SRCCODE
(
type: esriFieldTypeInteger
, alias: SRCCODE
, Coded Values:
[20: BLM - Other agency lands]
, [5: Bureau of Land Management]
, [6: CA Dept of Fish and Game]
, ...17 more...
)
Description: This Existing Vegetation (Eveg) polygon feature class is a CALVEG (Classification and Assessment with LANDSAT of Visible Ecological Groupings) map product from a scale of 1:24,000 to 1:100,000 for CALVEG Zone 5, the Central Valley. Source imagery for this layer ranges from the year 1998 to 2007. The CALVEG classification system was used for vegetation typing and crosswalked to other classification systems in this database. USGS Land Use / Land Cover Anderson 1 classification system is included in the database to meet national standard requirements. Mapping standards meet requirements of the USDA Forest Service as defined by the FS GIS data dictionary, FGDC Vegetation standards and the FS Existing Vegetation Classification and Mapping Technical Guide. Regional add-ons are retained for crosswalking to the California Wildlife Habitat Relationship System (CWHR).For a description of CALVEG and a data dictionary for codes in this database, go to the Existing Vegetation Layer Description at http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5365219.For an index of CALVEG zones, go to http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192and select the link called Existing Vegetation Tiles Index.For a CALVEG mapping status by scale and year, go to http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192and select the "Existing Vegetation Mapping Status by Year, Scale and Project" link. *******Note: This layer is comprised of "multi-part" features, spatially separate polygons sharing the same attributes and stored as a single feature. A group of islands could be represented as a multi-part polygon feature. This allows for reduction in the size of the database and portability across a network. For analysis purposes however, it is wise to select a smaller area of interest and break apart features using the "Multipart To Singlepart" tool in ArcGIS. In its entirety, a "single-part" format of this feature class can potentially be more than one million polygons.
Description: Geodatabase (SDE) feature class containing map of vegetation along mainstem rivers and major tributaries (including ancillary natural and semi-natural vegetation) found within the Department of Water Resources Central Valley Flood Protection Program's Systemwide Planning Area (SPA). This map includes vegetation outside of the SPA within Great Valley Ecoregion (GVE) of the Central Valley from the King's River drainage north to the town of Red Bluff and vegetation above the GVE along the mainstem of the Sacramento River to Keswick Dam. Data was modified based on Accuracy Assessment feedback from the CA DFG in August 2011. Data was originally developed from June 2010 through April 2011 from interpretation of the National Agicultural Inventory Program's 2009 (NAIP 2009) aerial imagery and hand-digitized at a minimum mapping unit (mmu) of 1.0-acres with a minimum average width of 10-meters per polygon. Medium-scale vegetation categories were based on the National Vegetation Classification System (NVCS) "group-level" as interpreted in Appendix 3 (pp. 1227-1240) of the Manual of California Vegetation, 2nd Ed. (Sawer et.al. 2009). "Medium-scale" thus refers to the mid-level thematic resolution for vegetation used for the map. This medium-scale mapping effort incorporated provisional group categories where no clear relationship between vegetation types and NVCS groups existed.
Unique Value Renderer: Field 1: NVCSNAME Field 2: null Field 3: null Field Delimiter: , Default Symbol:
N/A
Default Label: null UniqueValueInfos:
Value: Mediterranean California naturalized annual and perennial grassland Label: CAI-Mediterranean California naturalized annual and perennial grassland Description: Symbol:
Value: Southwestern North American riparian evergreen and deciduous woodland Label: RWF-Southwestern North American riparian evergreen and deciduous woodland Description: Symbol: