The National Tree Map, produced by Bluesky International, is created from high-resolution aerial photography, accurate terrain and surface data plus colour infrared imagery, combined with innovative processing techniques. For all trees over 3m in height, the database includes measurements of location, height and canopy/crown spread.
This comprehensive product is delivered in three layers:
- Polygons representing tree canopies
- Idealised circular shaped crowns
- Height point
The National Tree Map is updated regularly as new aerial photography becomes available through a cyclic update programme.