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Layer: VEGETATION_OVERSTORY_VS_CLASSES (ID:0)

View In:   Map Viewer

Name: VEGETATION_OVERSTORY_VS_CLASSES

Display Field: MC_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The National Park Service (NPS) Vegetation Mapping Inventory (VMI) Program is an effort to classify, describe, and map existing vegetation communities in national park units across the United States. The NPS VMI Program is managed by the NPS Natural Resource Stewardship and Science (NRSS) Inventory and Monitoring Program (IMP) and provides baseline vegetation information to natural resource managers, researchers, and ecologists. The U.S. Geological Survey Upper Midwest Environmental Sciences Center, NatureServe, and NPS Great Smoky Mountains National Park (GRSM) have completed vegetation classification and mapping of GRSM for the NPS VMI Program. Mappers, ecologists, and botanists collaborated to affirm vegetation types within the U.S. National Vegetation Classification (USNVC) of GRSM and to determine how best to map them by using aerial imagery. 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 consisting of 90 USNVC association types, 1 park-special type, 1 map-special type, and 1 USNVC cultural type. For the remaining 6 of the overall 52 map classes, 4 represent USNVC cultural types for agricultural and developed areas, and 2 represent non-USNVC types for non-vegetated open water and non-vegetated rock. Features were interpreted from viewing digital aerial imagery using onscreen three-dimensional stereoscopic workflow systems in geographic information systems. (Digital aerial imagery was collected at three separate time periods in September and October 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-hectare (ha) or 0.25-ha minimum mapping unit (MMU), depending on vegetation type. This feature class (vegetation-map polygons) provides locations of map-class information to 36,589 polygons covering 210,875.1 ha, with an average polygon size of 6.2 ha; the vegetation map covers the extent of the GRSM and Foothills Parkway. This feature class is associated with a series of relate tables providing classification to natural (including ruderal) and cultural vegetation types in the USNVC and to accuracy assessment (AA) results of map classes representing natural (including ruderal) vegetation types in the USNVC.

Copyright Text: USGS Upper Midwest Environmental Sciences Center, NatureServe, NPS Great Smoky Mountains National Park, and NPS Vegetation Mapping Inventory Program

Min. Scale: 1155582

Max. Scale: 1128

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field: GlobalID

Type ID Field: VITAL_VEG

Fields:
Types:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 3/8/2025 3:20:43 AM

Schema Last Edit Date: 3/1/2025 10:58:27 PM

Data Last Edit Date: 3/1/2025 10:32:17 PM

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