Identify the five primary absorption bands of green vegetation and describe the cause of absorption. State the relationship between moisture content and leaf reflectance in the middle infrared wavelengths. Write a relationship that creates a greenness index based on the reflectance characteristics of vegetation. Sun's energy concentrated in visible region, 0.4 to 0.7 m, tapering off to a minimum by 3.0 m. Incident energy is either absorbed, reflected or transmitted. Reflected energy is available to make photographs.
Plants appear in various shades of green.
Color photo Spectral curves of pigmented leaf parts. Other influences on the color infrared picture. Example from Palouse landscape Summary curve of vegetative reflectance Curves for eastern broadleaf forest and photo illustrating differences in species. Curves for crop plants and illustration of differences. Summary vegetative reflectance curve to emphasize water absorption region.