The Reflectance Properties (1.2-2.5μm) of Soil's Structural Crust in Selected Soils from Israel

摘要

Structural crust is a thin layer formed on the soil surface after rail storm events. The crust is the result of a physical segregation and rearrangement of soil particles in a form that affects infiltration, runoff and soil erosion. In this study, a controlled spectral investigation of the structural crust across the NIR-SWIR spectral region was conducted on three selected Israeli soils. Using a laboratory rainfall simulator and a sensitive spectrometer, it was found that significant spectral differences occur between each crust and its bulk soil. The spectral information was found to be related to changes in the soil particle size distribution and soil texture at the soil surface. This conclusion was made based on the spectral features of OH in clay lattice, OH in adsorbed water and CO_3 in carbonates.