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Circumpolar Landscape Map (Physiography)

Elevation strongly influences soil moisture and patterns of tundra plant communities. Areas less than 100 m above sea level were separated to show low-elevation plains. Areas above 100 m elevation were divided into 333-m intervals to show decreases of about 2 °C, as predicted by the adiabatic lapse rate of 6 °C per 1000 m. This corresponds to the change in mean July temperature between Bioclimate Subzones.

Vegetation in mountainous regions changes with elevation, forming distinct elevational belts which correspond approximately to bioclimatic subzones. Vegetation is also modified by local topographic effects such as slope, aspect, and cold-air drainage. This heterogeneity was too detailed to map at this scale, so vegetation in mountainous areas was mapped as a complex, using a diagonal hachure pattern. The background color and the orientation of the hatching represent the pH of the dominant bedrock (magenta for non-carbonate bedrock including sandstone and granite, purple for carbonate bedrock including limestone and dolomite). The color of the hatching represents the bioclimate subzone at the lowest elevation within the polygon (yellow for Subzone D, red for Subzone E).

Back to Circumpolar Arctic Vegetation Map

Data and Resources

  • Download
    Download :: Map Image

    aga_circumpolar_landscape_2003.jpg (2.08 MB)

  • Download
    Download :: GIS Data

    aga_circumpolar_landscape_age_2009.zip (5.12 MB)

  • View website
    Website :: Toolik Arctic Geobotanical Atlas

    http://www.arcticatlas.org/maps/themes/cp/cpphys

Status: Complete
Type: Data
Data Types: Image, GIS, Map
Primary Contact
Raynolds, Martha
ISO Topics
biota, imageryBaseMapsEarthCover, environment, geoscientificInformation

Geo-keywords
Arctic

Collection
All Maps, Circumpolar Arctic Vegetation Map

Direct Record Link
http://agc.portal.gina.alaska.edu/catalogs/9565-circumpolar-landscape-map-physiography
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-04-20 12:59:59 -0800
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    Updated by Jana
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    Updated by Jana
    2015-10-12 16:16:43 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2015-03-25 12:19:06 -0800
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    Updated by Lisa
    2015-03-25 11:22:47 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Published by Lisa
    2014-07-10 11:56:30 -0800
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    Updated by Lisa
    2014-07-10 11:56:26 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2014-07-10 11:54:30 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    New record created
    2014-07-10 11:50:05 -0800
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