Vegetation - Northern Sierra Nevada Foothills [ds566]

SDE Feature Class

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Tags
biota, ImageryBaseMapsEarthCover, California, Sierra Nevada, vegetation, environment


Summary

The final products will assist agencies and other interested organizations in fire modeling, resource protection, and restoration efforts. It will also be used in land and vegetation change analyses where older information exists and serves as a basis for future monitoring effors

Description

The California Department of Fish and Game (CDFG) worked collaboratively with the California Native Plant Society (CNPS) and Aerial Information Systems (AIS) to produce a fine-scale vegetation map of the northern Sierra Nevada Foothills region, here defined by the two northern subsections of the USDA's Sierra Nevada Foothills Section (Miles and Goudey 1997). This includes 2.6 million acres of land, with approximately 15% under public ownership and 85% under private ownership. Vegetation sampling by means of the CNPS Relev and Rapid Assessment Protocols was used to obtain a total of 710 Relevs and 1691 Rapid Assessments, which were used to develop a quantitative classification based on cluster and indicator species analyses. The resulting classification describes vegetation types according to the National Vegetation Classification System; and was used as a basis for creating a map classification generally at the alliance level, where natural vegetation stands were discernable to that level using 1-meter aerial imagery acquired as part of the National Agricultural Imagery Program (NAIP) in 2005 and 2009. The vegetation map includes 67 map units, of which 54 are natural vegetation map units at the floristic alliance level or higher (group) level and 13 are non-vegetation land use mapping units.

Credits

Use limitations

Extent

West -122.238525 East -119.899913
North 40.704387 South 37.076580

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource imageryBaseMapsEarthCover, environment, biota


* Content type Downloadable Data


Place keywords California, Sierra Nevada

Theme keywords vegetation

Theme keywords biota, ImageryBaseMapsEarthCover, environment

Thesaurus
Title ISO 19115 Topic Category




Citation

* Title DS0566_20110609
Publication date 2011-06-07


Presentation formats * digital map


Citation Contacts

Responsible party
Organization's name Aerial Information Systems under contract to CA Dept. of Fish and Game
Contact's role originator


Resource Details

Dataset languages English(UNITED STATES)


Status completed
Spatial representation type * vector


Supplemental information
The study area contains or abuts two previous projects that were mapped for CNPS. The Lassen Foothills project, conducted in 2007-08, is contained in Module 1. The Tuolumne Table Mountain project, conducted in 2003, is adjacent to Modules 3 and 4. An attempt was made to edgematch lines and equivalent vegetation types across the project boundaries. The Lassen Foothills project (approx. 100,000 acre area): The Lassen Foothills project was mapped using a slightly different mapping classification and criteria for vegetation type and cover density. If the estimated covers did not match, then the polygons were assessed by a qualified photo interpreter to determine if they should actually be merged. An example: If only a small portion of a vegetation polygon was within the boundary of one of the map projects, then the cover estimates might not have been accurate. The whole polygon was reassessed as one unit. If the line work for the edge-matched polygons corresponded and obviously should be one polygon (i.e. the same vegetation and vegetation cover) and yet the map unit attributes were conflicting for the edge polygons, then the polygons were merged and a qualified photo interpreter reassessed and updated the attributes for the entire polygon. If an edge polygon from either project contained an inclusion that was below the minimum mapping unit and was therefore not delineated, but the edge matched polygon from the other map recognized that inclusion as a separate polygon (and together they met the minimum mapping unit), then the inclusion was split from the original polygon and merged with the edge polygon with the correct attributes. If the edge matched polygons were mapped to a different level in the hierarchy, a qualified photo interpreter determined if the polygons should remain separate, be merged at the higher lever, or merged at the finer level of the hierarchy. Few changes were made to the original Lassen Foothills database. These changes include recoding any generic riparian Lassen vegetation types of Sonoran Riparian Broadleaf Deciduous Woodlands and Madrean Warm-temperate Riparian Wash Scrub to the alliance level. In addition, height and size were also systematically coded to the polygons and adjustments to the assigned code were made through photo interpreted review of each polygon. Tuolumne Table Mountain (approx. 4,000 acre area): The Table Mountain project was incorporated into the NSNF project by correlating and converting the Table Mountain vegetation types to the NSNF vegetation type criteria and codes. The Table Mountain project therefore was recoded for conifer, hardwood, shrub, and herbaceous density, and coded for disturbance, exotics, height, size, and land use. The polygon boundaries across the study area were edgematched and the study area boundary between the two projects dissolved once complete. A complete report is available at: http://www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=31346
* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143


ArcGIS item properties
* Name DS0566_20110609
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
ground condition
Temporal extent
Beginning date 2008-01-01
Ending date 2011-01-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -122.238525
* East longitude -119.899913
* North latitude 40.704387
* South latitude 37.076580
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13607530.373700
* East longitude -13347197.211100
* South latitude 4449786.419000
* North latitude 4968836.158200
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Diana Hickson
Organization's name CA Dept. of Fish and Game Vegetation Classification and Mapping Program
Contact's role point of contact


Contact information
Phone
Voice 916/327-5956

Address
e-mail address dhickson@dfg.ca.gov



Resource Maintenance

Resource maintenance
Update frequency not planned


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 2
M tolerance 2
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 7.11.2


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0566_20110609
* Object type composite
* Object count 150078



ArcGIS Feature Class Properties
Feature class name DS0566_20110609
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 150078
* Spatial index TRUE
* Linear referencing FALSE



Data Quality

Scope of quality information
Resource level dataset




Data quality report - Quantitative attribute accuracy
Measure description
From fall 2008 to fall 2010, around 60 different alliances and higher level map units were selected for field AA of the map. In all, 1,295 AA field surveys were collected to verify the map. Of these, 1,215 were included in the analysis, while 80 were removed because of incomplete information or significant change in the region/polygon. Despite every attempt to sample adequate numbers of all mapped types, 20 different map units had a sample size of n<5, resulting in approximately 67% of all map types with reportable results. For the assessed map units, the overall users' (field surveyors) accuracy averaged 85.1% and producers' (photo interpreters) accuracy averaged 80.2%. The broad distribution of these AA surveys and resulting accuracy are indications of the final map's validity. Since the preferred accuracy for fine-scale vegetation mapping products is 80%, the map met or exceeded these expectations in most cases. Those vegetation map units that did not meet the 80% expectation were further reviewed by AIS and additional changes were made to improve the final map product. Additionally, 100,000 acres were already mapped with around 275 AA field surveys collected for the Lassen Foothills area (Buck et al. 2009); thus, the map for this area was edge-matched with the surrounding northern foothills boundary to create one seamless map. See the following report for further description: Northern Sierra Nevada Foothills vegetation project: vegetation mapping report. (https://nrmsecure.dfg.ca.gov/FileHandler.ashx?DocumentID=31346&inline=1)




Lineage

Source data
Description
base imagery for vegetation delineations


Resolution of the source data
Scale denominator 0

Source citation
Title 2005 and 2009, summer 1 m color NAIP imagery
Alternate titles 2005 and 2009 NAIP imagery


Responsible party
Organization's name NATIONAL AGRICULTURE IMAGERY PROGRAM, Farm Services Agency, USDA
Contact's role originator


Resource location online
Location http://www.fsa.usda.gov/FSA/apfoapp?area=home&subject=prog&topic=nai



Extent of the source data
Description
ground condition
Temporal extent
Beginning date
Indeterminate date summer 2005
Ending date
Indeterminate date summer 2009



Geoprocessing history

Process
Date 2011-02-1014:45:35
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-06-0611:54:49
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\JoinField
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-06-0615:18:20
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\JoinField
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-06-0616:15:02
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\JoinField
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-06-0910:37:32
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-06-1312:12:41
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\Copy
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-07-2109:14:52
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-2115:44:26
Tool location c:\program files (x86)\arcgis\desktop10.1\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Distribution

Distributor
Contact information
Individual's name Diana Hickson
Organization's name DFG Vegetation Classification and Mapping Program
Contact's position Senior Botanist
Contact's role distributor


Contact information
Phone
Voice 916/327-5956

Address
e-mail address dhickson@dfg.ca.gov



Ordering process
Terms and fees none



Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/500_599/ds566.zip

Online source
Location http://bios.dfg.ca.gov/

Fields

Details for object DS0566_20110609
* Type Feature Class
* Row count 150078
Definition
Vegetation - Northern Sierra Nevada Foothills [ds566]


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 PI
* Alias PI
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
The code given to the alliance, group, macrogroup or mapping unit that was delineated. The vegetation of the area was classified to alliances and assocation levels, but sometimes coarser determinations were needed for photo interpretation.


Field DensityConifer
* Alias DensityConifer
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
0-98 total percentage of polygon covered by conifers; a value of 99 means the cover was uninterpretable due to landuse or overstory


Field DensityHardwood
* Alias DensityHardwood
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
0-98 total percentage of polygon covered by hardwoods; a value of 99 means the cover was uninterpretable due to landuse or overstory


Field DensityShrub
* Alias DensityShrub
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
0-98 total percentage of polygon covered by shrubs; a value of 99 means the cover was uninterpretable due to landuse or overstory


Field DensityHerbaceous
* Alias DensityHerbaceous
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
the cover class represent a range of cover of herbaceous plants
List of values
Value 0
Description Little or no cover


Value 1
Description <20% cover


Value 2
Description 20-40% cover


Value 3
Description >40% cover


Value 9
Description Not applicable/Not evaluated




Field Disturbance
* Alias Disturbance
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
how much of the polygon was covered by some sort of disturbance
List of values
Value 0
Description No Observable Disturbance: <5% of polygon affected


Value 1
Description Minimal Disturbance: 5-25% of polygon affected. Polygons adjacent to major disturbances are also


Value 2
Description Moderate Disturbance: 25-50% of polygon affected.


Value 3
Description High Disturbance: >50% of polygon affected


Value 4
Description Urban Disturbance: Polygon is built-up and contains associated structures


Value 5
Description Agriculture Disturbance: Polygon is under intensive agricultural use.


Value 9
Description Not applicable




Field Exotic
* Alias Exotic
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
how much of the polygon was influenced by invasive exotics
List of values
Value 0
Description No Observable Invasive Plant Component: <5% of polygon affected with invasive plants.


Value 1
Description Low Invasive Plant Content: 5-25% of polygon affected with invasive plants.


Value 2
Description Moderate Invasive Plant Content: 25-50% of polygon affected with invasive plants.


Value 3
Description High Invasive Plant Content: >50% of polygon affected with invasive plants.


Value 9
Description Not applicable




Field Comment
* Alias Comment
* Data type String
* Width 200
* Precision 0
* Scale 0




Field LandUse
* Alias LandUse
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
a code for land use types
List of values
Value 0
Description Not evaluated


Value 1000
Description Urban-Built-up


Value 2000
Description Agriculture




Field PIPO
* Alias PIPO
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
presence or absence of ponderosa pine
List of values
Value 0
Description No observable PiPo


Value 1
Description PiPo present


Value 9
Description Not applicable




Field ModalSize
* Alias ModalSize
* Data type String
* Width 5
* Precision 0
* Scale 0
Field description
Code for plant diameter.
List of values
Value 1
Description <1"


Value 2
Description 1-6"


Value 3
Description 6-11"


Value 4
Description 11-24"


Value 5
Description >24"


Value 6
Description >60% cover




Field ModalOverstoryHeight
* Alias ModalOverstoryHeight
* Data type SmallInteger
* Width 2
* Precision 5
* Scale 0
Field description
Code for vegetation height.
List of values
Value 1
Description < 0.5 meter


Value 2
Description 0.5-1 meters


Value 3
Description 1-2 meters


Value 4
Description 2-5 meters


Value 5
Description 5-10 meters


Value 6
Description 10-15 meters


Value 7
Description 15-20 meters


Value 8
Description 20-35 meters


Value 9
Description 35-50 meters


Value 10
Description >50 meters




Field ModuleName
* Alias ModuleName
* Data type String
* Width 20
* Precision 0
* Scale 0
Field description
Name assigned to one of the four modules in which the study area was divided.


Field Acres
* Alias Acres
* Data type Double
* Width 8
* Precision 38
* Scale 8




Field MAPUNIT
* Alias MapUnit
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
the name of the alliance, group, macrogroup or mapping unit that was delineated.


Field NVCS_NAME
* Alias NVCS_Name
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
the standardized name of the vegetation description used in the National Vegetation Classification System


Field NVCS_LEVEL
* Alias NVCS_Level
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The level of the National Vegetation Classification System Hierarchy that the vegetation type corresponds to
Description source
http://biology.usgs.gov/npsveg/nvcs.html


Field NVCS_MG
* Alias NVCS_MG
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The standardized name for the macrogroup within the National Vegetation Classification System.
Description source
http://biology.usgs.gov/npsveg/nvcs.html


Field NVCS_G
* Alias NVCS_G
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The standardized name for the group within the National Vegetation Classification System.
Description source
http://biology.usgs.gov/npsveg/nvcs.html


Field CWHR
* Alias CWHR
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
a cross walk to the California Wildlife Habitat Relationships system
Description source
http://www.dfg.ca.gov/biogeodata/cwhr/


Field CALVEG
* Alias CalVeg
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
a crosswalk to the CalVeg vegetation system
Description source
http://www.fs.fed.us/r5/rsl/projects/frdb/layers/ev_mid.html


Field G_RANK
* Alias G_Rank
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The global rarity rank of the plant community mapped (only for alliances and associations). G1 and S1: Fewer than 6 viable occurrences worldwide and/or 2000 acres; G2 and S2: 6-20 viable occurrences worldwide and/or 2000-10,000 acres; G3 and S3: 21-100 viable occurrences worldwide and/or 10,000-50,000 acres; G4 and S4: Greater than 100 viable occurrences worldwide and/or greater than 50,000 acres; G5 and S5: Community demonstrably secure due to secure worldwide and statewide abundance


Field S_RANK
* Alias S_Rank
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The state rarity rank of the plant community mapped (only for alliances and associations). G1 and S1: Fewer than 6 viable occurrences worldwide and/or 2000 acres; G2 and S2: 6-20 viable occurrences worldwide and/or 2000-10,000 acres; G3 and S3: 21-100 viable occurrences worldwide and/or 10,000-50,000 acres; G4 and S4: Greater than 100 viable occurrences worldwide and/or greater than 50,000 acres; G5 and S5: Community demonstrably secure due to secure worldwide and statewide abundance


Field CACODE
* Alias CaCode
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
California Natural Community Codes - unique code assigned to alliances and associations


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






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 2014-04-28


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata


Created in ArcGIS for the item 2014-03-0616:51:00
Last modified in ArcGIS for the item 2014-04-2813:15:27


Automatic updates
Have been performed Yes
Last update 2014-04-2813:15:27


Metadata Contacts

Metadata contact
Individual's name Rosie Yacoub
Organization's name CA Dept. of Fish and Game, Biogeographic Data Branch
Contact's role point of contact


Contact information
Phone
Voice 916-322-1990

Address
Type both
Delivery point 1807 13th Street, Suite 202
City Sacramento
Administrative area California
Postal code 95811
e-mail address ryacoub@dfg.ca.gov



Thumbnail and Enclosures

Thumbnail

Enclosure
Enclosure type File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc