COVERAGE NAME: CALVEG77 FEATURE TYPE: polygon SOURCE: Parker and Matyas, 1977. Landsat Data. AREAL EXTENT: statewide DATE OF LAST UPDATE: 3/13/96 COVERAGE DESCRIPTION: This layer is a polygon coverage which shows 73 dominant vegetation types for California. The coverage was developed from scanned 1:250,000 scale paper source maps. The minimum mapping unit is 400 acres. This is not a coverage to be used in conjunction with large-scale data. This layer is a two-level hierarchical classification system of actual vegetation designed to assess broad scale resources throughout California (Parker and Matyas 1979). Approximately 125 vegetation series were identified but only 73 series were actually mapped. Each series is defined by the dominant overstory species of the community (e.g., Ponderosa Pine series). Structural information (e.g., tree size or canopy closure) was not mapped. The source mapping was done between 1979 and 1981 by U. S. Forest Service ecologists. The mapping process involved photo-interpretation of 1:250,000 scale color infra-red prints of Landsat Multispectral Scanner (MSS) imagery acquired between 1977 and 1979. The average polygon size is 38,000 acres for the entire state (excluding polygons along map edges). Consequently, many important vegetation communities that occur in smaller units are not distinguished. The California Department of Forestry and Fire Protection created the digital 'VEG' coverage by scanning the source maps. INFO ITEMS: INPUT OUTPUT DATA DECI DESCRIPTION ITEM NAME WIDTH WIDTH TYPE MALS ----------- ----- ----- ---- ---- ---------------------------------- SPECIES 2 2 C - SPECIES CODE WHR 3 3 C - WHR TYPE CVNAME 30 30 C - CALVEG NAME WHRNAME 30 30 C - WHR NAME AC Cushion Plan ADS Alpine Dwarf-Shrub AP Atriplex ASC Alkali Desert Scrub BA Barren BAR Barren BB Bitterbrush BBR Bitterbrush BL Low Sagebrush LSG Low Sage BP Bristlecone Pine SCN Subalpine Conifer BS Sagebrush SGB Sagebrush BT Big Tree SMC Sierran Mixed Conifer CA Chamise CRC Chamise-Redshank Chaparral CC Ceanothus MCH Mixed Chaparral CE Mariposa Manzanita MCH Mixed Chaparral CG Greenleaf Manzanita MCP Montane Chaparral CH Huckleberry Oak MCP Montane Chaparral CI Deerbrush MCP Montane Chaparral *CM Montane Mixed Shrub CRC Chamise-Redshank Chaparral *CM Montane Mixed Shrub MCP Montane Chaparral CO Sumac CSC Coastal Scrub CS Scrub Oak MCH Mixed Chaparral CV Tobacco Brush MCP Montane Chaparral CW Whiteleaf Manzanita MCH Mixed Chaparral CX Manzanita MCP Montane Chaparral DA Blackbush DSC Desert Scrub DB Desert Buckwheat DSC Desert Scrub DC Cholla DSS Desert Succulent Shrub DF Douglas Fir - Tanoak - Madrone DFR Douglas-Fir DL Creosote DSC Desert Scrub DP Douglas Fir - Pine - Madrone DFR Douglas-Fir DS Shadscale ASC Alkali Desert Scrub EA Englemann Spruce - Alpine Fir KMC Klamath Mixed Conifer HC Pickleweed - Cordgrass SEW Saline Emergent Wetland HG Annual Grass - Forb AGS Annual Grass HM Perennial Grass PGS Perennial Grass HS Beachgrass - Ryegrass PGS Perennial Grass HW Mule Ears SGB Sagebrush JP Jeffrey Pine JPN Jeffrey Pine LP Lodgepole Pine LPN Lodgepole Pine *MF Mixed Conifer - Fir KMC Klamath Mixed Conifer *MF Mixed Conifer - Fir SMC Sierran Mixed Conifer MH Mountain Hemlock SCN Subalpine Conifer *MP Mixed Conifer - Pine EPN Eastside Pine *MP Mixed Conifer - Pine KMC Klamath Mixed Conifer *MP Mixed Conifer - Pine MHC Montane Hardwood-Conifer *MP Mixed Conifer - Pine SMC Sierran Mixed Conifer PB Brewer Spruce KMC Klamath Mixed Conifer PC Coulter Pine MHC Montane Hardwood-Conifer PJ Singleleaf Pinyon PJN Pinyon-Juniper PM Bishop Pine CPC Closed-cone Pine-Cypress PP Ponderosa Pine PPN Ponderosa Pine PR Monterey Pine CPC Closed-cone Pine-Cypress PT Torrey Pine CPC Closed-cone Pine-Cypress QA Coast Live Oak COW Coastal Oak Woodland QC Canyon Live Oak MHW Montane Hardwood QD Blue Oak BOW Blue Oak Woodland QG Oregon White Oak MHW Montane Hardwood QH Madrone - Black Oak COW Coastal Oak Woodland QK Black Oak MHW Montane Hardwood QL Valley Oak VOW Valley Oak Woodland QP California Sycamore VRI Valley Foothill Riparian *QR Red Alder MHC Montane Hardwood-Conifer *QR Red Alder MRI Montane Riparian QT Tanoak - Madrone MHW Montane Hardwood QW Interior Live Oak MHW Montane Hardwood QY Willow - Alder MRI Montane Riparian RD Redwood - Douglas Fir DFR Douglas-Fir RF Red Fir RFR Red Fir RW Redwood RDW Redwood SB Coastal Buckwheat CSC Coastal Scrub SG Sitka Spruce - Grand Fir RDW Redwood SS California Sagebrush CSC Coastal Scrub UA Urban - Agriculture UAG Urban-Agriculture UI Desert Ironwood DSW Desert Wash UJ Joshua Tree JST Joshua Tree UP Paloverde DSW Desert Wash UT Tamarisk DRI Desert Riparian WA Water WAT Water WF White Fir WFR White Fir WJ Western Juniper JUN Juniper WP Washoe Pine JPN Jeffrey Pine * CM, MF, MP, and QR require rules to define crosswalk. - CM -- Crosswalks primarily to MCP except for 1 polygon in the southern part of the state that goes to CRC due to a redshank component. - MF -- Crosswalks to KMC, SMC, or WFR based on location. - MP -- Crosswalks to KMC, SMC, EPN, or MHC based on location. - QR -- Crosswalks primarily to MRI except for 3 polygons on the Humboldt coast that crosswalks to MHC. DATA QUALITY ASSESSMENT: The following are subjective comments regarding this data. The source maps were field checked at the time of its compilation, but estimates of its accuracy were not published. Preliminary non-spatial and spatial error analyses have been conducted by the National Center for Geographic Information and Analysis. In general, high classification error rates (overall agreement 30%) were documented for the data. Overall map accuracy increased to 65% following simplification of the vegetation classification into four formation types: conifer, hardwood, shrub, herbaceous. DATA CONTACT: Contact Name: Steve Flatt Contact's Phone: 916-464-4584 COORDINATE SYSTEM DESCRIPTION Projection ALBERS Datum NAD83 Units METERS Spheroid GRS1980 Parameters: 1st standard parallel 34 0 0.000 2nd standard parallel 40 30 0.000 central meridian -120 0 0.00 latitude of projection's origin 0 0 0.000 false easting (meters) 0.00000 false northing (meters) -4000000.0000