This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. The project area is covered by 28 flight lines flown south to north for the 1:12,000 scale photography and 10 flight lines for the 1:40,000 scale photography. Some of the flight lines overlap with repeat flights due to elevation and scale considerations. A total of 1,412 color photographs were taken at 1:12,000 (1"=1,000') scale and 366 color photographs for the 1:40,000 (1" = 3,333') all printed on 9"x 9" paper stock. Overlap for all photographs was approximately 50-60% and sidelap between flight lines was approximately 20-30%. All photography was acquired between September 25 and October 3, 2001. Repeat dates were required due to the large area being acquired in addition to the challenging terrain. Airborne GPS was collected with a base station at the Fort Collins, Colorado Airport (Latitude: 40 26 58.07884; Longitude:-105 00 24.66076; Height:1509.710 m; Antenna ht:0.203 m). GPS points provided for a flight line point shape file and aided with the ortho-rectification process

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. Vegetation and land use were interpreted to as detailed a level possible from high-resolution, 9” x 9” stereo pairs of 1:12,000-scale true color aerial photography. Polygons representing vegetation or land use map classes were delineated directly on-screen through heads-up digitizing using ArcGIS editing tools and transferred to a spatial database. The project used the program standard minimum mapping unit of 0.5 ha with few exceptions.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. Vegetation and land use were interpreted to as detailed a level as possible from high-resolution, 9” x 9” stereo pairs of 1:12,000-scale true color aerial photography. Polygons representing vegetation or land use map classes were delineated on Mylar overlays on aerial photographs (where signatures were confusing) and with the heads-up digitizing technique (where signatures had high contrast), then transferred to a spatial database. The project used the national program standard minimum mapping unit of 0.5 ha with few exceptions.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. Photointerpreters delineated initial polygons through manual interpretation of 2003/2004 1:12,000-scale true color aerial photography supplemented by occasional computer screen digitizing on a mosaic of digitized aerial photos. These polygons were labeled with base map classes during photointerpretation. Field visits verified interpretation concepts.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. Photointerpreters delineated initial polygons through manual interpretation of 2003/2004 1:12,000-scale true color aerial photography supplemented by occasional computer screen digitizing on a mosaic of digitized aerial photos. These polygons were labeled with base map classes during photointerpretation. Field visits verified interpretation concepts.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. Imagery can also be downloaded at: https://earthexplorer.usgs.gov The rectified, full-resolution orthoimages used to map vegetation for the Appalachian National Scenic Trail are now available through the USGS Earth Explorer imagery portal. They are housed under the "Data Set" tab, "Aerial Imagery" data, "High Resolution Orthoimagery" checkbox. If you have a specific site in mind you can search a geographic area, otherwise you may search for them in the "Dataset Name" field under the "Additional Criteria" tab using "appalachian_trail_appa" Digital 4-band—true-color and color-infrared—aerial imagery was acquired in the months of October during 3 years (2009–11) for the APPA vegetation mapping project using a plane-mounted digital camera. This set of imagery became the primary source for image interpretation and mapping. The aerial imagery was collected at a pixel resolution of 30.48 centimeters (centimeter measurement calculated from a standard 12-inch measurement). The goal of fall-dated imagery, particularly with the color infrared bands, was to capture peak leaf-phenology change of hardwood trees; thus, aiding mappers in viewing distinctions among various hardwood-forest types. With the AT corridor being nearly 3,525 kilometers in length, the aerial imagery mission was flown in segments over 3 years to capture peak-leaf phenology, after leaf color change but prior to leaf fall. Priority was given to peak-leaf phenology in the higher elevations to ensure that all forest species were in leaf-on status for viewing on computers to successfully complete fieldwork and mapping.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. Imagery can also be downloaded at: https://earthexplorer.usgs.gov The rectified, full-resolution orthoimages used to map vegetation for the Appalachian National Scenic Trail are now available through the USGS Earth Explorer imagery portal. They are housed under the "Data Set" tab, "Aerial Imagery" data, "High Resolution Orthoimagery" checkbox. If you have a specific site in mind you can search a geographic area, otherwise you may search for them in the "Dataset Name" field under the "Additional Criteria" tab using "appalachian_trail_appa" Digital 4-band—true-color and color-infrared—aerial imagery was acquired in the months of October during 3 years (2009–11) for the APPA vegetation mapping project using a plane-mounted digital camera. This set of imagery became the primary source for image interpretation and mapping. The aerial imagery was collected at a pixel resolution of 30.48 centimeters (centimeter measurement calculated from a standard 12-inch measurement). The goal of fall-dated imagery, particularly with the color infrared bands, was to capture peak leaf-phenology change of hardwood trees; thus, aiding mappers in viewing distinctions among various hardwood-forest types. With the AT corridor being nearly 3,525 kilometers in length, the aerial imagery mission was flown in segments over 3 years to capture peak-leaf phenology, after leaf color change but prior to leaf fall. Priority was given to peak-leaf phenology in the higher elevations to ensure that all forest species were in leaf-on status for viewing on computers to successfully complete fieldwork and mapping.

This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. Existing sources of imagery were evaluated for vegetation mapping and geodatabase development for CIRO. Among the current sources of imagery were NAIP products from which the 2006 1-meter resolution product was determined adequate for mapping. The 2006 NAIP imagery was originally used to delineate obvious land-use and physiognomic boundaries. However in 2009, NAIP acquired new 1-meter resolution (true-color format) for the entire state of Idaho. Following examination, the 2009 NAIP imagery for Cassia County, Idaho was deemed superior in color and was more recent so the vegetation mapping was switched from the 2006 imagery to the 2009 product (Figure 12). All previous land-use and physiognomic linework was updated and the final map product is based solely on the 2009 NAIP ortho-imagery.