File Geodatabase Feature Class
Tags
vegetation, 1997, plant communities, Vegetation, biota, environment, imageryBaseMapsEarthCover
A 1997 vegetation map for Yosemite National Park, which provides baseline ecological information to resource managers in Yosemite NP; puts these data into a regional and national context; and provides opportunities for future inventory, monitoring, and research activities.
This is the vegetation of Yosemite National Park and beyond the boundary. The data were produced from 1997 color infrared analog photographs flown by Photo Science through a nationwide contract. ESRI (Environmental Systems Research Institute) was the contrator that coordinated the work. Hundreds of vegetation plots were surveyed within the park and outside the park boundaries by the National Park Service, the U.S. Geological Survey, and The Nature Conservancy. The photointerpretation of the 1997 photos was performed by Aerial Information Systems (Redlands, CA). Photointerpretation was conducted manually using analog photos in stereo pairs and then the polygon boundaries were georeferenced to DOQQS to georectify the map. A plant community classification was developed by NatureServe (in cooperation with the California Department of Fish and Game and California Native Plant Society) by running cluster analysis on the plot data from 604 sites surveyed in 1998 and 1999, 362 sites surveyed in 1989 to 1993, and 774 sites surveyed in 1935 to 1937. A list of mappable types was developed and crosswalked to the floristic classification based on the cluster analysis ('MappingClasstoVegClassTable.xls'). Mapping classification type names are found in 'TYPENAME.dbf;' mapping classification definitions by type are located in Final Comprehensive Mapping Classification Descriptions.doc. The mapping classes were coded and assigned to individual polygons in the vegetation map along with codes for canopy closure, fire severity where applicable, and land use. The floristic classification, key to types and type descriptions are located in the document 'Yosemite Classification Report.doc.' Accuracy assessment field data were collected by NatureServe and analyzed by the NPS and the USGS. Photointerpretation and georectification were completed in 2003; accuracy assessment was completed in 2006. Fields that relate the dataset to the National Vegetation Classification System, the California Wildlifre Habitat Relationship system, and CalVeg system were added to the original dataset by the California Dept. of Fish and Wildlife's Vegetation and Classification Program.
National Parks Service U.S. Department of the Interrior California Department of Fish and Wildlife
Any use must first be approved by Yosemite National Park, Division of Resources Management and Science, Physical Science and GIS branch.
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Extent
West | -120.026088 | East | -119.022136 |
North | 38.280681 | South | 37.433927 |
Maximum (zoomed in) | 1:5,000 |
Minimum (zoomed out) | 1:150,000,000 |
Any use must first be approved by Yosemite National Park, Division of Resources Management and Science, Physical Science and GIS branch.
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.