Jason Schwenkler, California State University, Chico, Geographical Information Center, Director
20181011
Vegetation - Great Valley Ecoregion [ds2632]
vector digital data
https://www.wildlife.ca.gov/Data/BIOS
https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/2600_2699/ds2632.zip
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 Programs (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).
This dataset was produced to facilitate regional planning, conservation, and enhancement of biological resources by state agencies, project partners and regional stakeholders.
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 californicus–Schoenoplectus 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 Committee’s 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.
Unknown
-122.517666
-118.485246
40.625632
34.880177
None
Alliance level, vegetation mapping, vegetation
ISO 19115 Topic Category
environment, biota
None
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
None
License: This work is licensed under Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Using the citation standards recommended for BIOS datasets (https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS) satisfies the attribution requirements of this license.Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.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 VegCamp Lead by email (VegCAMP@wildlife.ca.gov) or by phone at (916) 324-9765.
California Department of Fish and Wildlife
VegCAMP (Vegetation Classification and Mapping Program)
Program Lead, VegCAMP (Vegetation Classification and Mapping Program)
mailing and physical
1700 9th Street, 4th Floor
Sacramento
CA
95811
(916) 324-9765
VegCAMP@wildlife.ca.gov
California Department of Fish and Wildlife
VegCAMP (Vegetation Classification and Mapping Program)
Program Lead, VegCAMP (Vegetation Classification and Mapping Program)
mailing and physical
1700 9th Street, 4th Floor
Sacramento
CA
95811
(916) 324-9765
VegCAMP@wildlife.ca.gov
Geographic Information Center, Chico Research Foundation
Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333
Vector
GT-polygon composed of chains
96180
NAD 1983 California Teale Albers
34.0
40.5
-120.0
0.0
0.0
-4000000.0
coordinate pair
0.0001
0.0001
meter
D North American 1983
GRS 1980
6378137.0
298.257222101
ds2632
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
SHAPE
Feature geometry.
Esri
Coordinates defining the features.
NVCSNAME
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.
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
NVCSLEVEL
The standardized level of the vegetation description used in the 2008 National Vegetation Classification System (see http://usnvc.org/).
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
MAPCLASS
Map class
MAPCLASSCODE
Code for each vegetation type mapped. MapClassCodes are defined in the MapClass field.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
RIP_G
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.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
ECW
California Evergreen Coniferous Forest and Woodland
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
IMF
Introduced North American Mediterranean Forest
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
RWF
Riparian Evergreen and Deciduous Woodland
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
VRF
Vancouverian Riparian Deciduous Forest
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
WVO
California Broadleaf Forest and Woodland
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CMC
Californian Mesic Chaparral
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CSS
Central and South Coastal California Seral Scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CXC
California Xeric Chaparral
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
RIS
Riparian Introduced Scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
RWS
Southwestern North American Riparian Wash/Scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
SSB
Southwestern North American Salt Basin and High Marsh
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CAI
California Introduced Annual and Perennial Herbaceous
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CFG
California Annual Forbs and Grasses
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
FEM
Freshwater Emergent Marsh
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
NRW
Naturalized Warm-Temperate Riparian/Wetland
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
NTF
Naturalized Temperate Pacific Freshwater Vegetation
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
TFF
Temperate Freshwater Floating Mat
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
VPG
California Vernal Pool and Grassland Matrix Provisional
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
VPB
Californian Mixed Annual/Perennial Freshwater Vernal Pool / Swale Bottomland
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
WTM
California Warm Temperate Marsh/Seep
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
AGR
Agriculture
BGS
Barren gravel and sand
URB
Urban
WAT
Water
SVP
Sparsely Vegetated Playa/Pool
AGP
Alkali Grassland - Playa/Pool Matirx
CRO
North American warm desert bedrock cliff and outcrop
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CCS
Central and South coastal Californian coastal sage scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
DWS
Sonoran-Coloradan semi-desert wash woodland/scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
IDS
Intermontane deep or well-drained soil scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
ISS
Intermonane seral scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
LDS
Lower Bajada and Fan Mojavean-Sonoran desert scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
MDS
Western Cordilleran montane deciduous scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
MSC
Western Mojavean and Western Sonoran Desert borderland chaparral
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
MWS
Mojavean semi-desert wash scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
SSS
Shadscale-Saltbush cool semi-desert scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
QMG
Stripmines, quarries and gravel pits
VCS
Vancouverian coastal deciduous scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
BDS
California Coastal evergreen bluff and dune scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CAP
California Annual and Perennial Grassland
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CCC
Central California Coast Ranges cliff and canyon
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
CMF
California Montane Forest
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
DAM
Western North American Disturbed Alkaline Marsh and Meadow
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
DUP
Dry Upland Perennial Grassland
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
DWS
Sonoran-Coloradan semi-desert wash woodland/scrub
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
LSH
California-Vancouverian semi-natural littoral scrub and herb vegetation
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
SAM
Southwestern North American Alkali Marsh/Seep Vegetation
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
TBM
Temperate Pacific Tidal Salt and Brackish Meadow
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
VCM
Vancouverian Coastal/Tidal Marsh and Meadow
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
HT_CODE
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.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
4
2 - 5 meters
5
5 - 10 meters
6
10 - 15 meters
7
> 15 meters
SIZE_CATEG
Average tree diameters were estimated at breast height for each polygon and cassified into one of six categories.
A Guide to Wildlife Habitats of California (USDA et. al. 1988).
1
Seedlings (<1")
2
Saplings (1-6")
3
Pole (6-11")
4
Small (11-24")
5
Medium-Large (>24)
6
Multi Layered Med-Lrg Trees over smaller trees in densities >60%
PER_HARDWO
The absolute percentage of the polygon occupied by hardwood trees, does not include conifers.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
PER_CONIFE
The absolute percentage of the polygon occupied by coniferous trees, does not include hardwoods.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
PER_TREE
The sum of the hardwoods and conifers. Absolute percentage of space in a polygon occupied by trees.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
PER_SHRUB
The absolute percentage of the polygon that is occupied by shrubs.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
HERB_CODE
The absolute percentage of the polygon that is occupied by grasses. They were classified into one of six categories.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
1
< 2%
2
2 - 9%
3
10 - 39%
4
40 - 59%
5
> 59%
99
> 40% Woody
PER_TOTAL
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.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
ISOLATED_T
Isolated tree is coded Y for Yes if the polygon contains less than 5% trees.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
Y
Yes
JOSHUA_T
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%.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
0
None or Not observable
1
0-1%
2
1-5%
3
greater than 5%
9
N/A
RESTORATIO
Restoration is coded Y for Yes if any portion of the polygon was a part of a restoration project.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
Y
Yes
CLEARING_D
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.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
1
Minimal Disturbance = 5-25%
2
Moderate Disturbance = 25-50%
3
High Disturbance = >50%
4
No Disturbance = <5%
INVASIVE_P
Visually observable invasive species were recorded and classified into one of four categories. The target species were Rubus armeniacus, Arundo donax, and Tamrix spp.
Fine-Scale Riparian Vegetation Mapping of the Central Valley Flood Protection Plan Area 2013 (https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=74420)
1
No Invasive = <5%
2
Low Invasive = 5-25%
3
Moderate Invasive = 25-50%
4
High Invasive = >50%
COMMENTS
Comments
Ortho_Base_Year
Identifies the year for the base imagery used when mapping the polygon.
UID
Unique identifier for each polygon.
CALVEGNAME
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.
CALVEGCODE
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.
CWHRTYPE
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/.
CWHRCODE
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/.
GLOBALRANK
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
STATERANK
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
RARE
Rarity of the vegetation type. Alliances and associations with state ranks of S1-S3 are considered rare.
CACODE
California Natural Community Codes - unique code assigned to alliances and associations.
NVCSALLIANCE
The standardized name for the alliance within the 2008 National Vegetation Classification System. See http://usnvc.org/.
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
NVCSGROUP
The standardized name for the group within the 2008 National Vegetation Classification System. See http://usnvc.org/.
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
NVCSMG
The standardized name for the macrogroup within the 2008 National Vegetation Classification System. See http://usnvc.org/.
A Manual of California Vegetation, Second Edition (Todd Keeler-Wolf et.al 2009)
ACRES
GIS-calculated area measurements of each mapped polygon.
HECTARES
GIS-calculated area measurements of each mapped polygon.
SHAPE_Length
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
SHAPE_Area
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
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.
20221215
California Department of Fish and Wildlife
VegCAMP (Vegetation Classification and Mapping Program)
Program Lead, VegCAMP (Vegetation Classification and Mapping Program)
mailing and physical
1700 9th Street, 4th Floor
Sacramento
CA
95811
(916) 324-9765
VegCAMP@wildlife.ca.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
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.