Integrated Landscape Units (ILUM) used to create the Circumpolar Arctic Vegetation Map (CAVM). The ILUM is the union of all individual data themes used to create the CAVM. The Circumpolar Arctic Vegetation Map shows the types of vegetation that occur across the Arctic, between the ice-covered Arctic Ocean to the north and the northern limit of forests to the south. The CAVM team grouped over 400 described plant communities into 16 different physiognomic units based on plant growth forms. An international team of arctic vegetation scientists representing the six countries of the Arctic (Canada, Greenland, Iceland, Norway, Russia, and the United States) prepared the map. Detailed descriptions of the methods used to create the map can be found at: http://www.geobotany.uaf.edu/cavm/
Vegetation classification for the Circumpolar Arctic Vegetation Mapping project
ground condition
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Alaska Geobotany Center
Institute of Arctic Biology
University of Alaska Fairbanks
http://www.geobotany.org/
The map was reviewed by the CAVM mapping team.
Coverage topology was checked using the NODEERRORS and LABELERRORS commands.
Polygon boundaries were overlaid on the false-color infrared basemap and visually inspected.
False-color infrared basemap, NDVI
coastline and glacier masks
Digital elevation model
Calculated NDVI for 1993 and 1995 AVHRR summer scenes as: NDVI = (Band2 - Band1)/(Band2 + Band1) Obtained Maximum NDVI for each pixel in analysis area
Metadata imported.
Feature geometry.
ESRI
Physiogonomic unit code
Alaska Geobotany Center
Cryptogam, herb barren
Alaska Geobotany Center
Rush/grass, forb, cryptogam tundra
Alaska Geobotany Center
Cryptogam barren complex (bedrock)
Alaska Geobotany Center
Prostrate dwarf-shrub, herb tundra
Alaska Geobotany Center
Graminoid, prostrate dwarf-shrub, forb tundra
Alaska Geobotany Center
Prostrate/Hemiprostrate dwarf-shrub tundra
Alaska Geobotany Center
Nontussock sedge, dwarf-shrub, moss tundra
Alaska Geobotany Center
Tussock-sedge, dwarf-shrub, moss tundra
Alaska Geobotany Center
Erect dwarf-shrub tundra
Alaska Geobotany Center
Low-shrub tundra
Alaska Geobotany Center
Sedge/grass, moss wetland
Alaska Geobotany Center
Sedge, moss, dwarf-shrub wetland
Alaska Geobotany Center
Sedge, moss, low-shrub wetland
Alaska Geobotany Center
Noncarbonate mountain complex
Alaska Geobotany Center
Carbonate mountain complex
Alaska Geobotany Center
Nunatak complex
Alaska Geobotany Center
Glaciers
Alaska Geobotany Center
Water
Alaska Geobotany Center
Lagoon
Alaska Geobotany Center
Non-Arctic areas
Alaska Geobotany Center
Internal feature number.
ESRI
Length of feature in internal units.
ESRI
Area of feature in internal units squared.
ESRI
Alaska Geobotany Center
Institute of Arctic Biology
University of Alaska Fairbanks
http://www.geobotany.org/
Unknown
Alaska Geobotany Center
Institute of Arctic Biology
University of Alaska Fairbanks
http://www.geobotany.org/