Normalised Difference Vegetation Index or NDVI is an indicator used to establish the health of plant life. It also allows to define and visualize vegetated areas on the map as well as detect abnormal changes in the growth process.
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)
Figure 1.0 Displays the NDVI for the periods between year 2017 and 2020 on a day to day basis.
Figure 1.0 – click image to enlarge
Figure 1.1 Showing Green coverage percentage for year 2019 and 2020.
Displaying vegetation variations between year 2014 to 2020. Click image to see differences.
Satellite NDVI Mapping of Aruba utilising different Bands to illustrate green coverage densities throughout the island. Click image to view higher quality imagery.
Note: The more profound areas (darker) depicts a healthier vegetation as compared to lighter areas where less chlorophyl is produced during that period. As seen in the center image.
Showing Green coverage animation with a threshold of 0.2 between the dates of January 2020 and May 2020.
Showing Green Coverage for year 2019
Animation exhibiting green coverage for year 2018.