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Catalog Record: Arctic Alaska Substrate Chemistry Map
Filename: imported_locations

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Aga arctic ak substrate 2005

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.

Complete

Data and Resources

  • 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: GIS, Image, Map
Regions
Alaska, Arctic

Source Portal
NSSI Portal

Direct Record Link
http://alaskaaga.gina.alaska.edu/catalog/entries/5506-arctic-alaska-substrate-chemistry-map
Direct Full Map Link
http://alaskaaga.gina.alaska.edu/catalog/entries/5506-arctic-alaska-substrate-chemistry-map/map