Fig. 9.

Red and near IR reflectances from GeoSail model simulations of shrub tundra and spruce woodlands. Labeled points are background reflectances. Black and gray lines are simulations of mixtures of shrubs and lower stature tundra. Green lines are simulations of spruce woodlands with solid shrub layer backgrounds. Orange and red shaded lines are simulations of spruce woodlands with lichen or moss backgrounds. Colors for lines and points in this figure are described in legends for Figs. 7 and 8. Lines of constant NDVI are black lines radiating from the origin with the NDVI values shown by each line.