15 Calculate the Normalized Difference Vegetation Index (NDVI)
The Normalized Difference Vegetation Index (NDVI) is a numerical indicator that provides an estimate of plant biomass and is used to identify areas of photosynthetically active vegetation. It’s crucial for monitoring plant health, crop yield, and environmental changes.
- Enter the Near-Infrared (NIR) and Red values obtained from your remote sensing data.
- Click ‘Calculate NDVI’.
- View the results and chart below.
NDVI is calculated using the following formula:
NDVI = (NIR – Red) / (NIR + Red)
Case Studies
Comparison of NDVI Values
| Location | NDVI Value |
|---|
Expert Tips
- Consider atmospheric conditions when interpreting NDVI values.
- Use NDVI in combination with other indices for better analysis.
Frequently Asked Questions
What is the range of NDVI values?
NDVI values range from -1 to 1.