R. Riou et F. Seyler, THE EFFECT OF SOIL ON RAIN-FOREST CANOPY NIR REFLECTANCE ON SPOT OBLIQUE IMAGERY, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 320(11), 1995, pp. 1079-1086
Five SPOT scenes located within the South Cameroon forested plateaus b
etween 2 degrees and 5 degrees N latitude, have been used to depict lu
minance variations related to forest type and canopy density. For the
given acquisition geometry (high oblique angle), recording date (end o
f the rainy season) and surface spatial characteristics, it can be ass
essed that NIR luminance variations of the canopy record moisture Vari
ations of the soil surface. Therefore, soil contributes to the bidirec
tional reflectance of a rain forest canopy on SPOT images.