Vegetation can become stressed or less healthy because of a change in a range of environmental factors. These factors include lack of water, concentration of toxic elements/herbicides and infestation by insects/viruses. The influence of chlorophyll in the leaf pigments controls the response of vegetation to radiation in the visible wavelength. As a plant becomes diseased, the cell structure of a plant alters and the spectral signature of a plant or plant community will change.
The parameters offered by Star2Earth for vegetation health monitoring derived from EO-data are the following:
- NDVI (Normalized Difference Vegetation Index)
- SAVI (Soil-adjusted Vegetation Index)
- MSI (Moisture Stress Index)
- NDWI (Normalized Difference Water Index)