Table · dataset · 2025
Vegetation - Great Valley Ecoregion [ds2632]
Listed in California Open Data
Geodatabase feature class containing a map of vegetation within the Great Valley Ecoregion produced by the Geographical Information Center (GIC) at CSU Chico.
Description
The dataset combines both new mapping and the previously completed Central Valley Riparian and Sacramento Valley and the Southern San Joaquin Valley vegetation maps. Vegetation polygons were manually digitized as interpreted using the National Agricultural Inventory Program's (NAIP) 2009 (Central Valley Riparian and Sacramento Valley map), 2012 (Southern San Joaquin Valley map) and 2014 (balance of San Joaquin Valley) aerial imagery at a scale of 1:2000.
The minimum mapping unit (mmu) for natural vegetation is 1.0 acre, with a minimum average width of 10 meters. The mmu for agricultural and urban polygons is 10 acres. Vegetation is attributed to the Group and Alliance level of the state and national vegetation hierarchy.
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In some cases, polygons were attributed only to Group or Macrogroup level when the Alliance could not be determined from photointerpretation. The map classification is based on the key to vegetation types in Buck-Diaz et al. 2012. The Central Valley and Sacramento Valley maps were assessed for Accuracy with an average users’ accuracy of 90.2 percent and users’ accuracy of 89 percent.
The San Joaquin Valley portion of the map was field verified by the mappers but was not otherwise assessed for accuracy (see Supplemental Information below for details). More information can be found in the project report, which is bundled with the vegetation map published for BIOS here: filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/2600_2699/ds2632.zip .
Links
Get the data
- Publisher page data-cdfw.opendata.arcgis.com/datasets/CDFW::vegetation-great-valley-ecoregion-ds2632-1 ↗
documentation · download · from data ca gov
- ArcGIS GeoService services2.arcgis.com/Uq9r85Potqm3MfRV/arcgis/rest/services/biosds2632_fpu/FeatureSe… ↗
download · from data ca gov
- CSV data-cdfw.opendata.arcgis.com/api/download/v1/items/8464cd4db7944d649127b5cb43fbdc78/csv?lay… ↗
download · from data ca gov
- Shapefile data-cdfw.opendata.arcgis.com/api/download/v1/items/8464cd4db7944d649127b5cb43fbdc78/shapefi… ↗
download · from data ca gov
- GeoJSON data-cdfw.opendata.arcgis.com/api/download/v1/items/8464cd4db7944d649127b5cb43fbdc78/geojson… ↗
download · from data ca gov
- KML data-cdfw.opendata.arcgis.com/api/download/v1/items/8464cd4db7944d649127b5cb43fbdc78/kml?lay… ↗
download · from data ca gov
- Vegetation - Great Valley Ecoregion [ds2632] filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/2600_2699/ds2632.zip ↗
download · from data ca gov
- Vegetation - Great Valley Ecoregion [ds2632] wildlife.ca.gov/Data/BIOS ↗
download · from data ca gov
Where it is published
- California Open Data dataset page data.ca.gov/dataset/vegetation-great-valley-ecoregion-ds2632 ↗
landing page · from data ca gov
Catalogue records · 1
- CKAN API data.ca.gov/api/3/action/package_show?id=ef4b3ba1-9961-4ef2-88ec-31a97f583… ↗
metadata API · from data ca gov
Topics
- Stated by source
- Natural Resources
- From keywords
- Earth & Environmental Science · Life Sciences
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| California Open Data | ef4b3ba1-9961-4ef2-88ec-31a97f58341a | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[topic].ckan_group:data_ca_gov:natural-resources | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| created_date | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| description | source · data ca gov | connector:data_ca_gov@1.0.0 | /notes |
| license_text | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| publication_date | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| title | source · data ca gov | connector:data_ca_gov@1.0.0 | /title |
| updated_date | source · data ca gov | connector:data_ca_gov@1.0.0 |