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Land-Cover/Vegetation Layer Data Dictionary

California Gap Analysis Project

Table of Contents

Identification Information
Data Quality Information
Spatial Data Organization Information
Spatial Reference Information
Entity and Attribute Information
Distribution Information
Metadata Reference Information
Contact Information
Layer Contents


Data Set Identity: landcov

Originator: California Gap Analysis
Publication_Date: 19980630
Title: Land-cover for California
Geospatial_Data_Presentation_Form: map
Publication_Place: Santa Barbara, California
Publisher: Biogeography Lab, University of California, Santa Barbara
Online_Linkage: <http://www.biogeog.ucsb.edu/projects/gap/gap_data.html>


This layer is the land-cover/land use data compiled for the California Gap Analysis Project. It contains vegetation attributes for landscape scale map units, including canopy dominant species, canopy density, presence of regional endemic species, and inclusion of wetland habitats. Although polygons are classified into several schema (California Natural Diversity Data Base or "Holland" system, California Wildlife Habitat Relationships habitat types), data on presence of dominant canopy species are provided to allow customized classifications to meet a user's needs.

Supplemental Information: n/a

Data Set Status: in use

West Bounding Coordinate: -124.5048
East Bounding Coordinate: -114.2648
North Bounding Coordinate: 41.988
South Bounding Coordinate: 32.4234

Theme Keyword: Surface Vegetation, Land Cover, Habitat, Landuse

Browse Graphic File Name: landcov.gif
Browse Graphic File Description: Generalized color map of land cover types of California.
Browse Graphic File Type: GIF

Use Restrictions: n/a

Access Limitations:

There are no restrictions on access to this dataset. However, the data are subject to revision. To ensure that the user has the latest version, copies should only be obtained from the UCSB ftp or web site or from California Department of Fish and Game.

Native Data Set Environment:

ARC/INFO software version 7.0.3 running on IBM RS6000 with AIX 3.2.5

Raster File Format: n/a
Raster File Sensor: n/a
Vector File Format: ARCE7 (ARC/INFO Export format, version 7)
Nonspatial File Format: n/a


Attribute Accuracy: unknown

Attribute Accuracy Explanation:

Because source information ranged widely in date and reliability, the current database is uneven in both level of detail and accuracy. We did not have the resources to assess the statistical accuracy of the land-cover/vegetation map and associated database. However, we have appraised the product using less formal methods that have guided our use of the product.

The distribution of each dominant plant species in the coverage was compared to the documented distribution recorded in the CalFlora database which was derived from the Munz flora and revised with some more current data. Outlying locations of species in the GAP database were re-examined to either confirm that the location was documented in the data source or to change the species code if it appeared to be an incorrect interpretation or a data input error. A similar comparison was made for each community type with the written description in Holland, 1986.

Logical Consistency Report:

Each attribute label was confirmed to be a member of the set of valid values by comparing codes for species, community types and habitat types with a list of legitimate codes and names. Illegal codes were re-examined to identify the type of error and were corrected appropriately. Each map unit was tested with the ARC LABELERROR command to confirm that each has one and only one label. The proportion of cover types in each polygon was checked to sum to 100% (i.e., a code of 9).

Completeness Report:

At the landscape scale of mapping land-cover, it is not possible to include all vegetation and habitat features. The following guidelines were used in interpretating and generalizing the source data.

The minimum mapping unit is 100 ha for upland community types and 40 ha for wetland communities. To account for mosaics of communities below this resolution, each map unit was attributed with up to three community types, each of which had to be >10% of the map unit area. The spatial location of individual stands of vegetation therefore are not provided.

The classification was based on dominant overstory species. The minimum canopy closure criterion is 25%. Thus forest and woodland formations must have >25% tree cover, shrublands must have <25% tree cover and >25% shrub cover, and herbaceous types must have <25% trees, <25% shrubs, and >2% herbs.

Because the map is of actual, not potential, vegetation, the existing types were recorded even where there is evidence of recent disturbance. One exception is recently burned chaparral, which was typed as chaparral unless there was some strong evidence of type conversion.

Species must represent >20% of the canopy of the cover type in the map unit to be listed as a dominant species.

Some attributes are not completed for all map units. Wetland data and crown closure are only recorded if determined from aerial photos or other high resolution source. Data were not readily available for all map units and thus these fields may be blank (i.e., value of "0"). In the Mojave Desert region, species data were often indeterminate from TM imagery, and high resolution sources were unavailable. In many instances, therefore, only a community type is assigned to such map units, and the species data are blank. The project guidelines in effect when the Sonoran Desert and Southwestern California regions were being mapped only required primary and secondary types to be recorded. The tertiary type and species data in these two regions are always blank, except where modified in later revisions.

The attributes for developed and agricultural lands contain variable depth of detail, depending on the source information used. For example, in some areas, the community type was assigned to "Agricultural Land" of unknown uses. Where such lands were known to be either cropland or orchard/vineyard, they were so indicated. In a few sites, these may be further subdivided such as Irrigated Hayfield or Evergreen Orchard. Such distinctions are useful for modeling wildlife species distributions because the WHR database distinguishes the habitat suitability among these for different species. However, it should be noted that our classification is inconsistently applied, with greater detail in some places than others. It was decided that it was worth maintaining the most information possible at the expense of a consistent, but less detailed, classification.

Horizontal Positional Accuracy: n/a
Horizontal Positional Accuracy Explanation: n/a
Vertical Positional Accuracy: n/a
Vertical Positional Accuracy Explanation: n/a

Source Information:

This section begins with general methods used for the CA-GAP mapping of land cover, followed by details on regional sources. Polygon boundaries were derived from photointerpretation of 1990 Landsat Thematic Mapper digital images, supplemented by 1990 HAP photography and large scale vegetation maps. Attribute data came from the 1990 HAP photography, the 1930's VTM Survey Maps (i.e., Wieslander), field visits, and large scale vegetation maps.

Southwestern California sources: The sources described above were all used for this region, as well as the SANDAG MSCP land cover map, the Metropolitan Water District map of the San Diego Pipeline No. 6 study area, and a land cover map of Camp Pendleton Marine Corps Base.

Davis, F. W., P. A. Stine, D. M. Stoms, M. I. Borchert, and A. D. Hollander, 1995. Gap analysis of the actual vegetation of California: 1. The Southwestern Region. Madroño, 42: 40-78.

Sonoran Desert sources: The basic approach in delineating areas was to divide the desert region into rocky slopes, bajadas, and valley floors as viewed on 1990 TM images. An extensive field survey of the dominant perennial vegetation of the entire region was undertaken for determining the floristic information. Because of the extent of the area to be inventoried, the greatest coverage of the desert could be affected by using the major highways and other roads and tracks of the desert as transects. Approximately 10,000 miles of road were traveled and 86% of the map units were viewed.

Subsequent to the draft GAP land-cover map, the Bureau of Land Management and the California Department of Fish and Game conducted a joint effort to enhance the map with added detail for critical wildlife habitats in their Northern and Eastern Colorado Desert planning area (Dorweiler 1997). Sand dunes and dry lake beds were delineated from helicopter overflights using a global postioning system to determine geographic coordinates. Desert dry wash woodland was mapped independently in the southern portion through supervised classification of July, 1994, Landsat TM imagery after masking known areas of creosote scrub and mountains to reduce confusion of spectral signatures. Due to difficulties separating dry wash woodland in the northern part of the planning area, BLM used on-screen digitizing from orthophoto quads and hand drawn maps instead. Based on field work and examining aerial photos, some additional corrections in classification were made to the draft GAP map. The California GAP obtained a June, 1997, version of the BLM map and incorporated most of the modifications. Polygon boundaries were generalized and attributes adjusted as needed to be consistent with the database design philosophy and structure of the GAP land-cover map.

Gray, M. V., 1994. A Digital Multipurpose Vegetation Map for the Colorado Desert of California. Masters thesis, Department of Geography, University of California, Santa Barbara.

Mojave Desert sources: The Mojave Region vegetation database was developed using existing maps as baseline source data, including the East Mojave Resource Inventory from Southern California Edison, the BLM West Mojave map (Clark, personal communication), Edwards Air Force Base, and a BLM/USGS map derived from MSS imagery. Maps were updated and refined using Thematic Mapper satellite imagery, a current 1:150,000 road atlas (to identify areas of residential or industrial development), and extensive reconnaissance level field survey. The revisions made by the Bureau of Land Management for their Northern and Eastern Colorado Desert planning area (Dorweiler 1997) included a small part of the southern Mojave Desert region. The revisions were incorporated into the final GAP land-cover as described above for the Sonoran Desert region.

An accuracy check of a portion of the coverage was conducted using data obtained by the BLM during vegetation characterization studies in the east Mojave in 1975. Four hundred sixty-two transects were measured in this study and a listing of one to four visually dominant species for the stand in which each transect was placed was made. Each transect was not specifically georeferenced; however, its location was recorded to the resolution of a section (typically one square mile). A GIS coverage of all sections containing transects was overlain on the vegetation coverage and a listing of the cover types occurring within the sections was obtained. Visual dominant species were compared with Holland cover types for each section and if the dominant species could be cross referenced to any of the Holland cover types occurring within the section, the mapping was considered to be accurate. The accuracy check in the east Mojave subsampled 1.6% of the total regional land area. Overall accuracy was 84.0% for the subsample; however, accuracy among the eight cover types occurring on the transects varied between 65% and 100%.

Thomas, K. A., 1996. Vegetation and Floristic Diversity in the Mojave Desert of California: A Regional Conservation Evaluation. Ph.D. dissertation, University of California, Santa Barbara.

East of the Sierra Nevada sources: Landscapes on the eastern flank of the Sierra Nevada range south of Mono Lake were generalized from the 1980 Vegetation Resource Inventory (U. S. Forest Service, unpublished maps). The White-Inyo Mountains were generalized and labeled from the Landsat TM-based Inyo National Forest vegetation map. The floor of the Owens Valley was derived from the 1:24,000 scale BLM-SCS soil-vegetation mapping. The remaining areas were delineated subjectively by photointerpretation of patterns in the satellite imagery in conjunction with the CALVEG map (Parker and Matyas 1981), another BLM soil-vegetation map published in the Bodie/Coleville Grazing EIS for the Bodie and Antelope Valley areas, and the VTM maps.

Sierra Nevada sources: VTM maps and miscellaneous recent vegetation maps (notably the vegetation databases from the national forests and parks) were used. Where such maps were lacking we relied on USFS soil and vegetation survey notes (alpine and subalpine areas surveyed by R. Taskey), our own 1994/95 field reconnaissance surveys, forest patch type descriptions from the SNEP late seral old growth database, CALVEG, the Sequoia Mediated Settlement Agreement map of stands of Big-tree forest, and the map of foothill woodland types prepared by Pillsbury et al. (1991). Our draft map was extensively updated in timber-producing areas using USFS maps of timber plantations and shrub-dominated timberlands.

Davis, F. W., and D. M. Stoms, 1996. Sierran vegetation: A gap analysis. Pages 671-689 in Sierra Nevada Ecosystem Project: Final Report to Congress, vol. II, Assessments and scientific basis for management options. Davis: University of California, Centers for Water and Wildlands Resources.

Central Western California sources: Vegetation polygons were attributed using VTM data, maps of hardwood forests and woodlands (Pillsbury et al. 1991) and redwoods (Fox 1988), and field surveys. Air photo interpretation techniques were used to confirm, enhance, and in some cases where no other data were available, supply polygon attributes. National High Altitude Photography (NHAP) and NASA-JPL color infrared transparencies were viewed stereoscopically to identify vegetation types, percent coverage, canopy closure, and disturbance. The NHAP photos are at a scale of 1:58,000 and dated from 1980-1984, while the NASA-JPL photos are at a scale of 1:65,000 and dated late 1980s to early 1990s.

Northwestern California sources: Vegetation polygons were delineated in a first iteration from the CALVEG map (Parker and Matyas 1981) and Fox's (1988) map of redwoods. The polygons were attributed using a combination of VTM data, a map of hardwoods (Pillsbury et al. 1991), the map of redwoods (Fox 1988), field surveys by UCSB staff (562 polygons were checked in the field), and aerial photography. In addition, the GIS Potential Natural Vegetation coverage for the Six Rivers National Forest and GIS coverages of timber types for the Klamath and Shasta Trinity National Forests were used. Expert opinion was solicited from Forest Service botanists and ecologists.

Thorne, J. H., 1997. Gap Analysis: The vegetation of Northwestern California. Masters thesis, Department of Geography, University of California, Santa Barbara.

Great Valley sources: Initial landscape boundaries were derived from the USGS Digital Land Use and Land Cover maps (DLULC, USGS 1986) mapping. This base map was then edited subjectively by photointerpretation of patterns in the satellite imagery to improve registration of distinct edges and to account for recent and use changes. Wetlands were added from the 1:24,000 scale digital National Wetlands Inventory (NWI) maps from the U. S. Fish and Wildlife Service. The detailed map units of NWI, which were available in digital form only from Fresno northward at the time, were generalized into larger landscapes for GAP purposes. Other source maps for delineating landscapes include relic patches of native perennial bunchgrass prairie (Barry 1972 and redrawn by Dremann 1988); Carrizo Plain from the Bureau of Land Management, Bakersfield District; Southern San Joaquin Valley from the California Energy Commission (Anderson et al. 1991); and riparian forests (Nelson and Nelson 1984).

Cascade Ranges sources: Floristic information was derived mainly from our own field surveys plus digital maps from the Lassen, Modoc, Klamath, and Shasta National Forests. Some species information was also obtained from a recent hardwoods inventory (Pacific Meridian Resources, unpublished 1996), the Sierra Nevada Ecosystem Project's mapping of Late Successional-Old Growth Forests (Franklin et al. 1996), the land cover map of the Eagle Lake Resource Area of the BLM (version dated January, 1996), the 1996 land cover map jointly produced from 1990 TM imagery by the USFS and California Department of Forestry and Fire Protection, Soil-Vegetation maps from the USFS and State of California, and unpublished maps from the VTM survey (Wieslander 1946). Site visits to 232 landscape units were also used to resolve conflicts between sources or to verify older information.

Modoc Plateau sources: Sources of floristic information were the following: Soil Conservation Service 1:24,000 soil vegetation maps, which cover most of the private land. Vegetation Type Map (VTM survey maps; Wieslander 1946), which cover the southeast corner of the region. Detailed vegetation maps for Lava Beds National Monument contained in (Erhard 1979). Modoc National Forest vegetation map, which was produced in 1978 from aerial photographs. Bureau of Land Management range survey maps, covering the arid Surprise Valley area. BLM integrated management plan database, derived from a August 13, 1989, TM image centered on the Madeleine Plains. A preliminary version of the map was used, but then updates were made from the January, 1996 revision. Field reconnaissance in areas for which no existing vegetation map was available. Accessible roads through polygons were driven with numerous stops made to check vegetation, using binoculars and a 200x stereoscope from vantage points to survey areas distant from the road, and to identify conifers on nearby slopes and ridges.

Source Date:

TM imagery-1990, HAP photography-1985-1993, Wieslander VTM maps-1928-1945, other maps mostly from 1980-1995.

Source Distance Resolution (meters): 50

Process Description:

Landscape size map units were delineated on-screen over the TM imagery on the basis of relatively homogeneous color, tone, and texture. (For information on processing of the TM data, see TM metadata). In many cases, boundaries were added or moved based on higher resolution data from aerial photography or larger scale vegetation maps. Dominant species data were obtained from existing sources, primarily the VTM survey maps. Percent cover of the primary, secondary, and tertiary types were estimated from aerial photography. Crown cover was similarly estimated. Wetlands were recorded from aerial photography or direct field observation, or in some cases from detailed maps. Special species were noted from existing map sources or from field observation. Assignment of polygons to classes such as CNDDB communities was made by interpretation of the dominant plant species list associated with each map unit in a look-up table. These combinations of dominant species were also assigned to Wildlife-Habitat Relationships habitat types in collaboration with Barry Garrison, manager of the California Wildlife-Habitat Relationships Program. For further details, see:

Davis, F. W., P. A. Stine, D. M. Stoms, M. I. Borchert, and A. D. Hollander, 1995. Gap analysis of the actual vegetation of California: 1. The Southwestern Region. Madroño, 42: 40-78.

Davis, F. W., P. A. Stine, and D. M. Stoms, 1994. Distribution and conservation status of coastal sage scrub in southwestern California. Journal of Vegetation Science, 5: 743-756.

Stoms, D. M., F. W. Davis, P. A. Stine, and M. Borchert, 1992. Beyond the traditional vegetation map towards a biodiversity database, in Proceedings of GIS/LIS'92, San Jose, CA, November 10-12, 1992, pp. 718-726.


Native Data Structure: spatial vector

Raster File Row (Line) Count: n/a
Raster File Column (Sample) Count: n/a
Raster File Vertical (Band) Count: n/a
Raster File Number of Bytes per Pixel: n/a


Geographic Coordinate Units: Degrees, minutes and decimal seconds

Map Projection Name: Albers Conical Equal Area

Map Projection Description:

Projection ALBERS
Spheroid CLARKE1866

Distance Resolution (meters): 50

Altitude Resolution (meters): n/a


Attribute Labels:

Attribute Attribute description
REGION Jepson biophysical region of California
WHR1 Primary WHR habitat type
CROWN1 WHR canopy closure class of primary habitat type
WHR2 Secondary WHR habitat type
CROWN2 WHR canopy closure class of secondary habitat type
WHR3 Tertiary WHR habitat type
CROWN3 WHR canopy closure class of tertiary habitat type
WHRWET Presence or absence of 9 WHR wetland habitats
CNDDB1 California Natural Diversity Data Base ("Holland") natural communities classification code of primary type
PCT1 Proportion of polygon covered by primary cover type
CNDDB2 California Natural Diversity Data Base ("Holland") natural communities classification code of secondary type
PCT2 Proportion of polygon covered by secondary cover type
CNDDB3 California Natural Diversity Data Base ("Holland") natural communities classification code of tertiary type
PCT3 Proportion of polygon covered by tertiary cover type
SP1A Code for co-dominant species in cover type covering the largest fraction of the polygon (primary type)
SP1B Code for co-dominant species in primary cover type
SP1C Code for co-dominant species in primary cover type
SP2A Code for co-dominant species in cover type covering the second largest fraction of the polygon (secondary type)
SP2B Code for co-dominant species in secondary cover type
SP2C Code for co-dominant species in secondary cover type
SP3A Code for co-dominant species in cover type covering the third largest fraction of the polygon (tertiary type)
SP3B Code for co-dominant species in tertiary cover type
SP3C Code for co-dominant species in tertiary cover type
SPWA Code for most widespread canopy species in the wetland portion of the polygon
SPWB Code for second most widespread canopy species in the wetland portion of the polygon
SPWC Code for third most widespread canopy species in the wetland portion of the polygon
SPSA Code for a species of special concern either because it is narrowly endemic, threatened or endangered that is present in the polygon
SPSB Code for a species of special concern either because it is narrowly endemic, threatened or endangered that is present in the polygon

Attribute Definition Source:

Attribute Definition Source
Regions Hickman, 1993
Species names Hickman, 1993
CNDDB natural community types Holland, 1986 with additions from CA-GAP and land use types from Anderson et al., 1976 and Cowardin et al., 1979
WHR habitat types Mayer and Laudenslayer, 1988 amended by Interagency Working Task Group for WHR version 5.3 (Schultze, 1994)

Entity and Attribute Detail Citation:

Anderson, J. R., E. E. Hardy, J. T. Roach, and R. E. Witmer, 1976. A Land Use and Land Cover Classification System for Use with Remote Sensor Data. U. S. Geological Survey Professional Paper 964, Washington, DC, 28 pp.

Anderson, R. L., L. K. Spiegel, and K. M. Kakiba-Russell, 1991. Southern San Joaquin Valley Ecosystems Protection Program: Natural Lands Inventory and Maps. California Energy Commission, Sacramento, 41 pp. and six maps.

Barry, W. J., 1972. The Central Valley Prairie, v. 1. California prairie ecosystem. California Department of Parks and Recreation, Sacramento, 82 pp.

Cowardin, L. M., V. Carter, F. C. Golet, and E. T. LaRoe, 1979. Classification of Wetlands and Deepwater Habitats of the United States, FWS/OBS-79/31. USDI Fish and Wildlife Service, Washington, DC, 103 pp.

Davis, F. W., P. A. Stine, D. M. Stoms, M. I. Borchert, and A. D. Hollander, 1995. Gap analysis of the actual vegetation of California: 1. The Southwestern Region. Madroño, 42: 40-78.

Dorweiler, K. The development and verification of a habitat map using ARC/INFO GRID. Proceedings of the 17th Annual ESRI User Conference. Full text

Dremann, C. C., 1988. Prairie Relics in California: A Guidebook Based on Dr. James Barry's 1971 Survey and Maps. Redwood City Seed Company, Redwood City, CA, 37 pp.

Erhard, D. H., 1979. Plant Communities and Habitat Types in the Lava Beds National Monument, California. Masters Thesis, Oregon State University, Corvallis.

Fox, L. 1988. Classification, Map, and Volume Estimate for the Coast Redwood Forest of California. Report to the California Department of Forestry and Fire Protection. Humboldt State University, Arcata, CA, 37 pp.

Franklin, J. F., and J. A. Fites-Kaufmann, 1996. Assessment of late-successional forests of the Sierra Nevada. Pages 627-661 in Sierra Nevada Ecosystem Project: Final Report to Congress, vol. II, Assessments and scientific basis for management options. Davis: University of California, Centers for Water and Wildlands Resources.

Hickman, J. C. (ed.). 1993. The Jepson Manual of Higher Plants of California. University of California Press, Berkeley.

Holland, R. F., 1986. Preliminary descriptions of the terrestrial natural communities of California. State of California, The Resources Agency, Nongame Heritage Program, Dept. Fish & Game, Sacramento 156 pp.

Mayer, K. E., and W. F. Laudenslayer, Jr. 1988. A Guide to Wildlife Habitats of California. California Department of Forestry and Fire Protection, Sacramento, 166 pp.

Nelson, C. W., and J. R. Nelson, 1984. The Central Valley Riparian Mapping Project, in Warner, R. E. and K. M. Hendrix, eds, California Riparian Systems : Ecology, Conservation, and Productive Management. University of California Press, Berkeley, pp. 307-313.

Parker, I., and W. J. Matyas. 1981. CALVEG: A classification of Californian Vegetation. U.S. Dept. of Agriculture, U.S. Forest Service, Regional Ecology Group, San Francisco.

Pillsbury, N. H., M. J. DeLasaux, R. D. Pryor, and W. Bremer. 1991. Mapping and GIS Database Development for California's Hardwoods Resources. Prepared for the California Department of Forestry and Fire Protection, Sacramento.

Schultze, R. F., 1994. CWHR Agricultural Habitats. California Department of Fish and Game, Sacramento, CA.

U. S. Geological Survey, 1986. Land Use and Land Cover Digital Data from 1:250,000 and 1:100,000-scale Maps: Data Users Guide 4. U. S. Department of the Interior, USGS, Reston, VA. 36 pp.

Wieslander, A. E., 1946. Forest areas, timber volumes and vegetation types in California. California Forest and Range Experiment Station, Forest Survey Release No. 4., Berkeley, 66 pp.



    Dr. Frank Davis
    Department of Geography
    University of California
    Santa Barbara, CA 93106-4060

    phone: 805-893-3438
    fax: 805-893-3146
    ftp address: ftp://ftp.biogeog.ucsb.edu/pub/org/biogeog/data/gap_analysis
    URL: http://www.biogeog.ucsb.edu/projects/gap/gap_data.html

Distribution Liability:

The University of California assumes no responsibility for application of the data beyond their original intent.

Standard Order Process:

Data are available through anonymous ftp and the World Wide Web at the ftp address and URL address listed under Distributor.

File Decompression Technique:

ARC/INFO export file (ARCE7) with NONE compression option. Export file then compress with gzip.

Transfer Size: 24.6 Mb in gzip compressed format; 109.3 Mb uncompressed


Metadata Date: 11/05/98
Metadata Standard Name: Metadata Standards for Gap Analysis
Metadata Standard Name: 09/05/1994
Metadata Review Date: n/a
Metadata Contact:

    Dr. David Stoms
    phone: 805-893-7655
    fax: 805-893-3146


Contact Person Primary: Dr. David Stoms
Contact Mail Address:

    Department of Geography
    University of California
    Santa Barbara, CA 93106-4060

Contact Voice Telephone: (805) 893-7655
Contact Facsimile Telephone: (805) 893-3146
Contact Electronic Mail Address:


INFO Table Schemas

Polygon attribute table
Species lookup table
CNDDB community lookup table
WHR habitat lookup table

INFO Codes

Region names
Species names
Percent classes
Crown cover classes
WHR wetland classes
CNDDB community names (and descriptions)
WHR habitat names

LANDCOV.PAT- Polygon attribute table:

Start column Attribute Attribute parameters Attribute description
17 REGION 3 3 C - Jepson region abbreviation
20 WHR1 3 3 C - Primary WHR habitat type
23 CROWN1 1 1 I - WHR canopy closure class of primary habitat type
24 WHR2 3 3 C - Secondary WHR habitat type
27 CROWN2 1 1 I - WHR canopy closure class of secondary habitat type
28 WHR3 3 3 C - Tertiary WHR habitat type
31 CROWN3 1 1 I - WHR canopy closure class of tertiary habitat type
32 WHRWET 9 9 I - Presence or absence of 9 WHR wetland habitats
41 CNDDB1 5 5 C - CNDDB natural communities classification code of primary type (Holland, 1986)
46 PCT1 1 1 I - Proportion of polygon covered by primary cover type
47 CNDDB2 5 5 C - CNDDB natural communities classification code of secondary type (Holland, 1986)
52 PCT2 1 1 I - Proportion of polygon covered by secondary cover type
53 CNDDB3 5 5 C - CNDDB natural communities classification code of tertiary type (Holland, 1986)
58 PCT3 1 1 I - Proportion of polygon covered by tertiary cover type
59 SP1A 5 5 I - Co-dominant species in cover type covering the largest fraction of the polygon (primary type)
64 SP1B 5 5 I - Co-dominant species in primary cover type
69 SP1C 5 5 I - Co-dominant species in primary cover type
74 SP2A 5 5 I - Co-dominant species in cover type covering the second largest fraction of the polygon (secondary type)
79 SP2B 5 5 I - Co-dominant species in secondary cover type
84 SP2C 5 5 I - Co-dominant species in secondary cover type
89 SP3A 5 5 I - Co-dominant species in cover type covering the third largest fraction of the polygon (tertiary type)
94 SP3B 5 5 I - Co-dominant species in tertiary cover type
99 SP3C 5 5 I - Co-dominant species in tertiary cover type
104 SPWA 5 5 I - Most widespread canopy species in the wetland portion of the polygon
109 SPWB 5 5 I - Second most widespread canopy species in the wetland portion of the polygon
114 SPWC 5 5 I - Third most widespread canopy species in the wetland portion of the polygon
119 SPSA 5 5 I - Presence of a species of special concern either because it is narrowly endemic, threatened or endangered
124 SPSB 5 5 I - Presence of a species of special concern either because it is narrowly endemic, threatened or endangered

Lookup Tables - Filename: LANDCOV.SPECIES:

Start column Attribute Attribute parameters Attribute description
1 SPECIES 5 5 I - Code for plant species
6 COMNAME 50 50 C - Common name of plant species
56 SCINAME 50 50 C - Scientific name of plant species (based on Jepson Flora of California, Hickman, 1993)
Redefined Items
1 SP1A 5 5 I -
1 SP1B 5 5 I -
1 SP1C 5 5 I -
1 SP2A 5 5 I -
1 SP2B 5 5 I -
1 SP2C 5 5 I -
1 SP3A 5 5 I -
1 SP3B 5 5 I -
1 SP3C 5 5 I -
1 SPWA 5 5 I -
1 SPWB 5 5 I -
1 SPWC 5 5 I -
1 SPSA 5 5 I -
1 SPSB 5 5 I -

Lookup Tables - Filename: LANDCOV.CNDDBNAMES:

Start column Attribute Attribute parameters Attribute description
1 CNDDB 5 5 C - Code for CNDDB Natural Community (Holland, 1986)
6 CNDDBNAME 50 50 C - Name of CNDDB Natural Community (Holland, 1986)
Redefined Items
1 CNDDB1 5 5 C - Code for primary CNDDB type (Holland, 1986)
1 CNDDB2 5 5 C - Code for secondary CNDDB type (Holland, 1986)
1 CNDDB3 5 5 C - Code for tertiary CNDDB type (Holland, 1986)

Lookup Tables - Filename: LANDCOV.WHRTYPES:

Start column Attribute Attribute parameters Attribute description
1 WHR 3 3 C - Code for WHR habitat type (Mayer and Laudenslayer, 1988)
4 WHRTYPE 40 40 C - WHR habitat type name (Mayer and Laudenslayer, 1988)
Redefined Items
1 WHR1 3 3 C - Code for primary WHR type (Mayer and Laudenslayer, 1988)
1 WHR2 3 3 C - Code for secondary WHR type (Mayer and Laudenslayer, 1988)
1 WHR3 3 3 C - Code for tertiary WHR type (Mayer and Laudenslayer, 1988)

INFO Items:


REGION Region Name
CAS Cascade Ranges
CW Central Western California
ESN East of the Sierra Nevada
GV Great Central Valley
MOD Modoc Plateau
MOJ Mojave Desert
NW Northwestern California
SN Sierra Nevada
SON Sonoran Desert
SW Southwestern California


NON-NATIVE VEGETATION______________________________________________

11100 Residential
11200 Commercial and services
11300 Industrial
11400 Transportation and Utilities
11500 Industrial and Commercial Complexes
11600 Mixed Urban
11700 Other Urban
22100 Cropland and Pasture
22101 Irrigated row and field crops
22102 Irrigated hayfield
22104 Dryland grain crops
22105 Rice fields
22106 Pasture
22200 Orchards, Vineyards, Nurseries
22201 Evergreen orchard
22202 Deciduous orchard
22203 Vineyard
22300 Confined Feeding Operations
22400 Other Agricultural Land
22500 Great Basin pasture/grainfield with remnant bottomlands, irrigated, and/or in seepage/highwater table areas (i.e. semiwetlands and wetlands) Poa pratensis, Agropyron desertorum, Elyrigia repens, Phalaris arundinacea, Carex caespitosa nebracsencsis, Deschampsia Leymus cinereus, Hordeum jubatum, Hordeum brachyanherum, Muhlenbergia asperifolia
22600 Great Basin dry farmed grain/rural pasture (Unirrigated, or irrigated once per year) Agropyron desertorum, Elyrigia epens, Bromus tectorum, Elymus elymoides
22700 Reclaimed Lakebed/Waterfowl mgmt/ag. Scirpus acutus, Scirpus spp., Typha spp., Urtica dioica ssp. holosericea, Phalaris arundinacea, and cultivated grains
42915 Mid-elevation plantations (most likely Ponderosa pine)
42951 Upper-elevation plantations (most likely Red fir)
55100 Streams and canals
55200 Lakes
55210 Intermittent lake
55300 Reservoirs
55310 Intermittent reservoir
55400 Bays and estuaries
77100 Dry Salt Flats
77200 Beaches
77300 Sandy areas other than beaches
77400 Bare exposed rock
77401 Bare exposed lava
77500 Quarries, and gravel pits
77600 Transitional bare areas
77700 Mixed barren land
77701 Badlands
78000 Mud Flats
99100 Perennial snowfields
99200 Glaciers


31001 Non-native annual grassland Avena spp., Bromus spp., etc.
31002 Native perennial grassland Stipa spp., Elymus spp., etc.
31003 Estuarine emergent wetland Salicornia virginica, Suaeda californica, etc.
31004 Coastal dune perennials Abronia latifolia, Spartina foliosa, etc.
31005 Wet meadow Sedge - Rush Juncus spp., Eleocharis spp.,etc.
31007 Freshwater Sedge - Rush marsh Carex spp., Juncus, spp.,
31008 Freshwater Sedge-Cat-tail marsh Typha spp., Carex spp., etc.
31010 Wild Mustard Brassica ssp.
31011 Giant Reed Arundo donax
31012 Saltgrass Distichlis spicata
31013 Galleta Pleuraphis rigida (formerly Hilaria rigida)
31014 Ice plant Mesembryanthemum spp.
31015 California poppy Eschscholtzia californica
31016 Great Basin annual grasses Bromus tectorum, Taeniantherum caput-medusae, Descurainia sophia, Poa bulbosa, Agropyron desertorum, Elyrigia repens, Elymus lanceolatus, etc.
31017 Great Basin bunchgrass vegetation Bromus tectorum, Festuca idahoensis, Psuedoroegneria spicata, Poa secunda, Achnatherum lettermanii, Hesperostipa comata, Achnatherum speciosum, Achnatherum occidentalis, Achnatherum thurberiana, Elymus cinereus, Pleuraphis jamesii, Bromus carinatus var. carinatus, Archnatherum hymenoides (1-4 species most prevalent)
31018 Great Basin Alkali sink grasses Leymus cinereus, Bromus tectorum, Distichlis spicata (locally dominant), Poa nevadensis, Elymus elymoides
31019 Indian ricegrass Achnatherum hymenoides
31020 Pampas grass Cortaderia jubata
31021 Bulrush Scirpus robustus
31022 Rush Juncus balticus
31023 Foxtail barley Hordeum jubatum
Nitrophila occidentalis
31025 Mules ears Wyethia mollis
31026 Cheatgrass (exotic) Bromus tectorum
31027 Reed canary grass (exotic) Phalaris arundinacea
31028 Medusaehead (exotic) Taeniantherum caput-medusae
31029 Japanese brome (exotic) Bromus japonicus
31030 Needlegrass Achnatherum lemmonii
31031 One-spike oatgrass Danthonia unispicata
31032 Wood strawberry Fragaria vesca
31033 Balsam root Balsamorhiza sagittata
31035 Sandberg's bluegrass Poa secunda
31036 Western needlegrass Achnatherum occidentalis
Erodium circutarium
31038 Russian thistle or tumbleweed Salsola tragus (formerly S. kali)
31039 Corn lily Veratrum californicum
31042 Alkali sacaton Sporobolus airoides
Carex nebrascensis
31044 Desert dandelion Malacothrix glabrata
31045 Apricot mallow Sphaeralcea ambigua
31046 Braken Pteridium aquilinum
31047 Purple needlegrass Nassella pulchra (formerly Stipa pulchra)
31048 Arizona three-awn Aristida hamulosa
31049 Ruderal spp.
31050 California wild grape Vitis californica
31051 Water smartweed Polygonum amphibium
31052 Star thistle Centaurea spp.
31054 Pitcher plant bogs Darlingtonia bogs
31055 European beachgrass Ammophila arenaria
Erharta calycina
31057 Sphagnum bog species Menyanthes trifoliata, Carex limosa, Sphagnum squarrosum
31058 Northern basalt vernal pool spp.
31059 Great Basin wet meadow spp. Carex nebrascensis, Carex spp., Deschampsia caespitosa, Juncus spp., Phalaris arundinacea
31060 Northern hardpan vernal pool spp.
31061 Northern claypan vernal pool spp.
31062 Misc. vernal pool spp.

CHAPARRAL SHRUBS___________________________________________________

32000 Unidentified chaparral shrubs
32001 Chamise Adenostoma fasciculatum
32002 Tobacco brush Ceanothus velutinus
32003 Buckbrush Ceanothus cuneatus
32004 Greenleaf manzanita Arctostaphylos patula
32005 Coyote brush Baccharis pilularis
32006 Bush chinquapin Chrysolepis sempervirens (formerly Castanopsis sempervirens)
32007 Rhododendron Rhododendron macrophyllum
32008 Santa Cruz manzanita Arctostaphylos andersonii
32009 Monkshood Aconitum columbianum
32010 Currant Ribes velutinum
32011 Mountain mahogany Cercocarpus betuloides
32012 Bush lupine Lupinus chamissonis
Lupinus albifrons
32014 California blackberry Rubus ursinus
32015 Blue elderberry Sambucus mexicana
Lupinus albicaulus
32017 Deerbrush Ceanothus integerrimus
32018 Mountain whitethorn Ceanothus cordulatus
32019 Snowdrop bush Styrax officinalis
32020 Mountain misery Chamaebatia foliolosa
32021 Poison oak Toxicodendron diversilobum
32022 Yellow bush lupine Lupinus arboreus
32023 Salal Gaultheria shallon
Eriodictyon tomentosum
32026 Redshanks Adenostoma sparsifolium
32027 Eastwood manzanita Arctostaphylos glandulosa
32028 Bigberry manzanita Arctostaphylos glauca
32029 Serpentine manzanita Arctostaphylos obispoensis
32030 Parry manzanita Arctostaphylos parryana
32031 Purisima manzanita Arctostaphylos purissima
32032 Woollyleaf manzanita Arctostaphylos tomentosa
32033 Mule fat Baccharis salicifolia (formerly B. viminea)
32034 Hoaryleaf ceanothus Ceanothus crassifolius
32035 Desert ceanothus Ceanothus greggii
32036 Chaparral whitethorn Ceanothus leucodermis
32037 Bigpod ceanothus Ceanothus megacarpus
32038 Hairy ceanothus Ceanothus oliganthus
32039 Palmer ceanothus Ceanothus palmeri
32040 Wartleaf ceanothus Ceanothus papillosus
32041 Squaw carpet Ceanothus prostratus
32042 Jimbrush Ceanothus oliganthus var. sorediatus (formerly Ceanothus sorediatus)
32043 Greenbark ceanothus Ceanothus spinosus
32044 Wartystem ceanothus Ceanothus verrucosus
32045 Virgin's bower Clematis ligusticifolia
32046 Bush poppy Dendromecon rigida
32047 Yerba santa Eriodictyon californicum
32048 Thick leafed yerba santa Eriodictyon crassifolium
32049 Fremontia or Flannel bush Fremontodendron californicum
32050 Pale silktassel Garrya flavescens
32051 Fremont silktassel Garrya fremontii
32052 Veatch silktassel Garrya veatchii
32053 Ocean spray or Cream bush Holodiscus discolor
32054 Cream bush Holodiscus microphyllus
32055 Refugio manzanita Arctostaphylos refugioensis
32056 Granite gilia Leptodactylon pungens
32058 Southern honeysuckle Lonicera subspicata
32059 Chaparral Pea Pickeringia montana
32060 Western choke cherry Prunus virginiana
32061 Leather oak Quercus durata
32062 Lemonade berry Rhus integrifolia
32063 Laurel sumac Malosma laurina (formerly Rhus laurina)
32064 Our lord's candle Yucca whipplei
32065 Canyon live oak (Shrub form) Quercus chrysolepis
32068 Interior live oak (Shrub form) Quercus wislizenii
32069 Mexican manzanita Arctostaphylos pungens
Xylococcus bicolor
32071 Woolyleaf ceanothus Ceanothus tomentosus
Ceanothus incanus
32073 Desert scrub oak Quercus cornelius-mullerii
32074 Sugarbush Rhus ovata
32075 Pink-bracted manzanita Arctostaphylos pringlei
32076 Toyon Heteromeles arbutifolia
32077 Coffeeberry Rhamnus californica
32078 Flowering ash Fraxinus dipetala
32079 Prickly pear Opuntia littoralis
32080 Hollyleaf cherry Prunus illicifolia
32081 Snowberry Symphoricarpos mollis
32082 Bitter cherry (Shrub form) Prunus emarginata
32083 Giant coreopsis Coreopsis gigantea
Eriodictyon trichocalyx
Mimulus aurantiacus
Ceanothus impressus
32089 Ione manzanita Arctostaphylos myrtifolia
32090 Lompoc yerba santa Eriodictyon capitatum
32091 Peak rush-rose Helianthemum scoparium
32092 Sulfur flower Eriogonum umbellatum
32094 Scrub oak Quercus berberidifolia, and other scrub oak species
32095 Ceanothus Ceanothus spp.
32096 California broom Lotus scoparius
32098 Prickly flox Leptodactylon californicum
Keckiella cordifolia (formerly Penstemon cordifilus)

GREAT BASIN SHRUBS_________________________________________________

32101 Antelope bush Purshia tridentata
32102 Rabbitbrush Chrysothamnus nauseosus
32103 Great basin sagebrush Artemisia tridentata
32104 Low sagebrush Artemisia arbuscula
32105 Saltbush Atriplex spp.
32106 Mountain mahogany Cercocarpus ledifolius
32108 Silver sagebrush Artemisia cana
32109 Tarragon Artemisia dracunculus
32110 Black sagebrush Artemisia nova
32111 Rothrock sagebrush Artemisia rothrockii
32112 Bud sagebrush Artemisia spinescens
32113 Four-wing saltbush Atriplex canescens
32114 Desert holly Atriplex hymenolytra
32115 Lenscale Atriplex lentiformis
32116 Saltbush Atriplex parryi
32117 Allscale saltbush Atriplex polycarpa
32118 Rabbitbrush Chrysothamnus parryi
32119 Rabbitbrush Chrysothamnus viscidiflorus
32120 Brittlebush Encelia farinosa
32121 Mormon tea Ephedra nevadensis
32122 Green ephedra Ephedra viridis
32123 Hopsage Grayia spinosa
32124 Broom snakeweed Gutierrezia sarothrae
32125 California matchweed Gutierrezia californica
32127 Narrowleaf goldenbush Ericameria linearifolius (formerly Haplopappus linearifolius)
32128 White burrobush Hymenoclea salsola
32131 Scalebroom Lepidospartum squamatum
32133 Desert almond Prunus fasciculata
32135 Greasewood Sarcobatus vermiculatus
32136 Mohave yucca Yucca schidigera
32137 Desert almond Prunus fremontii
Forestiera neomexicana
32139 Ericameria Ericameria spp. (formerly Haploppapus spp.)
32140 California ephedra Ephedra californica
32143 Desert lavender Hyptis emoryi
32144 Triangle leaf Atriplex phyllostegia
Menodora spinescens (formerly M. spinosa)
Tetradymia axillaris
32149 Bladderpod Isomeris arborea
Suaeda moquinii (formerly S. torreyana)
32151 Regeneration shrubs Artemisia tridentata, Chrysothamnus spp. Purshia tridentata, Wyethia mollis

DESERT SHRUBS______________________________________________________

32200 Unidentified desert shrubs
32201 Creosote Larrea tridentata
32203 Buckwheat spp. Eriogonum spp.
32202 Arroweed Pluchea sericea
32204 Jumping cholla Opuntia biglovii
32206 Ocotillo Fouquieria splendens
32207 Shadscale Atriplex confertifolia
32208 Blackbush Coleogyne ramosissima
32209 Iodine bush Allenrolfea occidentalis
32210 Burro-weed Ambrosia dumosa
32212 Pencil cactus Opuntia ramosissima
Agave deserti
Fagonia californica
Psorothamnus emoryi (formerly Dalea emoryi)
Caesalpina virgata (formerly Hoffmansegia micropylla)
32217 Golden cholla Opuntia echinocarpa
32218 Buckhorn cholla Opuntia acanthocarpa
32219 Barrel cactus Ferocactus cylindraceus (formerly F. acanthodes)
32220 Tucker's Oak Quercus john-tuckeri
32221 Crucifixion Thorn Castela emoryi
32222 Jojoba Simmondsia chinensis
32223 Winterfat Krascheninnikovia lanata (formerly Eurotia lanata)
32224 Cooper's goldenbrush Ericameria cooperi
32225 Desert wild grape Vitus girdiana
32226 Mixed succulents Opuntia spp., Ferocactus spp., Echinocereus spp.
Nolina parryi
Psorothamnus arborescens (formerly P. fremontii)
Psorothamnus polydenius

COASTAL SCRUB SHRUBS_______________________________________________

32301 California buckwheat Eriogonum fasciculatum
32302 California sagebrush Artemisia californica
32303 California encelia Encelia californica
32305 White sage Salvia apiana
32306 Purple sage Salvia leucophylla
32307 Black sage Salvia mellifera
32309 Ashyleaf buckwheat Eriogonum cinerium
32310 Wright buckwheat Eriogonum wrightii
32311 Heather goldenbush Ericameria ericoides (formerly Haplopappus ericoides)
32316 Redberry buckthorn Rhamnus crocea
32317 Gray horsebrush Tetradymia canescens
32318 Pitcher sage Salvia spathecea
Hazardia squarrosa
32321 Grape soda lupine Lupinus excubitus
Eriophyllum staechadifolium
Lupinus spp.
Eriogonum fasciculatum var. polifolium
Eriogonum fasciculatum var. fasciculatum
Isocoma menziesii var. vernioides (formerly Haplopappus venetus)
32327 Cascara Rhamnus purshiana
Craetaegus douglasii

MONTANE SHRUBS_____________________________________________________

32401 Seviceberry Amelanchier utahensis (formerly pallida)
32402 Manzanita Arctostaphylos auriculata
32403 Hoary manzanita Arctostaphylos canescens
32404 Common manzanita Arctostaphylos manzanita
32405 Mariposa manzanita Arctostaphylos viscida var. mariposa (formerly Arctostaphylos mariposa)
32406 Indian manzanita Arctostaphylos mewukka
32407 Pinemat manzanita Arctostaphylos nevadensis
32408 Eldorado manzanita Arctostaphylos nissenana
32409 Littleberry manzanita Arctostaphylos nummularia
32410 La panza manzanita Arctostaphylos pilosula
32412 Shagbark manzanita Arctostaphylos rudis
32414 Whiteleaf manzanita Arctostaphylos viscida var. viscida (formerly Arctostaphylos viscida)
32415 Barbarry Berberis nervosa
32416 Cropleaf ceanothus Ceanothus dentatus
32417 Muskbrush Ceanothus jepsonii
32420 Littleleaf ceanothus Ceanothus parvifolius
32421 Monterey ceanothus Ceanothus cuneatus var. rigidus (formerly Ceanothus rigidus)
32422 Bluebrush, Wild lilac Ceanothus thyrsiflorus
32423 Western redbud Cercis occidentalis
32424 Hazelnut Corylus cornuta
32425 Scotchbroom Cytisus scoparius
32428 Huckleberry oak Quercus vaccinifolia
32429 Snowberry Symphoricarpos rotundifolius (formerly vaccinoides)
32430 Huckleberry Vaccinium ovatum
32431 Squaw or wax currant Ribes cereum
Polygonum davisiae
32433 Oregon oak (shrub form) Quercus garryana var. breweri
32434 Goldenfleece Ericameria arborescens
32435 Silktassel Garrya elliptica
32438 Flat-topped buckwheat Eriogonum deflexum
32441 Sticky currant Ribes viscossimum
32442 Sierra gooseberry Ribes roezlii
32443 American dogwood Cornus sericea ssp. sericea (formerly Cornus stolonifera)
32444 Western azalea Rhododendron occidentalis
32445 Alpine cushion plants Misc alpine shrubs
32446 Pecho manzanita Arctostaphylos pechoensis
32447 Morro manzanita Arctostaphylos morroensis
32448 Elderberry spp. Sambucus spp.
32449 Red elderberry Sambucus racemosa
32450 Vine maple Acer circinatum
32451 Manzanita spp. Arctostaphylos spp.
32452 Boxleaf silktassel Garrya buxifolia
32453 Swordfern Polystichum munitum
32454 Beargrass Xerophyllum tanex
32455 Saddler's oak Quercus sadleriana
32456 Hairy manzanita Arctostaphylos columbiana
32457 Thimbleberry Rubus parviflorus

OTHER SHRUBS_______________________________________________________

32501 Skunkbrush Rhus trilobata
32502 Goldenbush Ericameria bloomeri (formerly Happlopappus b. and Chrysothamnus b.)
32503 Wood rose Rosa gymnocarpa
32504 Fern bush, desert sweet Chamaebatiaria millefolium
32507 Desert sage Salvia dorrii
Ribes aureum
32510 Desert peach Prunus andersonii
Ribes spp.

HARDWOOD TREES_____________________________________________________

41001 Black oak Quercus kelloggii
41002 Blue oak Quercus douglasii
41003 Canyon live oak Quercus chrysolepis
41004 Coast live oak Quercus agrifolia
41005 Interior live oak Quercus wislizenii
41006 Oregon oak Quercus garryana
41007 Madrone Arbutus menziesii
41008 Red alder Alnus rubra
41009 Quaking aspen Populus tremuloides
41010 Black cottonwood Populus balsamifera ssp. trichocarpa (formerly Populus trichocarpa)
41011 California bay Umbellularia californica
41012 Fremont cottonwood Populus fremontii
41013 Valley oak Quercus lobata
41014 White alder Alnus rhombifolia
41015 Willow Salix spp.
41016 Catclaw Acacia greggii
41017 Desert ironwood Olneya tesota
41018 Joshua tree Yucca brevifolia
41019 Mesquite Prosopis glandulosa
41020 Fan palm Washingtonia filifera
41021 Palo verde Cercidium floridum
41022 Smoke tree Psorothamnus spinosa (formerly Dalea spinosa)
41023 Tamarisk Tamarix spp.
41026 Buckeye Aesculus californica
41027 Engelmann oak Quercus engelmannii
41029 Sycamore Platanus racemosa
41030 Eucalyptus Eucalyptus spp.
41032 California walnut Juglans californica var. californica (formerly Juglans californica)
41033 Box elder Acer negundo
41036 Golden chinquapin Chrysolepis chrysophylla (formerly Castanopsis chrysophylla)
41037 Desert willow Chilopsis linearis
41040 Oregon ash Fraxinus latifolia
41043 California black walnut Juglans californica var. hindsii (formerly Juglans hindsii)
41044 Tanoak Lithocarpus densiflorus
41045 Tree tobacco Nicotiana glauca
41049 Bitter cherry Prunus emarginata
41050 Bigleaf maple Acer macrophyllum
41051 Screwbean Prosopis pubescens
41052 Mountain alder Alnus incana var. tenuifolia (formerly Alnus tenuifolia)
41053 Mountain maple Acer glabrum
41054 Water Birch Betula occidentalis
Quercus alvordiana
41056 California wax myrtle Myrica californica
41057 Pacific dogwood Cornus nuttallii
41059 Tree of heaven Ailanthus altissima
41060 Black locust Robinia pseudoacacia

CONIFER TREES______________________________________________________

42003 Coast redwood Sequoia sempervirens
42005 Douglas fir Pseudotsuga menziesii
42006 Grand fir Abies grandis
42007 Bigcone spruce Pseudotsuga macrocarpa
42009 Sitka spruce Picea sitchensis
42010 Bishop pine Pinus muricata
42011 Foxtail pine Pinus balfouriana
42012 Jeffrey pine Pinus jeffreyi
42013 Knobcone pine Pinus attenuata
42014 Lodgepole pine Pinus contorta var. murrayana
42015 Ponderosa pine Pinus ponderosa
42016 MacNab cypress Cupressus macnabiana
42017 Mountain hemlock Tsuga mertensiana
42018 Baker cypress Cupressus bakeri
42019 California juniper Juniperus californica
42022 White fir Abies concolor
42026 Whitebark pine Pinus albicaulis
42027 Giant sequoia Sequoiadendron giganteum
42028 Bristlecone pine Pinus longaeva (formerly Pinus aristata)
42029 Limber pine Pinus flexilis
42030 Single leaf pinyon Pinus monophylla
42031 Western white pine Pinus monticola
42032 Piute cypress Cupressus arizonica ssp. nevadensis
42033 Bristlecone fir Abies bracteata
42034 Coulter pine Pinus coulteri
42035 Monterey pine Pinus radiata
42036 Gowen cypress Cupressus goveniana
42037 Monterey cypress Cupressus macrocarpa
42039 Sargent cypress Cupressus sargentii
42040 Torrey pine Pinus torreyana
42041 Cuyamaca cypress Cupressus arizonica ssp. arizonica (formerly C. stephensonii)
42042 Tecate cypress Cupressus forbesii
42043 Brewer spruce Picea breweriana
42044 Foothill pine Pinus sabiniana
42045 Incense cedar Calocedrus decurrens (formerly Libocedrus decurrens)
42046 Noble fir Abies procera
42048 Pacific yew Taxus brevifolia
42049 Parry pinyon Pinus quadrifolia
42050 Port Orford cedar Cupressus lawsoniana (formerly Chamaecyparis lawsoniana)
42051 Red fir Abies magnifica
42052 Subalpine fir Abies lasiocarpa
42053 Sugar pine Pinus lambertiana
42054 Utah juniper Juniperus osteosperma
42055 Western juniper Juniperus occidentalis
42057 Washoe Pine Pinus washoensis
42058 Western hemlock Tsuga heterophylla
42059 Shore pine Pinus contorta var. contorta
42061 Pygmy cypress Cupressus goveniana ssp. pigmaea
42062 Western red cedar Thuja plicata
42063 Sierra juniper Juniperus occidentalis australis


Only classes 4-9 should occur for primary cover type. PCT1 + PCT2 + PCT3 should sum to 9.

PCT1/2/3 Description
1 10-20 %
2 20-30 %
3 30-40 %
4 40-50 %
5 50-60 %
6 60-70 %
7 70-80 %
8 80-90 %
9 90-100 %


Forest or Shrubland

CROWN1/2/3 Description
1 10-24 % cover
2 25-39 %
3 40-59 %
4 60-100 %

Herbaceous or Desert

CROWN1/2/3 Description
1 2-9 %
2 10-39 %
3 40-59 %
4 60-100 %


There are nine types, recorded in the nine columns of this item. The columns correspond to the following WHR wetland habitat types:

Column WHR Wetland Type
1 Montane Riparian (MRI)
2 Valley-Foothill Riparian (VRI)
3 Desert Riparian (DRI)
4 Wet Meadow (WTM)
5 Freshwater Emergent Wetland (FEW)
6 Saline Emergent Wetland (SEW)
7 Riverine (RIV)
8 Lacustrine (LAC)
9 Estuarine (EST)


Wetland Codes

Code Description
0 no data available
1 wetland type is absent
2 wetland type is present


COVER TYPES AND THEIR DESCRIPTIONS: Numerical Listing Alphabetical Listing


WHR1/2/3 WHR Habitat Type
ADS Alpine-Dwarf Shrub
AGS Annual Grassland
ASC Alkali Desert Scrub
ASP Aspen
BAR Barren
BBR Bitterbrush
BOP Blue Oak-Foothill Pine
BOW Blue Oak Woodland
COW Coastal Oak Woodland
CPC Closed-Cone Pine-Cypress
CRC Chamise-Redshank Chaparral
CRP Cropland
CSC Coastal Scrub
DFR Douglas-Fir
DGR Dryland Grain Crops
DOR Deciduous Orchard
DRI Desert Riparian
DSC Desert Scrub
DSS Desert Succulent Shrub
DSW Desert Wash
EOR Evergreen Orchard
EPN Eastside Pine
EST Estuarine
EUC Eucalyptus
FEW Freshwater Emergent Wetland
IGR Irrigated Grain Crops
IRF Irrigated Row and Field Crops
IRH Irrigated Hayfield
JPN Jeffrey Pine
JST Joshua Tree
JUN Juniper
KMC Klamath Mixed Conifer
LAC Lacustrine
LPN Lodgepole Pine
LSG Low Sage
MCH Mixed Chaparral
MCP Montane Chaparral
MHC Montane Hardwood-Conifer
MHW Montane Hardwood
MRI Montane Riparian
OVN Orchard and Vineyard
PAS Pasture
PGS Perennial Grassland
PJN Pinyon-Juniper
POS Palm Oasis
PPN Ponderosa Pine
RDW Redwood
RFR Red Fir
RIC Rice
RIV Riverine
SCN Subalpine Conifer
SEW Saline Emergent Wetland
SGB Sagebrush
SMC Sierran Mixed Conifer
URB Urban
VIN Vineyard
VOW Valley Oak Woodland
VRI Valley-Foothill Riparian
WFR White Fir
WTM Wet Meadow
XXX No secondary or tertiary WHR type