This polygon feature class represents vegetation communities mapped at Arches National Park to an alliance or association level, depending on the photo signature. The polygons were generated using guidelines set by the Standardized National Vegetation Classification System (October 1995). Original lines were drawn on mylar overlays using the DOQs collected in June of 2002. Hard copy 9x9 photography was used for photo interpretation. Traditional image interpretation cues were used to develop the polygons, such as shape, size, pattern, tone, texture, color, and shadow. Additional data layers were used in aiding the interpretation, such as slope, hydrology, soils, geography, and ground-collected vegetation information. The minimum mapping unit was 1/2 hectare. The lines developed in the image interpretation step were scanned using a large format scanner. The resultant scanned image was converted into line work for use within ArcGIS. The line work was cleaned, polygons created and attributed. The attributed vegetation classes were subjected to an accuracy assessment, following which final adjustments were made to the vegetation classes. As with any digital layer, this layer is a representation of what is actually occurring on the ground. Errors are inherent in any interpretation of ground qualities. Due to the "snapshot" nature of the DOQs, this vegetation layer reflects conditions that existed when the imagery was collected.

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for Arches National Park. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. Thirty-one (30 polygon and 1 point) natural and semi-natural vegetation map classes were developed for the ARCH mapping project, represented by 6,709 map polygons. Twelve land use map classes describe 193 other polygons within the mapping area. An additional 222 polygons represent exposures of two unvegetated geologic formations. Average polygon size across all map classes is 7.3 ha (18.0 acres). Natural and semi-natural vegetation classes cover 52,521 ha (124,171 acres / 95.6% of the project area). Map classes representing unvegetated bedrock total 1,295 ha (3,200 acres / 2.5% of the project area). Land use/land cover polygons, including roads, commercial developments, mining facilities and NPS facilities total 1,010 ha (2,497 acres / 1.9% of the project area). The most frequent vegetation mapping unit is Blackbrush Shrublands (Map Class 10 / S-BLAC) with 1,457 polygons covering 9,073 ha (22,407 acres) or 17% of the project area.

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for Arches National Park. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. Thirty-one (30 polygon and 1 point) natural and semi-natural vegetation map classes were developed for the ARCH mapping project, represented by 6,709 map polygons. Twelve land use map classes describe 193 other polygons within the mapping area. An additional 222 polygons represent exposures of two unvegetated geologic formations. Average polygon size across all map classes is 7.3 ha (18.0 acres). Natural and semi-natural vegetation classes cover 52,521 ha (124,171 acres / 95.6% of the project area). Map classes representing unvegetated bedrock total 1,295 ha (3,200 acres / 2.5% of the project area). Land use/land cover polygons, including roads, commercial developments, mining facilities and NPS facilities total 1,010 ha (2,497 acres / 1.9% of the project area). The most frequent vegetation mapping unit is Blackbrush Shrublands (Map Class 10 / S-BLAC) with 1,457 polygons covering 9,073 ha (22,407 acres) or 17% of the project area.

국립생태원에서 수행한 생태계정밀조사의 조사지역(면) 정보입니다. 조사지역의 위치정보(면)이 포함되어 있습니다.

These data were converted from the originally delivered Microsoft Access PLOTs database from the Vegetation Mapping Inventory Project of Arches National Park. These comma-delimited data tables contain(s) vegetation mapping plot classification and accuracy assessment data, as well as summary information about the data itself. If a table is empty, then it was empty in the original database.

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. A total of 237 acres (96 hectares) are within the accepted boundaries of GWCA (Figure 8). The standard minimum mapping unit for NPS vegetation mapping projects is defined as 0.5 hectare, although several mapped polygons were smaller for GWCA. Restored tallgrass prairie made up most of the current vegetation of the park, and accounted for 134 acres (54.1 ha) in eight polygons, or 56.5% of the total area. Ruderal woodland and forest was the next most abundant with 53.6 acres in eight polygons, or 22.6% of the park. Non-native ruderal grassland and ruderal shrubland accounted for 25 acres (10.1 ha or 10.5%) and 2.2 acres (0.9 ha or <1%) of the area of the park, respectively. Developed land accounts for 21.9 acres (8.9 ha), or 9.2% of the park. A total of 36 polygons were mapped, with an average area of 15.2 acres (6.1 ha).

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. A total of 237 acres (96 hectares) are within the accepted boundaries of GWCA (Figure 8). The standard minimum mapping unit for NPS vegetation mapping projects is defined as 0.5 hectare, although several mapped polygons were smaller for GWCA. Restored tallgrass prairie made up most of the current vegetation of the park, and accounted for 134 acres (54.1 ha) in eight polygons, or 56.5% of the total area. Ruderal woodland and forest was the next most abundant with 53.6 acres in eight polygons, or 22.6% of the park. Non-native ruderal grassland and ruderal shrubland accounted for 25 acres (10.1 ha or 10.5%) and 2.2 acres (0.9 ha or <1%) of the area of the park, respectively. Developed land accounts for 21.9 acres (8.9 ha), or 9.2% of the park. A total of 36 polygons were mapped, with an average area of 15.2 acres (6.1 ha).

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. We developed the vegetation map for Petroglyph National Monument (PETR) using a strategy that combined automated digital image classification and direct analog image interpretation of aerial photography and satellite imagery. Initially, the aerial photography and satellite imagery were processed and entered into a GIS, along with ancillary spatial layers. We developed a working map legend of ecologically-based vegetation map units using the NVCS classification described in Chapter 2 as the foundation. The intent was to develop map units that targeted the plant-association level wherever possible, within the constraints of image quality, information content, and resolution. With the provisional legend and ground-control points provided by the field-plot data (the same data used to develop the vegetation classification), we conducted heads-up screen digitizing of polygons based on image interpretation, and supervised image classifications. The outcome was a vegetation map composed of a suite of map units defined by plant associations and represented by sets of mapped polygons with similar spectral and site characteristics. The PETR vegetation map is at a 1:12,000 scale with 0.25 ha minimum map unit size, and was designed to facilitate ecologically- based natural resources management.

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. We developed the vegetation map for Petroglyph National Monument (PETR) using a strategy that combined automated digital image classification and direct analog image interpretation of aerial photography and satellite imagery. Initially, the aerial photography and satellite imagery were processed and entered into a GIS, along with ancillary spatial layers. We developed a working map legend of ecologically-based vegetation map units using the NVCS classification described in Chapter 2 as the foundation. The intent was to develop map units that targeted the plant-association level wherever possible, within the constraints of image quality, information content, and resolution. With the provisional legend and ground-control points provided by the field-plot data (the same data used to develop the vegetation classification), we conducted heads-up screen digitizing of polygons based on image interpretation, and supervised image classifications. The outcome was a vegetation map composed of a suite of map units defined by plant associations and represented by sets of mapped polygons with similar spectral and site characteristics. The PETR vegetation map is at a 1:12,000 scale with 0.25 ha minimum map unit size, and was designed to facilitate ecologically- based natural resources management.