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Arctic Alaska Substrate Chemistry Map

Differences in substrate chemistry, including pH, govern the availability of essential plant nutrients. Soils in the circumneutral range (pH 5.5-7.2) are generally mineral rich, whereas the full suite of essential nutrients is often unavailable in acidic soils (pH < 5.5) or in soils associated with calcareous bedrock (pH > 7.2). The latter often have unique assemblages of plant species. The substrate chemistry map is derived from a wide variety of sources including soil, surficial geology and bedrock geology maps, and from spectral patterns that could be recognized on the AVHRR base image. Carbonate substrates occur mostly in mountainous regions, while circumneutral substrates are mostly fine-grained loess occurring at lower elevations in foothills or plains. The Alaska Arctic Substrate Chemistry Map is a more detailed map of the Alaska portion of the Circumpolar Arctic Vegetation Map. The substrate chemistry mapping is the same as the Circumpolar Arctic Vegetation Map.

Back to Alaska Arctic Tundra Vegetation Map

Data and Resources

  • Download
    Download :: Map Image

    aga_arctic_ak_substrate_2005.jpg (1.46 MB)

  • Download
    Download :: GIS Data

    aga_arctic_ak_substrate_2005_shp.zip (204 KB)

  • View website
    Website :: Toolkit Arctic Geobotanical Atlas

    http://www.arcticatlas.org/maps/themes/ak/aksc

Status: Complete
Type: Data
Data Types: Image, GIS, Map
ISO Topics
biota, geoscientificInformation, imageryBaseMapsEarthCover

Geo-keywords
Alaska, Arctic

Collection
Alaska Arctic Tundra Vegetation Map, All Maps

Direct Record Link
http://geobotanical.portal.gina.alaska.edu/catalogs/10614-arctic-alaska-substrate-chemistry-map
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-02-17 18:39:05 -0900
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-02-17 18:38:09 -0900
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2015-10-12 14:24:41 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2015-10-12 14:16:32 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2015-10-07 18:22:49 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Published by Lisa
    2015-06-22 11:15:04 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2015-06-22 11:14:59 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    New record created
    2015-06-22 10:55:46 -0800
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