Fig. 1
From: Current and near-term advances in Earth observation for ecological applications
Spectra of typical green plant and soil materials from the central California Coast Range: red willow (Salix laevigata leaf, red); valley oak (Quercus lobata leaf, green); blue oak (Q. douglasii leaf, blue); dry annual grass leaf, orange; Franciscan formation complex non-serpentine greenstone soil, brown; and Butano sandstone, black. Common leaf biochemicals are shown along the upper edge of the figure indicating regions where absorptions occur. The commonly used names for these regions of the solar spectrum are shown below the wavelength axis. Spectra are from the Environment for Visualization of Images (ENVI) spectral library ver 4.8 and were donated to ENVI and published by Dr. Christopher D. Elvidge 1990. Soil names follow Coleman 2010