Training Module on Monitoring Vegetation From Space

•  
• 4 - Empirical Vegetation Indices
•  
• 4.1 - NDVI
•  
• 4.2 - EVI
•  
• 4.3 - EVI vs NDVI performance and common drawbacks
•  
• 4.4 - Other vegetation Indices
•  
• 4.5 - Applications

4.3 - EVI vs NDVI performance and common drawbacks

Figure 4.3: NDVI vs EVI performance

A problem common to all VI's is their empirical nature. These two figures show the steep gradient in vegetation cover over South America, including: the hyperarid Atacama desert (no vegetation), the semi-arid and sub-humid portions of the Brazilian Cerrado (savannah biome), and the humid and perhumid portions of the Amazon tropical rainforest.