Catalog Record: Alaska Arctic Lake Cover Map
Filename: imported_locations




Aga arctic ak lake cover 2005 1

Alaska Arctic Lake Cover Map

Lake cover strongly affects the reflectance of the land surface over large areas of Alaska, and was useful for identifying extensive wetlands. Lake cover was based on the number of AVHRR water pixels in each mapped polygon, divided by the number of pixels in the polygon. Since the imagery has a pixel size of 1 km2, lake cover is underestimated for areas with many small lakes. Pixels within 2 km of the coastline were excluded to avoid ocean water. The percent cover data were grouped into six categories: < 2%, 2-10%, 10-25%, 25-50%, 50-75%, and 75-100%. Since the sum of the last three categories was only 1.5%, (the 75-100% category covered 1% of the map), they were combined for the map into one category, >25%.

Back to Alaska Arctic Tundra Vegetation Map

Click Website Link :: Toolik Arctic Geobotanical Atlas below for details on legend units, photos of map units and plant species, glossary, bibliography and links to ground data.

Map Themes AVHRR NDVI, Bioclimate Subzone, Elevation, False Color-Infrared, Floristic Province, Lake Cover, Landscape, Substrate Chemistry, Vegetation


Raynolds, M.K., Walker, D.A., Maier, H.A. 2005. Plant community-level mapping of arctic Alaska based on the Circumpolar Arctic Vegetation Map. Phytocoenologia. 35(4):821-848. http://doi.org/10.1127/0340-269X/2005/0035-0821

Raynolds, M.K., Walker, D.A., Maier, H.A. 2006. Alaska Arctic Tundra Vegetation Map. 1:4,000,000. U.S. Fish and Wildlife Service. Anchorage, AK.


Data and Resources

  • Download

    Download :: GIS Data

    aga_arctic_ak_lake_cover_2005.shp.zip (191 KB)

  • Download

    Download :: Map Image

    aga_arctic_ak_lake_cover_2005.pdf (336 KB)

  • View website

    Website :: Toolik Arctic Geobotanical Atlas


Status: Complete
Type: Data
Data Types: GIS, Image, Map
Primary Contacts
Name: Donald A. (Skip) Walker
Email: dawalker@alaska.edu
Other Contacts
Name: Martha Raynolds
Email: mkraynolds@alaska.edu
Name: Alaska Geobotany Center (AGC)
Email: uaf-agc@alaska.edu
Primary Organizations
Alaska Geobotany Center

Alaska, Arctic

Alaska Arctic Tundra Vegetation Map
All Maps

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