GI007
Transportation network system including trails, road construction history, and gates for the Andrews Experimental Forest, 1952-2011

CREATOR(S): George W. Lienkaemper, Mark D Schulze

PRINCIPAL INVESTIGATOR(S): Mark D Schulze

ORIGINATOR(S): George W. Lienkaemper

DATA SET CONTACT PERSON: Theresa J. Valentine

METADATA CONTACT: Theresa J. Valentine

ABSTRACTOR: Theresa J. Valentine

METADATA CREATION DATE:

11 May 2005

MOST RECENT METADATA REVIEW DATE:

19 Feb 2014

KEYWORDS:

Disturbance, disturbance, roads

PURPOSE:

For use in base map production, forest access, transportation planning, and as reference points to other data. The road construction history documents the road construction process over time. This data has been used as a basis for researching invasive plant migration into the Andrews Experimental Forest.

METHODS:

Processing Procedures - GI007:

Description: GI00801: Road Network: digitized from 1:60000 air photos, using AP190 analytical stereo plotter. Data was updated in 2004 for the new Andews Map. A code was added for status and identified those roads that were abandoned. Coverage was converted to a shapefile and projected to Nad83 Datum. The data was converted into a geodatabase and updated using the 2008 Lidar bare earth DEM. The new roads layer was attributed with road number and name, and then annotation was created to place the road numbers on a map product. The annotation is linked to the arc-line road layer. This linkage would be dropped if converted to a shapefile, therefore the data is provided as a file geodatabase. A shapefile of the roads can be obtained by request.

Processing Procedures - GI007 (1):

Description: GI00802: Trail locations from Willamette National Forest GIS database was plotted onto a base map. The Andrews staff reviewed the existing locations, and made changes. The resulting hardcopy map was used to edit the existing data by digitizing on-screen. The results were verified by Andrews field staff. Trail names were added as an attribute. Coverage was converted to a shapefile and projected to Nad83 Datum. Andrews staff updated the layer by using GPS technology, and the layer was updated in preparation for the 2011 Andrews Map.

Processing Procedures - GI007 (2):

Description: GI00803: Gates: The shapefile was digitized on-screen from map locations that were placed on hard copy of Andrews Base Map. The results were verified by Andrews field staff. . An attribute was added to insure the proper orientation of gate symbols for the map.

TAXONOMIC SYSTEM:

None

GEOGRAPHIC EXTENT:

Andrews Experimental Forest within the Willamette National Forest, western Cascades, Oregon, USA.

ELEVATION_MINIMUM (meters):

ELEVATION_MAXIMUM (meters):

PROGRESS DESCRIPTION:

Complete

UPDATE FREQUENCY DESCRIPTION:

asNeeded

CURRENTNESS REFERENCE:

Observed