Vegetation monitoring using the red and
near infrared SPOT VGT channels has been one of the most widely used indices. The
Normalized Difference Vegetation Index (NDVI) correlates closely with green biomass and the
leaf area index. Despite the spatial resolution of 1 km at nadir, there are many scientific
publications documenting the usefulness of SPOT VGT data as a means of monitoring
vegetation conditions on a near real-time basis