Circumpolar Arctic Landscape theme, used in the
creation of the Circumpolar Arctic Vegetation Map (CAVM). The
landscape map displays regions of plains, hills, mountains, glaciers
and lakes. Generally, plains are flat or gently rolling landscapes
less than 200 m above sea level. Hills are more dissected than
plains (more surface roughness) and are 200-500 m in elevation.
Mountains have greater surface roughness and are above 500 m in elevation.
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/