Assessing the soil salinity of salt-affected soils is very important with respect to managing the crop, water and soil resource for sustainable crop production. The traditional approaches of soil salinity assessment are time-consuming and expensive and thus the hyperspectral remote sensing seen as a modern, valid and alternative technique.
Mining industry was the initial stimulus for using hyperspectral data as it had been known for many years that the presence of minerals could be detected from the chemical composition of the soil along with associated land cover. Mining has come a long way from the days of panning for gold in the river. Below is an example of using imaging spectroscopy on an area to identify the type and amount of minerals present.