SAVI: Soil-Adjusted Vegetation Index

In VegSpecIndex: Vegetation and Spectral Indices for Environmental Assessment

Soil-Adjusted Vegetation Index

Description

The SAVI is presented to mitigate the impact of soil brightness and to minimize the effects of the soil background on vegetation. Its creator “Huete” added a soil adjustment factor L to the equation of NDVI in order to correct for soil noise effects (soil colour, soil moisture, soil variability across regions, etc.), which tend to impact the results. L varies from –1 to +1, depending on the amount of green vegetation present in the area. In areas with high green vegetation L= 0, and in this case, SAVI is the same as NDVI. Conversely, L = 1 for low green vegetation zones. Most usually, L is set to 0.5 to adjust to most land cover (EOS, 2022).

Usage

SAVI (NIR, RED, L)

Arguments

NIR	Near infra-red spectral band
RED	Red spectral band
L	Soil adjustment factor

Value

Soil-Adjusted Vegetation Index

References

EOS. (2022). Vegetation Indices to drive digital Agri solutions. EOS Data Analytics. <https://eos.com/blog/vegetation-indices/>

Examples

SAVI (0.14628, 0.061663, 0.5)

VegSpecIndex documentation built on April 4, 2025, 4:28 a.m.