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Vegetation indices ( vi) are robust, empirical measures of vegetation activity at the land surface. | find, read and cite all the research. spectral vegetation indices are among the most widely used satellite data products, which provide key measurements for climate, hydrologic, and biogeochemical studies; phenology, land cover, and land cover change detec- tion; natural resource management and sustainable development. pdf | in the field of remote pdf sensing applications, scientists have developed vegetation indices ( vi) for qualitatively and quantitatively evaluating.
they are designed to enhance the vegetation signal from measured spectral responses by combining two ( or more). there are three types of vegetation index available: simple, intrinsic indices indices which use a soil line atmospherically corrected indices points to note: vegetation indices in this chapter, a review of the most significant vegetation indices is carried out, paying special attention to those developed to normalize the background effect by combining the reflectance. the global distribution of vegetation types as well as their biophysical and structural properties and spatial/ temporal variations. optical vegetation indices ( vegetation indices pdf vis) derived from space- borne earth observations are widely used for monitoring terrestrial ecosystems and tracking plant biophysical, biochemical and physiological.
