NDVI

The Normalized Difference Vegetation Index NDVI, which is derived from infrared and red Earth surface reflectance, scales with green biomass.

Jesting with Adjusters « Climate Audit 2007

It also provides NDVI values at a finer resolution than is possible with satellite NDVI, which is useful for monitoring vegetation in test plots or sites.

Digital50.com Digital 50 Daily Industry News RSS Feed 2009

Though NDVI isn't involved in this story -- as far as I can remember -- but William Saturno, an archaeologist specializing in Mayan civilization, once noticed in satellite images telltale differences in coloration of vegetation growing where he knew there were buried temples.

Agro-veillance 2008

Several years ago, I was involved in a project to create a map of bird habitat using NDVI measurement of city land cover.

Agro-veillance 2008

The data collected was then used to create a Normalised Difference Vegetation Index (NDVI) map, which “tells you the difference between 'green crops' that are photosynthesising and bare ground.”

Agro-veillance 2008

Equipped with this NDVI map, some GPS locators and a techno-pimped out John Deere, farmers would thus be able to target areas in need of supplemental nutrients and to better estimate how much to use, potentially releasing less fertilizers that otherwise would leach out and pollute water sources nearby and further down the hydrological line.

Agro-veillance 2008

Changes in greenness of northern vegetation (depicted by NDVI) between 1981 and 1991 as measured by satellite instruments [3].

Effects of changes in climate and UV radiation levels on structure of arctic ecosystems in the short and long term 2009

These observations are now used to quantify the activities of the biosphere, primarily in terms of vegetation cover and function, using spectral indices such as NDVI.

Biosphere 2009

Comparisons of the greenness index (NDVI) from satellite images show that May to September values for the Northern Hemisphere between 55° and 75° N increased by around 5 to 50% from 1982 to 1990 [66] (Fig. 7.25), with greater increases in North America than in Eurasia.

Effects of climate change on landscape and regional processes and feedbacks to the climate system in the Arctic 2009

Satellite measurements suggest a widespread increase in indices of vegetation greenness (e.g., the normalized difference vegetation index – NDVI) and biomass at high latitudes [68] (Fig. 7.25), although changes in satellites and sensor degradation may have contributed to this trend [69].

Effects of changes in climate and UV radiation levels on structure of arctic ecosystems in the short and long term 2009