Abstract
ABSTRACT Turpie, K.R., 2013. Explaining the spectral red-edge features of inundated marsh vegetation. In a previously published experiment, canopy reflectance spectrum was measured for three monospecific canopies as water level was artificially increased. As the water rose, spectral features appeared that could not be explained by the experimenters. To better understand their published results, a combination of a shallow-water reflectance model and a canopy reflectance model was used to simulate the spectral effects observed with increasing levels of inundation. Information from the Lee shallow water, in particular, helped explain the key spectral features observed during high water levels. However, the simulation results also suggested interesting implications regarding the nonlinear mixing of water and vegetation reflection spectra as found in marsh or other flooded canopies. As water level increases, the influence of leaf reflectance below the water's surface changes the characteristics of the backgrou...
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