nlcd land classification legend cover use usgs landcover urban 2011 national anderson colour database level data categories qgis class type
evergreen nasa land cover types color map coded forest classification needleleaf evergreens climate shows through earth water tundra terrain deforestation
land cover classification fao use sensing remote geospatial capacity innovative supporting cbds building multi temporal
classification land cover concepts lccs manual user system
cover land classification form fao herbaceous dominant forbs life system criteria