Introduction
The gradient nearest neighbor (GNN) data are multivariate, imputed
maps of forest attributes based on 30-m Landsat imagery, Forest Inventory
and Analysis data, and other geospatial data products, such as climate
and topography. These maps provide a valuable source of data for
landscape analysis. This website is the primary method for disseminating
these data, accuracy assessment reports, and other information needed
for interpretation and application of GNN maps.
GNN maps are the product of the Landscape Ecology Modeling, Mapping &
Analysis (LEMMA) group, an inter-institutional research team led by USFS
Pacific Northwest Research Station and Oregon State University. Additional
support and collaboration has been provided by USFS Rocky Mountain Research
Station, USFS Pacific Northwest Region, and the USFS Forest Inventory and
Analysis Program.
For additional information regarding GNN, please visit the
LEMMA homepage.