Abstract

This is a vector dataset describing basal area (ft²/acre), tree stem density (stems/acre), canopy cover (%), and dominant overstory vegetation in USDA Forest Service stand polygons, across the western Mogollon Plateau in Arizona.

Purpose

The data contained in this layer were created as part of the Forest Ecosystem Restoration Analysis (ForestERA) project to support landscape-scale forest restoration planning efforts by a broad group of stakeholders including federal and state agencies, academic institutions, and non-governmental entities. Specifically, this layer was designed to meet the needs of the USDA Forest Service and other federal agencies that use forest service stand polygons as management and analysis units. These data are intended for regional analyses over spatial extents on the order of tens to hundreds of thousands of acres, and were not developed for use at finer spatial scales, although they may be useful for some applications at finer scales.

Supplementary Information

This dataset was produced using zonal statistics in ArcGIS spatial analyst using USDA Forest Service stand polygons as zones to summarize 90m raster datasets created by the Forest Ecosystem Restoration Analysis (ForestERA) project. These raster datasets, representing basal area (m²/ha), stand density (trees / ha), canopy cover (%), and dominant overstory vegetation were created by the ForestERA project for the western Mogollon Plateau. The original vector dataset containing the forest stand boundaries was created by merging USDA Forest Service vector datasets in ArcGIS. Stand boundaries from the Coconino, Kaibab, Tonto, and Apache-Sitgreaves National Forests, that fell within the ForestERA western Mogollon Plateau assessment area were combined into a single vector dataset. Additional polygons were added which cover areas, such as parcels of private land, that fall within the western Mogollon Plateau study area but were not included in the Forest Service datasets.

The attributes included for basal area (BA), tree stem density (TD), and canopy cover (CC), were mean (MEAN), maximum (MAX), minimum (MIN), and standard deviation (STD), of the values for the 90m cells that overlapped each stand polygon. For the dominant overstory vegetation type field in the vector dataset we used the vegetation class with the highest number of cells that overlapped the stand polygon (DOMVEG). We also included the percentage of cells of each vegetation type as attributes in the table for the stand polygons.

We did not undertake an accuracy assessment of this layer. Details on the accuracy and uncertainty of the original raster datasets may be obtained from the metadata files included with those layers.

These data are intended for regional analyses over spatial extents on the order of tens to hundreds of thousands of acres, and were not developed for use at finer spatial scales, although they may be useful for some applications at those finer scales.

_________________

Status of the data

Complete
Data update frequency: None planned

Time period for which the data is relevant

Date and time: 2000
Description:
publication date

Publication Information

Who created the data: Forest Ecosystem Restoration Analysis Project

Date and time: December 1, 2004
_________________

Data storage and access information

File name: foreststand
Type of data: vector digital data

Location of the data:
\\ENVSCI41\Shared\metadata_layers\foreststand
Data processing environment: Microsoft Windows 2000 Version 5.0 (Build 2195)
Service Pack 4; ESRI ArcCatalog 8.1.2.671

Accessing the data

Size of the data: 49.659 MB
Data transfer size: 49.659 MB

Constraints on accessing and using the data

Access constraints: This layer may be accessed by any interested party. It is
provided by the Forest Ecosystem Restoration Analysis project, the Ecological
Restoration Institute (ERI), and Northern Arizona University (NAU).

Use constraints: This layer is provided for public use by the ForestERA project, ERI, and NAU. Reports, presentations, and publications in which this layer is presented or
used for analytical purposes should acknowledge the ForestERA project.

Details about this document

Contents last updated: 20040421 at time 14425800

Who completed this document

Forest Ecosystem Restoration Analysis Project
Center For Environmental Sciences and Education:
Northern Arizona University
Flagstaff, Arizona 86011-5694
United States
928-523-0068 (voice)
928-523-7423 (fax)

Contact Instructions:

Contact Dr. Thomas D. Sisk or the Forest Ecosystem Restoraton Analysis Project.

Standards used to create this document

Standard name: FGDC Content Standards for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention used in this document: local time
Metadata profiles defining additonal information
ESRI Metadata Profile: http://www.esri.com/metadata/esriprof80.html

Horizontal coordinate system

Projected coordinate system name: NAD_1927_UTM_Zone_12N
Geographic coordinate system name: Clarke 1866
Details
Grid Coordinate System Name: Universal Transverse Mercator
UTM Zone Number: 12
Transverse Mercator Projection
Scale Factor at Central Meridian: 0.999600
Longitude of Central Meridian: -111.000000
Latitude of Projection Origin: 0.000000
False Easting: 500000.000000
False Northing: 0.000000

Planar Coordinate Information

Planar Distance Units: meters
Coordinate Encoding Method: coordinate pair
Coordinate Representation
Abscissa Resolution: 0.000072
Ordinate Resolution: 0.000072

Geodetic Model

Horizontal Datum Name: North American Datum of 1927
Ellipsoid Name: Clarke 1866
Semi-major Axis: 6378206.400000
Denominator of Flattening Ratio: 294.978698
_________________

Bounding coordinates

Horizontal
In decimal degrees
West: -112.319321
East: -110.607260
North: 35.520932
South: 34.192759
In projected or local coordinates
Left: 380360.739933
Right: 535610.740078
Top: 3930615.82162
Bottom: 3784095.821873
_________________

Spatial data description

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Complete chain

Point_and_Vector_Object_Count: 99179

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Label point

Point_and_Vector_Object_Count: 34059

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 34059

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 4

Attribute Information

Detailed_Description:

Entity_Type:

Entity_Type_Label: foreststand.aat

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: FNODE#

Attribute_Definition: Internal node number for the beginning of an arc (from-node).

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: TNODE#

Attribute_Definition: Internal node number for the end of an arc (to-node).

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: LPOLY#

Attribute_Definition: Internal node number for the left polygon.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: RPOLY#

Attribute_Definition: Internal node number for the right polygon.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: LENGTH

Attribute_Definition: Length of feature in internal units.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: FORESTSTAND#

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: FORESTSTAND-ID

Attribute_Definition: User-defined feature number.

Attribute_Definition_Source: ESRI

Detailed_Description:

Entity_Type:

Entity_Type_Label: foreststand.pat

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: AREA

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: PERIMETER

Attribute_Definition: Perimeter of feature in internal units.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: FORESTSTAND#

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: FORESTSTAND-ID

Attribute_Definition: User-defined feature number.

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: GISLINK2

Attribute:

Attribute_Label: VEGID

Attribute:

Attribute_Label: FOREST

Attribute:

Attribute_Label: ACRES

Attribute:

Attribute_Label: BA_MIN

Attribute:

Attribute_Label: BA_MAX

Attribute:

Attribute_Label: BA_MEAN

Attribute:

Attribute_Label: BA_STD

Attribute:

Attribute_Label: CC_MIN

Attribute:

Attribute_Label: CC_MAX

Attribute:

Attribute_Label: CC_MEAN

Attribute:

Attribute_Label: CC_STD

Attribute:

Attribute_Label: TD_MIN

Attribute:

Attribute_Label: TD_MAX

Attribute:

Attribute_Label: TD_MEAN

Attribute:

Attribute_Label: TD_STD

Attribute:

Attribute_Label: DOMVEG

Attribute:

Attribute_Label: OPEN

Attribute:

Attribute_Label: PJ

Attribute:

Attribute_Label: JUNIPINE

Attribute:

Attribute_Label: PINEOAK

Attribute:

Attribute_Label: PIPO

Attribute:

Attribute_Label: PINEASP

Attribute:

Attribute_Label: ASPEN

Attribute:

Attribute_Label: MCASPEN

Attribute:

Attribute_Label: MIXEDCON

Page last updated February 11, 2005