1. Accueil
  2. Organisations
  3. US Geological Survey
  4. Southcentral Alaska...

Southcentral Alaska National Land Cover Database 2001 (NLCD 2001)

National Land Cover Database 2001 (NLCD2001) is a 16-class (additional four classes in Alaska only) land cover classification scheme that has been applied consistently across all 50 United States and Puerto Rico at a spatial resolution of 30 meters. NLCD2001 is based primarily on the unsupervised classification of Landsat Enhanced Thematic Mapper+ (ETM+) circa 2001 satellite data. NLCD2001 improves on NLCD92 in that it is comprised of three different elements: land cover, percent developed impervious surface and percent tree canopy density. NLCD2001 also uses improved classification algorithms, which have resulted in data with more precise rending of spatial boundaries between the land cover classes.

The Southcentral Alaska National Land Cover Database 2001 (NLCD 2001) dataset has been clipped to Southcentral Alaska.

Données et ressources

Info additionnelle

Champ Valeur
Dernière modification 17 Décembre 2019, 10 h 21 (AKST)
Créé le 17 Décembre 2019, 10 h 21 (AKST)
Statut Complete
Data Types GIS
ISO Topics biota
Geo-keywords Kenai Peninsula, Southcentral