The Grassland Vegetation Inventory (GVI) represents the Government of Alberta's
comprehensive biophysical, anthropogenic and land-use inventory of the southernmost
portion of the province's White Area. The compilation of the inventory commenced
in 2006 in the southeast corner of the province using digital colour-infrared stereo
photography. Data capture has proceeded north and west.
The GVI is intended as a replacement for the Native Prairie Vegetation Inventory
(NPVI) that was completed circa 1993. The GVI product is a more comprehensive and
detailed geospatial representation of land cover that is intended to meet a multitude
of business needs integral to land-use planning and management in Alberta. It should
be stressed that the GVI is a biophysical and land-use inventory rather than a purely
vegetation inventory. At its core, it is comprised of ecological range sites based
on soils information for areas of native vegetation and general land use for areas
of non-native vegetation, namely those associated with agricultural, industrial,
and residential developments.
Landscape Polygons are the basic map units in the GVI digital product. These polygons
represent interpretations of relatively uniform biophysical or anthropogenic areas.
The characteristics of Landscape Polygons are captured as records in the Sites table.
The GVI site type classification is captured under the Site Types column in the
Sites table to a maximum of four site types per Landscape Polygon. The GVI site
types and their associated information plus the data capture methodology are described
in the Grassland Vegetation Inventory Specifications.
GVI projects were initially funded under the Base Data Acquisition component of the Land-use Framework program, which represents the Alberta Government's comprehensive and integrated approach to land use planning and management. The primary
funding agency is Alberta Environment and Parks.
The GVI data, status map and specifications document are available from Alberta Environment and Parks, Government of Alberta.