Geospatial data for the Vegetation Mapping Inventory Project of Homestead National Monument
Description
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.
Just over 698 acres, including 214 acres in the authorized boundary of HOME and an additional 484 acres in the environs, were mapped using ten map classes (Figure 5). This included four land cover classes and six vegetation classes. Of all the map units, the most frequent was Fraxinus pennsylvanica / Ulmus spp. / Celtis occidentalis Forest with 21 polygons. Fraxinus pennsylvanica / Ulmus spp. / Celtis occidentalis Forest was also the most abundant map unit in terms of area other than cropfields in the environs, covering 219 acres (89 hectares) or about 13% of the project area. All of the frequencies for each map unit (i.e., number of polygons) along with acreage per map unit are listed in Table 3.
Normally the standard minimum mapping unit for NPS vegetation mapping projects is defined as 0.5 hectare. However this is a nominal unit and due to the small size of HOME and the resolution of the imagery it was reduced to allow for more detail in the mapping. Therefore, 13 of the total 60 polygons were under 0.5 hectare. The average area of polygons for this project was 28.8 acres (11.6 hectares).
Resources
| Name |
Format |
Description |
Link |
|
57 |
ArcGIS geodatabase with metadata, .mxd and layer file |
https://irma.nps.gov/DataStore/DownloadFile/612157?Reference=2233309 |
Tags
- vegetation-inventory
- releve
- nvcs
- vegetation-mapping
- botanical-survey
- geodatabase
- national-vegetation-classification
- imagery
- vegetation
- vegetation-map
- remote-sensing
- classification
- habitat-types
- nvc
- plots
- accuracy-assessment
- usnvcs