Approximately 1000 leaf samples from fresh forest foliage were collected from 5 geographically distinct sites and analyzed at the University of New Hampshire to determine carbon constituents (non-polar, polar, cellulose, and lignin) content using a series of extractions, and nitrogen content using a standard combustion procedure. Results were used as a calibration set for Visible/NIR reflectance and the estimation of carbon and nitrogen concentrations at both the leaf and canopy level. The canopy level study used high spectral resolution data from NASA's AVIRIS to estimate canopy level nitrogen and lignin concentration for the study sites.
The ORNL DAAC ACCP Data archive includes the following:
- Leaf Carbon and Nitrogen
- Leaf Chemistry
- Seedling Canopy Chemistry
- Seedling Canopy Reflectance
- Site AVIRIS Images
- Leaf Reflectance
- See list of data sets and download data
- Browse ACCP Data Holdings by selected attributes
- Retrieve ACCP data by FTP browse
- Search ACCP Metadata (Mercury)