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This coverage was digitized at the USA EPA from the 1979 Physiographic
Regions Map produced by the Bureau of Land Management, which added 10
physiognomic types to Kuchler's 1966 USGS Potential Natural Vegetation
map (and similarly differs from the 1985 US Geological Survey map
revised by Kuchler and others) The dataset consists of two thematic
layers a) Vegetation Form and b) Vegetation Type. Dataset is a
polygon coverage with 6700 meter mean consecutive point spacing.
Data for Arizona and New Mexico (USA) were extracted using
USGS HUC5 watersheds. Vegetation codes/names were then reclassified
(cross-walk) to fit the vegetation codes/types used by the model MC1
using the WWETAC-VDDT biogeography option.
03Feb2011 Wayne Robbie's, Jack Triepke's and Dave Conklin's
suggested changes
05Jan2012 I adjusted a few of the colors to be consistent with other datasets. --Dave Conklin
Data Provided By:
Kuchler, A.W.
Conservation Biology Institute
Content date:
not specified
Citation:
NOTE: the citation for the original Kuchler data is -
Kuchler, A.W. 1964. Potential Natural Vegetation of the
Conterminous United States. American Geographical Society, Special
Publication No. 36
Layers in this dataset are based on combinations of the following options.
You may choose from these options to select a specific layer on the map page.