Abstract
Remote sensing technique has been used for evaluation of vegetation distribution. NDVI (Normalized Difference Vegetation Index) is one of the most famous indexes, and the usefulness has been shown by a lot of papers. However, the value of NDVI is decided with several factors of vegetation, such as vitality, fraction, and the stage of the vegetation. So NDVI is not an appropriate index to evaluate detailed vegetation factors. In this paper, we discussed the method to evaluate vegetation vitality and fraction together with spectral reflectance data. It was shown that combining NDVI and VIgreen (normalized visible red and green reflectance) is possible to evaluate vegetation vitality and fraction.
