One of the major indirect effects of artificial watering points in a grazed landscape is the development around them of a zone of extreme degradation called a piosphere.

The low spectral resolution of multispectral satellite imagery limits its capability for extracting information in arid environments with sparse vegetation cover. The higher spectral resolution of hyperspectral imagery may improve discrimination of different vegetation types, even with low cover. The aim of this study was to evaluate the potential of Earth Observing 1 (EO-1) Hyperion hyperspectral data to discriminate arid landscape components in the southern rangelands of South Australia.

Desertification is one of the main environmental and also social and economic problems facing Iran. Seventeen out of 31 Iranian provinces, which are home to approximately 70% of the total population, are affected by Desertification. This study aimed to use GIS and fuzzy logic for mapping environmentally sensitive areas (ESAs) to desertification based on MEDALUS approach in Isfahan province, central Iran.

Vegetation indices are widely used for assessing and monitoring ecological variables such as vegetation

cover, above-ground biomass and leaf area index. This study reviewed and evaluated different groups of vegetation