Abstract
A pronounced decrease of the surface albedo (reflectivity) has been observed in an area in the Northern Sinai, fenced‐in in the summer of 1974. Analysis of the LANDSAT Multispectral Scanner System digital data from an April 1977 pass indicates a reduction in the albedo in the exclosure by Δa = 0.06, or 13%, as compared to the outside, which continues to be subjected to overgrazing and anthropogenic pressures. The reduction of reflectivity is approximately the same in all the spectral bands, and is therefore attributable to accumulation of dead plants and plant debris, and not directly to live vegetation.
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