Indicator: Vegetation Condition

Status	Available on Project Basis
Description	Measures photosynthetic activity and vigor of vegetation using the Normalized Difference Vegetation Index (NDVI). Values range from -1 to 1, with values >0.3 indicating vegetation, values >0.6 indicating dense healthy vegetation. Temporal trends can indicate degradation or loss of productivity.
Unit	Index (-1 to 1)
Temporal Resolution	Every 3-5 days
Spatial Resolution	10 meters
Data	Sentinel-2 L2A data (atmospherically corrected), using bands B4 (red wavelength) and B8 (near infrared wavelength)
Method	Calculates NDVI using Sentinel-2 data with cloud masking. Values are linearly interpolated to daily time-series, aggregated by median, and smoothed using a Savitzky-Golay filter. Standard deviation is calculated to characterize distribution. A negative 10m buffer is applied to large polygons to reduce adjacency effects