BLM REA YKL 2011 Vegetation Map and Classification of Yukon River Lowlands - Kuskokwim Mountains - Lime Hills

Metadata Updated: July 8, 2019

We developed a coarse-scale and fine-scale vegetation classification and map for Northern, Western, and Interior Alaska including the Cook Inlet Basin. To produce the map we mosaicked—using ArcGIS—18 regional maps developed over the past 1 to 14 years and one map developed 27 years ago. Regional map spatial resolutions ranged from 30 x 30 m pixel or finer for satellite imagery, and 1:63,360 or finer for aerial photography. We converted the pixel size of each satellite image map and aerial photography polygons to a 30 x 30 m pixel resolution raster format. Prior to mosaicking the regional maps, we developed a coarse-scale legend common to all of the maps. We based our legend on a variety of Ducks Unlimited (DU) maps developed with various federal agencies (primarily, the USDI Bureau of Land Management, and USDI Fish and Wildlife Service) that used nearly identical legends and extended across most of Alaska. These maps used a variation of levels III and IV of The Alaska Vegetation Classification (Viereck et al,1992). We continued to refine the legend as we added other regional classifications to the original DU/BLM legend. The other regional mapping efforts included the USDI National Park Service, USDA National Forest Service-State and Private Forestry, LANDFIRE, The Nature Conservancy of Alaska, Audubon Alaska, USDI Fish and Wildlife Service, U.S. Geological Survey and the USDA Natural Resources Conservation Service. We were able to add the additional legends because they were either derived from or directly used some variation of levels III and IV of The Alaska Vegetation Classification (Viereck et al,1992). For the fine-scale legend, we attempted to keep all of the original classes and the level of detail from each regional map used for mosaicking. Some of the regional maps used an ecosystem or landscape classification approach (e.g. National Wetlands Inventory, Ecotypes) and we also retained the landscape detail in the fine-scale classes. We list and describe 34 coarse-scale classes and list 338 fine-scale classes. In addition, as authors produce new regional maps, the Alaska Natural Heritage Program (UAA) will continue to mosaic them into this map.

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Metadata Date September 20, 2018
Metadata Created Date May 1, 2019
Metadata Updated Date July 8, 2019
Reference Date(s) October 29, 2014 (publication)
Frequency Of Update asNeeded
Frequency Of Update asNeeded

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Harvested from DOI CKAN Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date September 20, 2018
Metadata Created Date May 1, 2019
Metadata Updated Date July 8, 2019
Reference Date(s) October 29, 2014 (publication)
Responsible Party Alaska Natural Heritage Program, University of Alaska Anchorage (Point of Contact)
Contact Email
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Bbox East Long -150.162192
Bbox North Lat 66.456266
Bbox South Lat 59.068723
Bbox West Long -162.555795
Coupled Resource
Frequency Of Update asNeeded
Harvest Object Id 4b7d1dc3-774a-48c0-b929-76defea749f4
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
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Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true

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