Influence of soil salinity on soil bidirectional reflectance in optical domain

The objective of the presented research was to study influence of soil salinity on soil bidirectional reflectance in the optical domain. Soils in two zones were selected for the examination: Ex-Lago Texoco located north east from Mexico City, Mexico State and area of Lake Cuitzeo north of Morelia, Michoacan State. Bidirectional reflectance was measured by the GER radiometer. Results were presented by normalized reflectance as a function of view zenithal angle depending on the solar azimuth angle. Soils carrying salt on their surface have a different bidirectional characteristic in comparison with soils not containing salt or soils that are subject to tillage practice. Bidirectional reflectance of this soil is similar to specular reflection. In this paper, it is shown that the forwardscatter regime is demonstrated in the bidirectional reflectance of a soil surface composed of salt.