Wildlife and Habitat Data Analysis Branch, California Department of Fish and Wildlife
Aerial Information Systems, Redlands, CA
Information Center for the Environment, University of California, Davis
20040101
Vegetation - Napa County and Blue Ridge Berryessa [ds201]
vector digital data
https://www.wildlife.ca.gov/Data/BIOS
https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/200_299/ds201.zip
In 1995, the Manual of California Vegetation (MCV) introduced a quantitatively based method for classifying and mapping vegetation in California. In 2002 Department of Fish and Wildlife, Information Center for the Environment, and Aerial Information Systems used this method to develop a classification of vegetation types for Napa County, and to attribute the polygons of a new vegetation map. The complete report for this study can be viewed at: http://www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=14660.
Physical and biotic conditions, along with site history, drive the composition of plants found at any site. Therefore, vegetation represents a unique biotic response to local environmental conditions at a site. Vegetation composition is in turn a major factor in determining what animals may be present. Because of the interactions between environment, plants, vegetation and community structure, vegetation distribution has long interested ecologists and natural resource managers. Documenting regional vegetation is useful for many purposes, including biodiversity assessment, conservation planning, resource management, and species distribution modeling.
METHODS
We digitized vegetation polygons and characterized their vegetation from the most recently available DOQQ’s for Napa County, flown in 1993. Map development had five stages:
1) landcover (vegetation) classification and minimum mapping unit (MMU) definition;
2) base map imagery and ancillary GIS data layers acquisition;
3) field reconnaissance to refine the classification and develop a photo interpretation key;
4) vegetation polygon delineation and attribution; and
5) field verification to assess polygon label accuracy and revise polygon definitions and the photo interpretation key, as needed. A five-person crew conducted photo interpretation, polygon delineation and attributing from February to June 2002. A two-person crew conducted field verification from early August through late October 2002. The new map was produced by on-screen digitizing over USGS Digital Orthophoto Quarter Quads (DOQQ’s) with the aid of ancillary digital maps. We identified the distribution of 56 landcover types, 48 dominated by natural vegetation, at the alliance or aggregated alliance level, in 28,456 polygons across 2042 km2. The effective minimum mapping unit is below one hectare.
The methods used, the mapping classification system developed, and the extents of landcover types mapped are presented. In a comparison with two previous digital vegetation maps for the area, the US Forest Service’s CalVeg and the Gap Analysis Program’s GAP maps, the Manual of California Vegetation (MCV) map had finer spatial and floristic resolution. The MCV map has 15 more vegetation types than CalVeg and 22 more vegetation types than GAP. The MCV map contains more riparian corridors and isolated wetlands, identifying 157 km2 of these types, compared to 7 km2 for CalVeg and a non-spatial result for GAP. A complete description of the methods can be viewed at: http://www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=14660. REFERENCES Sawyer, J. O. and T. Keeler-Wolf. 1995. A manual of California vegetation. California Native Plant Society, Sacramento, CA. Thorne, JH, JA Kennedy, JF Quinn, M McCoy, T Keeler-Wolf, J Menke 2004. A vegetation map of Napa County using the manual of California Vegetation Classification and its comparison to other digital vegetation maps. Madrona 51(4): 343-363. (can be viewed at: http://www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=14660)
20020101
ground condition
None planned
-122.665224
-121.995417
39.111098
38.146242
None
fir
pine
vegetation map
redwood
cypress
oak
vegetation
chemise
maple
laurel
riparian
alder
ISO 19115 Topic Category
biota
environment
None
California
Napa County
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.Cite the publication Thorne et al., 2004
California Department of Fish and Wildlife
VegCAMP (Vegetation Classification and Mapping Program)
Vegetation Classification and Mapping Program
physical
1700 9th Street, 4th Floor
Sacramento
CA
95811
US
(916) 324-9765
VegCAMP@wildlife.ca.gov
California Department of Fish and Wildlife
VegCAMP (Vegetation Classification and Mapping Program)
Vegetation Classification and Mapping Program
physical
1700 9th Street, 4th Floor
Sacramento
CA
95811
US
(916) 324-9765
VegCAMP@wildlife.ca.gov
California Department of Fish and Wildlife
Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270
Vector
GT-polygon composed of chains
47498
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
ds201
Vegetation - Napa County and Blue Ridge Berryessa [ds201]
OBJECTID_1
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
OBJECTID
NVCSName
The standardized name of the vegetation description used in the National Vegetation Classification System (see http://biology.usgs.gov/npsveg/nvcs.html). 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.
NVCSLevel
The standardized level of the vegetation description used in the National Vegetation Classification System (see http://biology.usgs.gov/npsveg/nvcs.html).
MapClass
The finest level of vegetation type mapped (alliance, association, group or macrogroup); or land use for polygons that are not natural vegetation, per the mapping classification.
PI
Photo interpretation key code.
1100
Winter-Rain Sclerophyll Forests and Woodlands Formation
1101
California Bay-Madrone-Coast Live Oak -(Black Oak-Big Leaf Maple) NFD Super Alliance (Umbellularia californica-Arbutus menziesii-Quercus agrifolia) (Quercus kellogii-Acer macrophyllum)
1122
Canyon Live Oak Alliance (Quercus chrysolepis)
1123
Eucalyptus Alliance (Eucalyptus spp.)
1124
Tanbark Oak Alliance (Lithocarpus densiflorus)
1201
Coast Live Oak-Blue Oak-(Foothill Pine) NFD Association (Quercus agrifolia-Quercus douglasii (Pinus sabiniana))
1202
Canyon Live Oak-Blue Oak-(Foothill Pine) NFD Association (Quercus chrysolepis-Quercus douglasii (Pinus sabiniana))
1221
Coast Live Oak Alliance (Quercus agrifolia)
1222
Interior Live Oak Alliance (Quercus wislizenii)
1223
Mixed Oak Alliance (Quercus spp.)
2104
Foothill Pine/Mesic non-serpentine chaparral NFD Association (Pinus sabiniana)
2121
Foothill Pine Alliance (Pinus sabiniana)
2122
Knobcone Pine Alliance (Pinus attenuate)
2123
Ponderosa Pine Alliance (Pinus ponderosa)
2124
McNab Cypress Alliance (Cupressus macnabiana)
2125
Sargent Cypress Alliance (Cupressus sargentii)
2127
California Juniper Alliance (Juniperus californica)
2128
Sparce California Juniper - Canyon Live Oak - California Bay - California Buckeye / Steep Rock Outcrop NFD Alliance
2201
Coast Redwood Douglas Fir/California Bay NFD Association (Sequoia sempervierens-Pseudotsuga menziesii/Umbellularia californica)
2222
Douglas Fir Alliance (Pseudotsuga menziesii)
2224
Douglas Fir-Ponderosa Pine Alliance (Pseudotsuga menziesii-Pinus ponderosa)
2230
Coast Redwood Alliance (Sequoia sempervierens)
3101
Valley Oak-(California Bay-Coast Live Oak-Walnut-Ash) Riparian Forest NFD Association (Quercus lobata-(Umbellularia californica-Quercus agrifolia-Juglans californica-Fraxinus dipetala)
3102
Valley Oak - Fremont Cottonwood (Coast Live Oak) Riparian NFD- Association
3121
Black Oak Alliance
3122
Blue Oak Alliance
3123
Valley Oak Alliance
3124
Oregon White Oak Alliance
3201
White Alder (Mixed Willow - California Bay - Big Leaf Maple) Riparian NFD- Association
3221
Mixed Willow Super Alliance (Salix spp.)
4000
Evergreen Shrubland
4300
Sclerophyllous Shrubland Formation
4301
Interior Live Oak - Scrub Oak - (California Bay - Flowering Ash - Birch Leaf Mountain Mahogany - Buckbrush) Mesic East County NFD- Super Alliance
4302
Mixed Manzanita - (Interior Live Oak - California Bay - Chamise) West County NFD Alliance
4303
Leather Oak - White Leaf Manzanita - Chamise Xeric Serpentine NFD- Super Alliance
4304
Leather Oak - California Bay - Rhamnus spp. Mesic Serpentine NFD- Alliance
4307
Toyon - (Foothill Pine/Chamise)/Annual Grasses Savanna NFD Alliance
4321
Chamise Alliance
4322
Chamise - Wedge Leaf Ceanothus Alliance
4325
White Leaf Manzanita Alliance
4501
Coyote Brush - California Sagebrush (Lupine spp.) NFD- Super Alliance
4502
Sparce Bush Lupine/Annual Grasses/Rock Outcrop NFD Alliance
4503
Lotus scoparius Alliance (post-burn)
4531
Tamarisk spp. Alliance
5222
Brewer Willow Alliance
6321
Giant Reed Alliance
6401
(Alkali Bulrush - Bulrush) Brackish Marsh Super -Alliance (not mapped)
6402
(Bulrush - Cattail) Fresh Water Marsh NFD- Super Alliance
6403
(Carex spp. - Juncus spp. - Wet Meadow Grasses) NFD- Super Alliance
6501
Saltgrass - Pickleweed NFD- Super Alliance
7100
Upland Annual Grasslands & Forbs Formation
7101
Restoration Sites
7120
California Annual Grasslands Alliance
7130
Serpentine Grassland NFD- Super Alliance
9001
Rock Outcrop
9002
Riverine, Lacustrine and Tidal Mudflats
9003
Serpentine Barrens
9100
Urban or Built-up
9200
Agriculture
9300
Vacant
9400
Water
9999
Unidentified
SIZE_
Coded for diameter of trunk.
1
Seedlings (less than 1")
2
Saplings (1-6")
3
Pole (6-11")
4
Small (11-25")
5
Medium - Large (Greater than 25")
6
Multi Layered Medium to Large Trees over smaller trees in Densities >60%
9
Not applicable
DENSITY
Refers to the density of the life form being mapped (i.e., tree, shrub, herbaceous).
1
Greater than 60%
2
40-60%
3
25-40%
4
10-25%
5
2-10%
9
Not applicable
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 mapped (only for alliances). See: http://www.natureserve.org/publications/ConsStatusAssess_RankMethodology.jsp.
StateRank
StateRank: The state rarity rank of the plant community mapped (only for alliances). See: http://www.natureserve.org/publications/ConsStatusAssess_RankMethodology.jsp.
Rare
Rarity of the vegetation type. Alliances and associations with state ranks of S1-S3 are considered rare.
Yes
Rare
No
Not Rare
U
Unknown
CaCode
California Natural Community Codes - unique code assigned to alliances and associations.
NVCSAllian
The standardized name for the alliance within the National Vegetation Classification System. See http://biology.usgs.gov/npsveg/nvcs.html.
NVCSGroup
The standardized name for the group within the National Vegetation Classification System. See http://biology.usgs.gov/npsveg/nvcs.html.
NVCSMG
The standardized name for the macrogroup within the National Vegetation Classification System. See http://biology.usgs.gov/npsveg/nvcs.html.
ACRES
GIS-calculated area measurements of each mapped polygon.
HECTARES
GIS-calculated area measurements of each mapped polygon.
UID
Unique identifier for each polygon.
Shape_Leng
Length of feature in internal units.
ESRI
Positive real numbers that are automatically generated.
Shape_STAr
Shape_STLe
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.
20220324
California Department of Fish and Wildlife
VegCAMP (Vegetation Classification and Mapping Program)
Vegetation Classification and Mapping Program
physical
1700 9th Street, 4th Floor
Sacramento
CA
95811
US
(916) 324-9765
VegCAMP@wildlife.ca.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time