Asymptotic nature of grass canopy spectral reflectance.

摘要: The asymptotic nature of grass canopy spectral reflectance has been evaluated from field experimental data collected over the wavelength region 0.500–1.000 μm at 0.005-μm intervals. green vegetation against a soil background decreases in regions absorption and increases minimal or no as vegetational density until stable unchanging reflectance, called is reached. Results indicated asymptotes occurred significantly lower levels total wet biomass, dry chlorophyll content, leaf water content strong pigment (low detectability threshold) than photographic ir where was minimum (high threshold). These findings suggested that sensors were more suited to remote sensing moderate high biomass operating spectrum occurred.