page_title: Vegetation Index
section_title: Multispectral Vegetation Indices
hierarchical_section_title: Vegetation Index / List of Vegetation Indices / Multispectral Vegetation Indices
caption_attribution_description: English: NDVI applied to the urban area of Ponta Grossa, southern Brazil during a drought at the end of winter 2017
context_page_description: A Vegetation Index (VI) is a spectral transformation of two or more bands designed to enhance the contribution of vegetation properties and allow reliable spatial and temporal inter-comparisons of terrestrial photosynthetic activity and canopy structural variations.
  There are many Vegetation Indices, with many being functionally equivalent. Many of the indices make use of the inverse relationship between red and near-infrared reflectance associated with healthy green vegetation. Since the 1960s scientists have used satellite remote sensing to monitor fluctuation in vegetation at the Earth's surface. Measurements of vegetation attributes include leaf area index, percent green cover, chlorophyll content, green biomass and absorbed photosynthetically active radiation.
  Vegetation Indices have been historically classified based on a range of attributes, including the number of spectral bands; the method of calculations, depending on the required objective; or by their historical development. For the sake of comparison of the effectiveness of different VIs, Lyon, Yuan et al. classified 7 VIs based on their computation methods.
context_section_description: Simple Ratio
  Normalised Difference Vegetation Index (NDVI)
  Kauth-Thomas Tasseled Cap Transformation
  Infrared Index
  Perpendicular Vegetation Index
  Greenness Above Bare Soil
  Moisture Stress Index
  Leaf Water Content Index (LWCI) 
  MidIR Index
  Soil-Adjusted Vegetation Index (SAVI)
  Modified SAVI
  Atmospherically Resistant Vegetation Index
  Soil and Atmospherically Resistant Vegetation Index
  Enhanced Vegetation Index (EVI)
  New Vegetation Index
  Aerosol Free Vegetation Index
  Triangular Vegetation Index
  Reduced Simple Ratio
  Visible Atmospherically Resistant Index
  Normalised Difference Built-Up Index
  Weighted Difference Vegetation Index (WDVI)
  Fraction of absorbed photosynthetically active radiation (FAPAR)
caption: NDVI through Landsat 8 applied to the urban area of Ponta Grossa, southern Brazil
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