Vegetation - Great Valley Ecoregion [ds2632]

SDE Feature Class

Open this dataset in BIOS
Download this dataset

Tags
Great Valley Ecoregion, Sacramento Valley, Central Valley Riparian, Sacramento River, San Joaquin River, Kings River, Alameda County, Amador County, Butte County, Calaveras County, Colusa County, Contra Costa County, Fresno County, Glenn County, Kern county, Kings County, Madera County, Mariposa County, Merced County, Placer County, Sacramento County, San Benito County, San Joaquin County, San Luis Obispo County, Shasta County, Solano County, Stanislaus County, Sutter County, Tehama County, Tulare County, Tuolumne County, Yolo County, Yuba County, vegetation mapping, alliance level


Summary

This dataset was produced to facilitate regional planning, conservation, and enhancement of biological resources by state agencies, project partners and regional stakeholders.

Description

Geodatabase feature class containing a map of vegetation within the Great Valley Ecoregion produced by the Geographical Information Center (GIC) at CSU Chico. 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. 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% and users accuracy of 89%. 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).

Credits

Geographic Information Center, Chico Research Foundation

Use limitations

DFW appreciates learning how our datasets are being used so that we can leverage support for classifying and mapping new areas and let users know of any updates. Please contact Diana Hickson by email (Diana.Hickson@wildlife.ca.gov) or by phone at 916-327-5956.

Extent

West -122.517666 East -118.485246
North 40.625632 South 34.880177

Scale Range
Maximum (zoomed in) 1:5,000
Minimum (zoomed out) 1:150,000,000

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota, environment


* Content type Downloadable Data
Export to FGDC CSDGM XML format as Resource Description No

Place keywords Great Valley Ecoregion, Sacramento Valley, Central Valley Riparian, Sacramento River, San Joaquin River, Kings River, Alameda County, Amador County, Butte County, Calaveras County, Colusa County, Contra Costa County, Fresno County, Glenn County, Kern county, Kings County, Madera County, Mariposa County, Merced County, Placer County, Sacramento County, San Benito County, San Joaquin County, San Luis Obispo County, Shasta County, Solano County, Stanislaus County, Sutter County, Tehama County, Tulare County, Tuolumne County, Yolo County, Yuba County, California

Theme keywords Alliance level, vegetation mapping

Theme keywords environment, biota

Thesaurus
Title ISO 19115 Topic Category




Citation

Title Vegetation - Great Valley Ecoregion [ds2632]
Publication date 2016-11-0700:00:00


Presentation formats * digital map


Citation Contacts

Responsible party
Individual's name Jason Schwenkler
Organization's name California State University, Chico, Geographical Information Center
Contact's position Director
Contact's role originator


Responsible party
Individual's name Diana Hickson
Organization's name California Department of Fish and Wildlife
Contact's position Senior Vegetation Ecologist
Contact's role point of contact


Contact information
Phone
Voice 9163275956

Address
Type
e-mail address Diana.Hickson@wildlife.ca.gov



Resource Details

Dataset languages * English(UNITED STATES)
Dataset character set utf8 - 8 bit UCS Transfer Format


Spatial representation type * vector


Supplemental information
Vegetation polygons were manually digitized as interpreted using the National Agricultural Inventory Program's 2009, 2012 and 2014 (NAIP) 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. 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 MapClass Schoenoplectus (acutus, californicus) is a mapping unit which includes two separate alliances which are within two separate groups. To retain the finest level of detail we crosswalked everything that was mapped to this mapping unit to the Schoenoplectus californicusSchoenoplectus acutus association in Schoenoplectus californicus alliance. Mapping standards are the same as are specified in Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area (CDFW and GIC 2013) and are summarized here. Please refer to that document for more information. Polygons are attributed with absolute percent cover of hardwood tree, conifer tree, total tree, and shrub life forms in 1% increments. Herb cover is attributed in one of five cover classes. Cover of all of the life forms were estimated using "Birdseye Total Cover" i.e., what can be seen on the aerial photo excluding understory layers when covered by an overstory layer. Cover estimates consider the porosity of the canopy (i.e., holes in the canopies of individual trees or shrubs). Tree type alliances were mapped when trees were >5% of the polygon. If there was a change in canopy overstory density or size class within the same alliance, the polygon was segregated if it was >5 acres. If the understory layer cover changed but the alliance remained the same, the polygon was segregated if it was >10 acres. Shrub vegetation alliances were mapped when tree cover was <5%, and the shrub cover was >10%. The percent of absolute shrub cover was estimated taking into account the porosity of the shrub layer. Heterotheca oregona, Allenrolfea occidentalis, Suaeda moquinii, Atriplex lentiformis, and Frankenia salina are the exceptions to this rule and are classified as shrub types with cover as low as 2%. Due to the difficulty of determining the presence of diagnostic native herbaceous species in grasslands of the Great Valley ecoregion, only those polygons that were definitively assessed based on field visits for map accuracy assessment, classification, or reconnaissance are labeled with CFG California Annual Forbs and Grasses or CPG California Perennial Grassland. All other herbaceous polygons are identified to the macrogroup level: California Annual and Perennial Grassland (M045 California Annual & Perennial Grassland). This macrogroup includes native and non-native ruderal herbaceous vegetation. To further refine those macrogroup labels requires additional field work that thoroughly inventories the polygons within a period where the native herbaceous component is identifiable (e.g., not during a prolonged drought or during a time of year where native species presence cannot be ascertained). IMPORTANT: Users should be aware that polygons labeled to this macrogroup may contain native grasslands or other herbaceous types, which may be considered rare, and should be visited in the field to ascertain the rarity or nativity of vegetation within the polygon. Central Valley Riparian and Sacramento Valley Vegetation Map This vegetation dataset combines mapping in the western Sacramento Valley with maps produced previously by the Department of Water Resources Central Valley Flood Protection Program's System-wide Planning Area (floodplains along the Sacramento and San Joaquin Rivers and major tributaries) and of the eastern Sacramento Valley. Mapping was completed from interpretation of the National Agricultural Inventory Program's 2009 (NAIP 2009) aerial imagery. The combined DWR and SGC mapping area was assessed for accuracy by VegCAMP. Overall users accuracy of the map was 88% and producers was 87%, thus exceeding the Federal Geographic Data Committees standard for such maps of 80%. Accuracy of the western Sacramento Valley portion of the map was not conducted but is assumed to be similar to the rest of the map given the same classification, imagery, and photointerpreters were used. More information on the classification can be found here: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=64011. More information on the mapping procedures and standards and the accuracy assessment methods and results can be found here: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420. Southern San Joaquin Valley Geodatabase feature class containing a map of vegetation of portions of the Southern San Joaquin Valley using the National Vegetation Classification System and Survey of California Vegetation standards produced by the Geographical Information Center (GIC) at CSU Chico. Vegetation polygons were manually digitized as interpreted using the National Agricultural Inventory Program's 2012 or 2014 aerial imagery at a scale of 1:2000 (year of imagery is an attribute). A total of 772 (6%) of the polygons were viewed in the field by the mappers. Due to funding limitations, accuracy of this entire map was not tested but is assumed to be consistent with the 88% users and 87% producers accuracy of the map of the Sacramento Valley based on the same classification and mapping standards produced by GIC. References References: Buck-Diaz, J., S. Batiuk and J. Evens. 2012. Vegetation Alliances and Associations of the Great Valley Ecoregion, California. California Native Plant Society. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=64011 California Department of Fish and Wildlife (CDFW) and Geographical Information Center (GIC). 2013. Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area, Final Report https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420 Miles, S.R., and C.B. Goudey. 1997. Ecological subregions of California. Technical Report R5-EM-TP-005. USDA Forest Service, Pacific Southwest Research Station, San Francisco, CA.
* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.0.5524


Credits
Geographic Information Center, Chico Research Foundation
ArcGIS item properties
* Name Vegetation - Great Valley Ecoregion [ds2632]
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -122.517666
* East longitude -118.485246
* North latitude 40.625632
* South latitude 34.880177
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -213096.531700
* East longitude 128190.340400
* South latitude -345869.448300
* North latitude 289941.643300
* Extent contains the resource Yes

Resource Maintenance

Resource maintenance
Update frequency unknown


Resource Constraints

Constraints
Limitations of use

DFW appreciates learning how our datasets are being used so that we can leverage support for classifying and mapping new areas and let users know of any updates. Please contact Diana Hickson by email (Diana.Hickson@wildlife.ca.gov) or by phone at 916-327-5956.


Spatial Reference

ArcGIS coordinate system
* Type Projected
* Geographic coordinate reference GCS_WGS_1984
* Projection WGS_1984_Web_Mercator_Auxiliary_Sphere
* Coordinate reference details
Projected coordinate system
Well-known identifier 102100
X origin -20037700
Y origin -30241100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 3857
Well-known text PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Reference system identifier
* Value 3857
* Codespace EPSG
* Version 8.8(9.3.1.2)


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS2632_20161107
* Object type composite
* Object count 0



ArcGIS Feature Class Properties
Feature class name DS2632_20161107
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 0
* Spatial index TRUE
* Linear referencing FALSE



Geoprocessing history

Process
Date 2016-11-0813:11:50
Tool location c:\program files (x86)\arcgis\desktop10.4\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Date 2016-11-0813:14:59
Tool location c:\program files (x86)\arcgis\desktop10.4\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Distribution

Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location https://www.wildlife.ca.gov/Data/BIOS
Function performed information

Fields

Details for object DS2632_20161107
* Type Feature Class
* Row count 0


Field OBJECTID
* Alias OBJECTID
* Data type OID
* Width 4
* Precision 10
* Scale 0
* Field description
Internal feature number.
* Description source
Esri
* Description of values
Sequential unique whole numbers that are automatically generated.




Field SHAPE
* Alias Shape
* Data type Geometry
* Width 4
* Precision 0
* Scale 0
* Field description
Feature geometry.
* Description source
Esri
* Description of values
Coordinates defining the features.




Field NVCSNAME
* Alias NVCSNAME
* Data type String
* Width 150
* Precision 0
* Scale 0
Field description
The standardized name of the vegetation description used in the 2008 National Vegetation Classification System (see http://usnvc.org/) . Since the NVCS does not have categories for human land use or otherwise unvegetated land, those descriptions were drawn from the California Wildlife Habitat Relationship.
Description source
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Field NVCSLEVEL
* Alias NVCSLEVEL
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
The standardized level of the vegetation description used in the 2008 National Vegetation Classification System (see http://usnvc.org/) .
Description source
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Field MAPCASS
* Alias MAPCASS
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The finest level of vegetation type mapped (alliance, group or macrogroup); or land use for polygons that are not natural vegetation, per the mapping classification.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)


Field MAPCLASSCODE
* Alias MAPCLASSCODE
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Code for each vegetation type mapped. MapClassCodes are defined in the MapClass field.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)


Field RIP_G
* Alias RIP_GROUP
* Data type String
* Width 3
* Precision 0
* Scale 0
Field description
Mapping at the group level followed the Manual of California Vegetation classes, 2nd EK. (Sawer et. al. 2009) All vegetated polygons were mapped to the group level during the medium scale mapping project and carried over into the fine scale project where they were further divided to the alliance level.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
List of values
Value ECW
Description California Evergreen Coniferous Forest and Woodland
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value IMF
Description Introduced North American Mediterranean Forest
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value RWF
Description Riparian Evergreen and Deciduous Woodland
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value VRF
Description Vancouverian Riparian Deciduous Forest
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value WVO
Description California Broadleaf Forest and Woodland
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CMC
Description Californian Mesic Chaparral
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CSS
Description Central and South Coastal California Seral Scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CXC
Description California Xeric Chaparral
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value RIS
Description Riparian Introduced Scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value RWS
Description Southwestern North American Riparian Wash/Scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value SSB
Description Southwestern North American Salt Basin and High Marsh
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CAI
Description California Introduced Annual and Perennial Herbaceous
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CFG
Description California Annual Forbs and Grasses
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value FEM
Description Freshwater Emergent Marsh
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value NRW
Description Naturalized Warm-Temperate Riparian/Wetland
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value NTF
Description Naturalized Temperate Pacific Freshwater Vegetation
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value TFF
Description Temperate Freshwater Floating Mat
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value VPG
Description California Vernal Pool and Grassland Matrix Provisional
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value VPB
Description Californian Mixed Annual/Perennial Freshwater Vernal Pool / Swale Bottomland
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value WTM
Description California Warm Temperate Marsh/Seep
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value AGR
Description Agriculture


Value BGS
Description Barren gravel and sand


Value URB
Description Urban


Value WAT
Description Water


Value SVP
Description Sparsely Vegetated Playa/Pool


Value AGP
Description Alkali Grassland - Playa/Pool Matirx


Value CRO
Description North American warm desert bedrock cliff and outcrop
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CCS
Description Central and South coastal Californian coastal sage scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value DWS
Description Sonoran-Coloradan semi-desert wash woodland/scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value IDS
Description Intermontane deep or well-drained soil scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value ISS
Description Intermonane seral scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value LDS
Description Lower Bajada and Fan Mojavean-Sonoran desert scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value MDS
Description Western Cordilleran montane deciduous scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value MSC
Description Western Mojavean and Western Sonoran Desert borderland chaparral
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value MWS
Description Mojavean semi-desert wash scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value SSS
Description Shadscale-Saltbush cool semi-desert scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value QMG
Description Stripmines, quarries and gravel pits


Value VCS
Description Vancouverian coastal deciduous scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value BDS
Description California Coastal evergreen bluff and dune scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CAP
Description California Annual and Perennial Grassland
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CCC
Description Central California Coast Ranges cliff and canyon
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value CMF
Description California Montane Forest
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value DAM
Description Western North American Disturbed Alkaline Marsh and Meadow
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value DUP
Description Dry Upland Perennial Grassland
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value DWS
Description Sonoran-Coloradan semi-desert wash woodland/scrub
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value LSH
Description California-Vancouverian semi-natural littoral scrub and herb vegetation
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value SAM
Description Southwestern North American Alkali Marsh/Seep Vegetation
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value TBM
Description Temperate Pacific Tidal Salt and Brackish Meadow
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Value VCM
Description Vancouverian Coastal/Tidal Marsh and Meadow
Enumerated domain value definition source A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)




Field HT_CODE
* Alias HT_CODE
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Average tree height for the polygon was estimated by taking a modal mean. Remove outlyers and then take an average of the most commonly occuring height class. Four heigh classes were used 2-5, 5-10, 10-15, and >15 Meters.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
List of values
Value 4
Description 2 - 5 meters


Value 5
Description 5 - 10 meters


Value 6
Description 10 - 15 meters


Value 7
Description > 15 meters




Field SIZE_CATEG
* Alias SIZE_CATEGORY
* Data type String
* Width 100
* Precision 0
* Scale 0
Field description
Average tree diameters were estimated at breast height for each polygon and cassified into one of six categories.
Description source
A Guide to Wildlife Habitats of California (USDA et. al. 1988).
List of values
Value 1
Description Seedlings (<1")


Value 2
Description Saplings (1-6")


Value 3
Description Pole (6-11")


Value 4
Description Small (11-24")


Value 5
Description Medium-Large (>24)


Value 6
Description Multi Layered Med-Lrg Trees over smaller trees in densities >60%




Field PER_HARDWO
* Alias PER_HARDWOOD
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
The absolute percentage of the polygon occupied by hardwood trees, does not include conifers.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)


Field PER_CONIFE
* Alias PER_CONIFE
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
The absolute percentage of the polygon occupied by coniferous trees, does not include hardwoods.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)


Field PER_TREE
* Alias PER_TREE
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
The sum of the hardwoods and conifers. Absolute percentage of space in a polygon occupied by trees.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)


Field PER_SHRUB
* Alias PER_SHRUB
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
The absolute percentage of the polygon that is occupied by shrubs.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)


Field HERB_CODE
* Alias HERB_CODE
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
The absolute percentage of the polygon that is occupied by grasses. They were classified into one of six categories.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
List of values
Value 1
Description < 2%


Value 2
Description 2 - 9%


Value 3
Description 10 - 39%


Value 4
Description 40 - 59%


Value 5
Description > 59%


Value 99
Description > 40% Woody




Field PER_TOTAL
* Alias PER_TOTAL_COVER
* Data type Double
* Width 8
* Precision 38
* Scale 8
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
Field description
Total cover is the sum of total tree, shrub and the mean of the herbaceous layers. Each layer takes into account the porosity of the canopy which results in lower numbers than one might perceive. A polygon with a value of 40 would look almost completly covered in vegetaion.


Field ISOLATED_T
* Alias ISOLATED_TREE
* Data type String
* Width 3
* Precision 0
* Scale 0
Field description
Isolated tree is coded Y for Yes if the polygon contains less than 5% trees.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
List of values
Value Y
Description Yes




Field JOSHUA_T
* Alias JOSHUA_TREE
* Data type String
* Width 50
* Precision 0
* Scale 0
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
Field description
Joshua Tree. Indicates the presence of Joshua trees in the polygon. The presence of Joshua tress was recorded using the following categories: N/A Not applicable -outside of the range of Joshua tree, None or none Observable, 0-1%, 1-5%, >5%.
List of values
Value 0
Description None or Not observable


Value 1
Description 0-1%


Value 2
Description 1-5%


Value 3
Description greater than 5%


Value 9
Description N/A




Field RESTORATIO
* Alias RESTORATION
* Data type String
* Width 3
* Precision 0
* Scale 0
Field description
Restoration is coded Y for Yes if any portion of the polygon was a part of a restoration project.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
List of values
Value Y
Description Yes




Field CLEARING_D
* Alias CLEARING_DISTURBANCE
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
The absolute percentage of clearing disturbaces, such as roads, trails, disking, or scraping, were estimated for each polygon and classified into one of four categories.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
List of values
Value 1
Description Minimal Disturbance = 5-25%


Value 2
Description Moderate Disturbance = 25-50%


Value 3
Description High Disturbance = >50%


Value 4
Description No Disturbance = <5%




Field INVASIVE_P
* Alias INVASIVE_PLANT
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Visually observable invasive species were recorded and classified into one of four categories. The target species were Rubus armeniacus, Arundo donax, and Tamrix spp.
Description source
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
List of values
Value 1
Description No Invasive = <5%


Value 2
Description Low Invasive = 5-25%


Value 3
Description Moderate Invasive = 25-50%


Value 4
Description High Invasive = >50%




Field Ortho_Base_Year
* Alias Ortho_Base_Year
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Identifies the year for the base imagery used when mapping the polygon.


Field UID
* Alias UID
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
Unique identifier for each polygon.


Field CALVEGNAME
* Alias CALVEGNAME
* Data type String
* Width 100
* Precision 0
* Scale 0
Field description
A crosswalk to the CalVeg vegetation system. Note that there may be a one-to-many relationship between CalVeg and NVCS. See http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 .


Field CALVEGCODE
* Alias CALVEGCODE
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
A crosswalk to the CalVeg vegetation system. Note that there may be a one-to-many relationship between CalVeg and NVCS. See http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 .


Field CWHRTYPE
* Alias CWHRTYPE
* Data type String
* Width 100
* Precision 0
* Scale 0
Field description
A crosswalk to the California Wildlife Habitat Relationships system. Note that there is usually a one-to-many relationship between CWHR and NVCS. See http://www.dfg.ca.gov/biogeodata/cwhr/ .


Field CWHRCODE
* Alias CWHRCODE
* Data type String
* Width 15
* Precision 0
* Scale 0
Field description
A crosswalk to the California Wildlife Habitat Relationships system. Note that there is usually a one-to-many relationship between CWHR and NVCS. See http://www.dfg.ca.gov/biogeodata/cwhr/ .


Field GLOBALRANK
* Alias GLOBALRANK
* Data type String
* Width 5
* Precision 0
* Scale 0
Field description
The global rarity rank of the plant community (only for polygons mapped to the alliance level). G1: Fewer than 6 viable occurrences and/or 2000 acres worldwide; G2: 6-20 viable occurrences and/or 2000-10,000 acres worldwide; G3: 21-100 viable occurrences and/or 10,000-50,000 acres worldwide; G4: Greater than 100 viable occurrences and/or greater than 50,000 acres worldwide; G5: Community demonstrably secure due to secure worldwide abundance. See: http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf


Field STATERANK
* Alias STATERANK
* Data type String
* Width 5
* Precision 0
* Scale 0
Field description
The state rarity rank of the plant community (only for polygons mapped to the alliance level). S1: Fewer than 6 viable occurrences and/or 2000 acres statewide; S2: 6-20 viable occurrences and/or 2000-10,000 acres statewide; S3: 21-100 viable occurrences and/or 10,000-50,000 acres statewide; S4: Greater than 100 viable occurrences and/or greater than 50,000 acres statewide; S5: Community demonstrably secure due to secure statewide abundance. See: http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf


Field RARE
* Alias RARE
* Data type String
* Width 3
* Precision 0
* Scale 0
Field description
Rarity of the vegetation type. Alliances and associations with state ranks of S1-S3 are considered rare.


Field CACODE
* Alias CACODE
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
California Natural Community Codes - unique code assigned to alliances and associations.


Field NVCSALLIANCE
* Alias NVCSALLIANCE
* Data type String
* Width 100
* Precision 0
* Scale 0
Field description
The standardized name for the alliance within the 2008 National Vegetation Classification System. See http://usnvc.org/ .
Description source
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Field NVCSGROUP
* Alias NVCSGROUP
* Data type String
* Width 150
* Precision 0
* Scale 0
Field description
The standardized name for the group within the 2008 National Vegetation Classification System. See http://usnvc.org/ .
Description source
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Field NVCSMG
* Alias NVCSMG
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
The standardized name for the macrogroup within the 2008 National Vegetation Classification System. See http://usnvc.org/ .
Description source
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)


Field ACRES
* Alias ACRES
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
GIS-calculated area measurements of each mapped polygon.


Field HECTARES
* Alias HECTARES
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
GIS-calculated area measurements of each mapped polygon.


Field Shape.STArea()
* Alias Shape.STArea()
* Data type Double
* Width 0
* Precision 0
* Scale 0




Field Shape.STLength()
* Alias Shape.STLength()
* Data type Double
* Width 0
* Precision 0
* Scale 0






Overview Description
Entity and Attribute Overview
Note: certain fields have been added by the Department of Fish and Game's Vegetation Classification and Mapping Program. These include crosswalks to the Wildlife Habitat Relationships and CalVeg classification systems, Global and State Ranks, CaCode and the fields relating the mapping units to the National Vegetation Classification System as it is described for California in the 2nd edition of the Manual of California Vegetation. The original Great Valley Ecoregion vegetation map completed by GIC extended beyond the boundary of the Great Valley Ecoregion and incorporated the Proposed Tehachapi Pass High Speed Rail Corridor vegetation map (ds1328). The final map was clipped to the Great Valley Ecoregion boundary and the portion of the Tehachapi map that fell outside of the Great Valley Ecoregion was removed. The original attributes and cover values were retained for polygons that had been split as a result of the removal of the Tehachapi map.




Metadata Details

* Metadata language English(UNITED STATES)
* Metadata character set utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata * dataset
Scope name * dataset


* Last update 2016-11-08


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2016-11-0813:10:13
Last modified in ArcGIS for the item 2016-11-0813:12:08


Automatic updates
Have been performed Yes
Last update 2016-11-0813:12:08


Metadata Contacts

Metadata contact
Individual's name Diana Hickson
Organization's name California Department of Fish and Wildlife
Contact's position Senior Vegetation Ecologist
Contact's role point of contact


Contact information
Phone
Voice 9163275956

Address
Type
e-mail address Diana.Hickson@wildlife.ca.gov



Metadata Maintenance

Maintenance
Update frequency unknown


Metadata Constraints

Constraints
Limitations of use

DFW appreciates learning how our datasets are being used so that we can leverage support for classifying and mapping new areas and let users know of any updates. Please contact Diana Hickson by email (Diana.Hickson@wildlife.ca.gov) or by phone at 916-327-5956.


Thumbnail and Enclosures