MODIS vegetation indices enable reliable spatial and temporal comparisons of vegetation canopy greenness, a combined attribute of leaf area, chlorophyll, and canopy structure, at 16day intervals and multiple spatial resolutions. From atmospherically corrected reflectance in the red, nearinfrared, and blue wavebands, two vegetation indexes are generated.

What NDVI Values mean:
Very low values of NDVI (0.1 and below) correspond to barren areas of rock, sand, or snow.
Moderate values represent shrub and grassland (0.2 to 0.3), while high values indicate temperate and tropical rainforests (0.6 to 0.8).

High NDVI values indicate healthier vegetation and low NDVI values signify low or no vegetation. A province in #China is used as an example to demonstrate the usage of MODIS NDVI.

GeoViz Plus #GeoVizPlus covers some, but not limited to GIS Tutorial, Remote Sensing practical lessons, GIS Beginner, GIS Intermediate, Image Analysis, LULC, Map Tricks
#GIS #Geospatial #RemoteSensing #Photogrammetry #ArcGIS #ErdasImagine #QGIS
#nasa

   / @geovizplus  

Background Music arranged by Royalty Music