Geospatial data for the Vegetation Mapping Inventory Project of Great Smoky Mountains National Park

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.

To map the vegetation and land cover of GRSM, 52 map classes were developed. Of these 52 map classes, 46 represent natural (including ruderal) vegetation types, most of which types are recognized in the USNVC. For the remaining 6 of the 52 map classes, 4 represent USNVC cultural types for agricultural and developed areas, and 2 represent non-USNVC types for nonvegetated open water and nonvegetated rock. Features were interpreted from viewing four-band digital aerial imagery using digital onscreen three-dimensional stereoscopic workflow systems in geographic information systems; digital aerial imagery was collected during September 23–October 30, 2015. The interpreted data were digitally and spatially referenced, thus making the spatial-database layers usable in a geographic information system. Polygon units were mapped to either a 0.5- or 0.25- hectare (ha) minimum mapping unit, depending on vegetation type. A geodatabase containing several feature-class layers and tables provides the locations and data of USNVC vegetation types (vegetation map layer), vegetation plots, verification sites, AA sites, project boundary extent, and aerial image centers and flight lines. Covering 210,875 ha, the feature-class layer and related tables for the vegetation map layer provide 34,084 polygons of detailed attribute data when special modifiers are not considered (average polygon size of 6.2 ha) and 36,589 polygons of detailed attribute data when special modifiers are considered (average polygon size of 5.8 ha). Each map polygon is assigned a map-class code and name and, when applicable, are linked to USNVC classification tables within the geodatabase. The vegetation map extent includes the administrative boundary for GRSM and the Foothills Parkway.

Data e Risorse

Campo Valore
accessLevel public
bureauCode {010:24}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
dataQuality true
datagov_dedupe_retained 20211111042402
identifier NPS_DataStore_2287470
issued 2021-01-01
landingPage https://irma.nps.gov/DataStore/Reference/Profile/2287470
modified 2021-01-01
old-spatial {"type": "Polygon", "coordinates": [[[-84.0138855, 35.4268951], [-84.0138855, 35.8413849], [-82.99804, 35.8413849], [-82.99804, 35.4268951], [-84.0138855, 35.4268951]]]}
programCode {010:118,010:119}
publisher National Park Service
references {https://irma.nps.gov/DataStore/Reference/Profile/2287470}
resource-type Dataset
source_datajson_identifier true
source_hash 2d7e13e1763034aac83fb14e198a77ee87a49f87
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-84.0138855, 35.4268951], [-84.0138855, 35.8413849], [-82.99804, 35.8413849], [-82.99804, 35.4268951], [-84.0138855, 35.4268951]]]}
temporal 2015-01-01/2020-01-01
theme {"Geospatial Dataset"}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • accuracy-assessment
  • amerigeo
  • amerigeoss
  • botanical-survey
  • ckan
  • classification
  • geo
  • geodatabase
  • geoss
  • habitat-types
  • imagery
  • national
  • national-vegetation-classification
  • north-america
  • nvc
  • nvcs
  • plots
  • releve
  • remote-sensing
  • united-states
  • usnvcs
  • vegetation
  • vegetation-inventory
  • vegetation-map
  • vegetation-mapping
isopen False
license_id notspecified
license_title License not specified
maintainer NPS IRMA Help
maintainer_email irma@nps.gov
metadata_created 2025-11-22T13:59:40.436316
metadata_modified 2025-11-22T13:59:40.436321
notes 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. To map the vegetation and land cover of GRSM, 52 map classes were developed. Of these 52 map classes, 46 represent natural (including ruderal) vegetation types, most of which types are recognized in the USNVC. For the remaining 6 of the 52 map classes, 4 represent USNVC cultural types for agricultural and developed areas, and 2 represent non-USNVC types for nonvegetated open water and nonvegetated rock. Features were interpreted from viewing four-band digital aerial imagery using digital onscreen three-dimensional stereoscopic workflow systems in geographic information systems; digital aerial imagery was collected during September 23–October 30, 2015. The interpreted data were digitally and spatially referenced, thus making the spatial-database layers usable in a geographic information system. Polygon units were mapped to either a 0.5- or 0.25- hectare (ha) minimum mapping unit, depending on vegetation type. A geodatabase containing several feature-class layers and tables provides the locations and data of USNVC vegetation types (vegetation map layer), vegetation plots, verification sites, AA sites, project boundary extent, and aerial image centers and flight lines. Covering 210,875 ha, the feature-class layer and related tables for the vegetation map layer provide 34,084 polygons of detailed attribute data when special modifiers are not considered (average polygon size of 6.2 ha) and 36,589 polygons of detailed attribute data when special modifiers are considered (average polygon size of 5.8 ha). Each map polygon is assigned a map-class code and name and, when applicable, are linked to USNVC classification tables within the geodatabase. The vegetation map extent includes the administrative boundary for GRSM and the Foothills Parkway.
num_resources 1
num_tags 25
title Geospatial data for the Vegetation Mapping Inventory Project of Great Smoky Mountains National Park