drought.

Exercise: From the following three different reflectance spectra, decide which correspond to green healthy vegetation: