Soil and Vegetation Survey of the Gulkana River Area, Alaska - Vegetation Part - Polygon Data

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Darrell Kautz

Publication_Date: 1999

Title:

Soil and Vegetation Survey of the Gulkana River Area, Alaska - Vegetation Part - Polygon Data

Geospatial_Data_Presentation_Form: Map

Publication_Information:

Publication_Place: Wasilla, Alaska

Publisher:

United States Department of Agriculture, Natural Resources Conservation Service

Description:

Purpose:

This data set depicts existing vegetation conditions within the Wild and Scenic River corridor of the Gulkana River Area, Alaska in 1995.

Abstract:

This data set is part of a detailed Soil and Vegetation Survey of the Gulkana River area, Alaska. The survey was a cooperative effort of USDA NRCS and USDI BLM as part of the National Cooperative Soil Survey program. The data was developed using a combination of stereoscopic interpretation of CIR aerial photography and transecting selected delineations to gather supporting documentation and ground truth line placement. The line work was transferred to mylar overlays to orthophotography for scanning. Data are geo-referenced and include selected attribute data. The vegetation map units displayed on the maps are composed of one or more vegetation cover types. Vegetation cover type classification was developed from stand data collected during field transects. Suitability ratings for selected habitat elements for moose, caribou, and grizzly bear were assigned to each vegetation cover type. NRCS was responsible for survey design and methodology, mapping, data collection and analysis, and publication of the geographic data sets. BLM provided orthophotography and digitizing support and developed the wildlife habitat suitability ratings.

Supplemental_Information:

Three additional digital map sets were developed in conjunction with the Soil and Vegetation Survey of the Gulkana River, Alaska. Other layers are subtitled "Soils Part - Polygon Data," "Soils Part - Line segment Data," and "Vegetation Part - Line Segment Data." A detailed written report and printed map sheets was produced as part of the survey. Written documentation includes descriptions of ecological unit, soil, and vegetation map units; descriptions of the soil taxonomic units and vegetation cover types; and a detailed description of field and office procedures used during the survey. Interpretations for use and management of the area for recreation and wild life habitat are included also.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1992

Ending_Date: 1995

Currentness_Reference: Field Work Completed

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None Planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -143.7409

East_Bounding_Coordinate: -141.110

North_Bounding_Coordinate: 62.9797

South_Bounding_Coordinate: 62.5199

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Vegetation inventory

Theme_Keyword: Vegetation cover type map

Theme_Keyword: Wildlife habitat

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Gulkana River

Place_Keyword: Gulkana Quadrangle

Place_Keyword: Alaska

Access_Constraints: NONE

Use_Constraints:

United States Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from this data. This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. The data is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than the original mapping can cause misinterpretation of the data. If enlarged, maps do not show the small areas of contrasting vegetation that could have been shown at a larger scale. The depicted map unit boundaries, map unit descriptions, and interpretations do not eliminate the need for onsite sampling, testing, and detailed study of specific sites for intensive uses. Thus, these data and their interpretations are intended for planning purposes only.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

United States Department of Agriculture, Natural Resources Conservation Service

Contact_Person: Darrell Kautz

Contact_Position: Plant Ecologist

Contact_Address:

Address_Type: mailing and physical address

Address: 351 W. Parks Hwy, Suite 200

City: Wasilla

State_or_Province: AK

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: 907-373-6491

Contact_Facsimile_Telephone: 907-373-7192

Contact_Electronic_Mail_Address: darrell.kautz@ak.usda.gov

Hours_of_Service: 8 am - 5 pm AST

Native_Data_Set_Environment: Arc/Info

 

 

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Digital maps were tested by manual comparison of the source with hard copy plots. In addition, the attributes were tested against a master set of valid attributes. All attribute data conform to the attribute descriptions in the written manuscript and tabular datasets.

Logical_Consistency_Report:

All internal polygons were tested for closure with vendor software and were checked against hard copy plots. All data were checked for common lines (adjacent polygons with the same label).

Completeness_Report: Complete

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The accuracy of these digital data is based upon their compilation to base maps that meet USDA NRCS National Cooperative Soil Survey National Map Accuracy Standards. The difference in positional accuracy between the vegetation map unit boundaries in the field and their digitized map locations is unknown. The locational accuracy of vegetation map unit delineations on the ground varies with the transition between map units. Delineation boundaries generally were digitized within 0.05 inch of their location on the digitized source.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: unknown

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: BLM

Title: Various Orthophoto Enlargements of the Gulkana River Corridor.

Publication_Date: 1986

Source_Contribution: Base maps used to compile field linework.

Source_Scale_Denominator: 24000

Type_of_Source_Media: Mylar

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1986

Source_Currentness_Reference: none

Source_Citation_Abbreviation: ORTHOS

Process_Step:

Process_Description:

Manual rubbersheeting of field work to a rectified orthophoto base

Source_Used_Citation_Abbreviation: RBB

Process_Date: 1998

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Organization:

United States Department of Agriculture, Natural Resources Conservation Service

Contact_Person: Ted Cox

Contact_Position: GIS Coordinator

Contact_Address:

Address_Type: mail

Address: 351 W. Parks Hwy, Suite 101

City: Wasilla

State_or_Province: Alaska

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: 907 373 6493

Contact_Facsimile_Telephone: 907-373-7192

Contact_Electronic_Mail_Address: ted.cox@ak.usda.gov

Hours_of_Service: 8am - 5pm AST

 

 

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 1920

 

 

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Longitude_of_Central_Meridian: -154

Latitude_of_Projection_Origin: 50.000

Standard_Parallel: 55

False_Easting: 0.00000

False_Northing: 0.00000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: Coordinate pair

Coordinate_Representation:

Abscissa_Resolution: .61

Ordinate_Resolution: .61

Planar_Distance_Units: METERS

Geodetic_Model:

Horizontal_Datum_Name: North American Datum 1927

Ellipsoid_Name: CLARKE1866

Semi-major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.98

 

 

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Vegetation map unit delineations are closed polygons or line segments. In most cases, a map unit consists of a mixture of two or more vegetation cover types. Occasionally, a map unit may be dominated by a single vegetation cover type. A map unit symbol uniquely identifies each polygon or line segment. The map unit symbol provides a link to the map unit name, map unit description, specific vegetation cover types, and cover type descriptions in the written documentation.

Table - vege.txt 
Position,Column,Description 
1,Vege-id,Unique polygon ID; ArcInfo internal record; polygon data set 
2,Vege_code,Vegetation map unit publication symbol (links to vegemu.txt and vegecomp.txt) 
3,Acres,Vegetation polygon acres

Table - vegerip.txt 
Position,Column,Description 
1,Vegerip-id,Line segment ID; ArcInfo internal record; line segment data set 
2,Vege_code,Vegetation map unit publication symbol (links to vegemu.txt and vegecomp.txt)

Table - vegemu.txt 
Position,Column,Description 
1,Vege_code,Vegetation map unit publication symbol (links to vege.txt, vegerip.txt, and vegecomp.txt) 
2,VegMuName,Vegetation map unit name 
3,VegElevL,Elevation in feet; approximate lower limit 
4,VegElevU,Elevation in feet; approximate upper limit

Table - vegecomp.txt 
Position,Column,Description 
1,Vege_code,Vegetation map unit publication symbol (links to vege.txt, vegerip.txt, and vegemu.txt) 
2,VegCoName,Vegetation map unit component name 
3,VegCoPct,Representative percent composition of component 
4,Msummer,Moose summer range 
5,Mwinter,Moose winter range 
6,Mrepro,Moose reproduction habitat 
7,Csummer,Caribou summer range 
8,Cwinter,Caribou summer range 
9,Ccalving,Caribou calving range 
10,Gsprsum,Grizzly bear spring-summer habitat 
11,Gsumfal,Grizzly bear summer-fall habitat 
12,Gdenning,Grizzly bear denning sites

Entity_and_Attribute_Detail_Citation: none

Detailed_Description:

Entity_Type:

Entity_Type_Label: vege.pat

Entity_Type_Definition: Polygon Attribute Table

Entity_Type_Definition_Source: None

Attribute:

Attribute_Label: Area

Attribute_Definition: Area of polygon

Attribute_Definition_Source: Software computed

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 501

Range_Domain_Maximum: 9514419

Attribute:

Attribute_Label: Perimeter

Attribute_Definition: Perimeter of polygon

Attribute_Definition_Source: Software computed

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 88

Range_Domain_Maximum: 417333

Attribute:

Attribute_Label: vege#

Attribute_Definition: Internal feature number

Attribute_Definition_Source: Software computed

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2

Range_Domain_Maximum: 2092

Attribute:

Attribute_Label: vege-id

Attribute_Definition: Feature identification number

Attribute_Definition_Source: User Defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 2091

Attribute:

Attribute_Label: Vege_code

Attribute_Definition: Vegetation map unit publication symbol

Attribute_Definition_Source: User Defined

Attribute_Domain_Values:

Unrepresentable_Domain: Character field

Attribute:

Attribute_Label: Acres

Attribute_Definition: Acres calculated from area field

Attribute_Definition_Source: User Defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.12

Range_Domain_Maximum: 2351

 

 

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

United States Department of Agriculture, Natural Resources Conservation Service

Contact_Person: Darrell Kautz

Contact_Position: Plant Ecologist

Contact_Address:

Address_Type: mailing and physical address

Address: 351 W. Parks Hwy, Suite 200

City: Wasilla

State_or_Province: Alaska

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: 907 373 6491

Contact_Facsimile_Telephone: 907 373 7192

Contact_Electronic_Mail_Address: darrell.kautz@ak.usda.gov

Hours_of_Service: 8 - 5 pm AST

Resource_Description: Vegetation Inventory

Distribution_Liability:

Although these data have been processed successfully on a computer system at the United States Department of Agriculture, no warranty expressed or implied is made by NRCS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. The United States Department of Agriculture, nor any of its agencies are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets. The United States Department of Agriculture prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, and marital or familial status. (Not all prohibited bases apply to all programs.)

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Arc/Info Export .e00

Transfer_Size: 7.3 Megabytes

Digital_Transfer_Option:

Offline_Option:

Offline_Media: CDROM

Recording_Format: UNIX

Compatibility_Information:

ISO 9660 format allows the CDROM to be read by most computer operating systems.

Fees: none

 

 

Metadata_Reference_Information:

Metadata_Date: 19990419

Metadata_Review_Date: 19990430

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA/NRCS

Contact_Person: Ted E. Cox

Contact_Position: GIS Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 351 W. Parks Hwy, Suite 101

City: Wasilla

State_or_Province: AK

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: 907-373-6493

Contact_Facsimile_Telephone: 907-373-7192

Contact_Electronic_Mail_Address: ted.cox@ak.usda.gov

Hours_of_Service: 8am - 5pm AST

Metadata_Standard_Name: FGDC CSDGM

Metadata_Standard_Version: FGDC-STD-001-1998

 

 

Generated by mp version 2.3.6 on Mon May 3 10:58:36 1999

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