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EMAP-West Landscape Metrics

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Publication_Date: Unknown
Title: wemap3k_atmetrics
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
Description:
Abstract:
The EMAP-West metrics were generated with an ArcView extension called ATtILA (Analytical Tools Interface for Landscape Assessments). The wemap3k_atmetrics dataset contains metric information from four metric groups; landscape characteristics, riparian characteristics, human stresses and physical characteristics.
Purpose:
Derived from the NLCD, DEM, DEM slope, roads, census block groups and streams datasets used in the ATtILA processing.
Supplemental_Information:
LANDSCAPE METRIC DESCRIPTIONS:

ALL METRIC CATEGORIES
Area - Total area in map units
Perimeter - Total perimeter in map units

LANDSCAPE CHARACTERISTICS
Land_area - Total terrestrial area in map units (total area minus water)
LC_overlap - Percent overlap between reporting unit and land cover themes
SL_LndArea - Total terrestrial area (total area minus water) in map units for the land cover/slope composite grid
SL_Overlap - Percent overlap between reporting unit and land cover/slope composite grid

Land cover proportions:
Pagc - Percentage of reporting unit that is crop land
Pagp - Percentage of reporting unit that is pasture
Pagt - Percentage of reporting unit that is all agricultural use
Pfor - Percentage of reporting unit that is forest
Pbar - Percentage of reporting unit that is barren
Png - Percentage of reporting unit that is natural grassland
Pshrb - Percentage of reporting unit that is shrubland
Purb - Percentage of reporting unit that is urban
Pwetl - Percentage of reporting unit that is wetland
N_index - Percentage of reporting unit that is all natural land use
U_index - Percentage of reporting unit that is all human land use
*Each of the above will also have a field with _A appended (e.g. Pfor_A) representing total area in map units.

Slope metrics:
AgcSL3 - Percentage of reporting unit that has agricultural crop land on slopes >= 3
AgpSL3 - Percentage of reporting unit that has agricultural pasture on slopes >= 3
AgtSL3 - Percentage of reporting unit that has any agricultural land use on slopes >= 3
*Each of the above will also have a field with _A appended (e.g. AgtSL3_A) representing total area in map units.

Patch metrics:
FNumber - Number of forest patches within the reporting unit
FAvgSize - Average size of forest patches within the reporting unit
FPatDens - Forest Patch density within the reporting unit (number of patches/km2)
FLargest - Size of largest forest patch within the reporting unit
F_PLGP - Proportion of largest forest patch to total area of forest within the reporting unit

Fedge210 - Percentage of reporting unit that is defined as edge forest
FCore210 - Percentage of reporting unit that is defined as core forest
FEA210 - Ratio of edge forest to area

Pff9 - Average forest connectivity within the reporting unit for user defined scale
PfPtch9 - Percentage of reporting unit that is patch forest class for user defined scale
PfTran9 - Percentage of reporting unit that is transitional forest class for user defined scale
PfEdge9 - Percentage of reporting unit that is edge forest class for user defined scale
PfPerf9 - Percentage of reporting unit that is perforated forest class for user defined scale
PfIntr9 - Percentage of reporting unit that is interior forest class for user defined scale
*User defined scale is a 9 by 9 window of grid cells.

Diversity measurements:
S - Simple diversity
H - Shannon-Weiner diversity
H_Prime - Standardized Shannon-Weiner diversity
C - Simpson index

RIPARIAN CHARACTERISTICS
RLA{n} - Land area within {n} map units of a stream
SLA{n} - Land area within {n} map units of a sample point
RO - Percent overlap of riparian zones and land cover

Riparian zone metrics:
Ragc0 - Percentage of stream length adjacent to cropland
Ragp0 - Percentage of stream length adjacent to pasture
Ragt0 - Percentage of stream length adjacent to all agricultural use
Rfor0 - Percentage of stream length adjacent to forest
Rhum0 - Percentage of stream length adjacent to all human land use
Rbar0 - Percentage of stream length adjacent to barren
Rnat0 - Percentage of stream length adjacent to all natural land use
Rng0 - Percentage of stream length adjacent to natural grassland
Rshrb0 - Percentage of stream length adjacent to shrubland
Rurb0 - Percentage of stream length adjacent to urban
Rwetl0 - Percentage of stream length adjacent to wetland

Each of the riparian metrics may have a number greater than 0 following the code to represent a buffer distance. For example, Rfor30 is the percentage of forest in a 30 (map units) stream buffer area. If the buffer distance was a real number, it is rounded to the nearest integer.

HUMAN STRESSORS
Land_area - Total terrestrial area in map units (total area minus water)
LC_overlap - Percent overlap between reporting unit and land cover themes
P_Load - Phosphorus loading (kg/ha/yr)
N_Load - Nitrogen loading (kg/ha/yr)
POPDENS - Population density reported as population count/area of reporting unit in km2
POP90 - Population count via area-weighted redistribution.
PCTIA_LC - Percentage of reporting unit composed of impervious cover, based on land use
RDDENS* - Road density reported as km of roads/area of reporting unit in km2
RDLEN* - Total road length in map units
PCTIA_RD - Percentage of reporting unit composed of impervious cover, based on road density

PHYSICAL CHARACTERISTICS
ELEVMIN - Minimum grid cell value within reporting unit
ELEVMAX - Maximum grid cell value within reporting unit
ELEVRNG - Range of grid cell value within reporting unit
ELEVMEAN - Average grid cell value within reporting unit
ELEVSTD - Standard deviation of grid cell value within reporting unit

SLPMIN - Minimum grid cell value within reporting unit
SLPMAX - Maximum grid cell value within reporting unit
SLPRNG - Range of grid cell value within reporting unit
SLPMEAN - Average grid cell value within reporting unit
SLPSTD - Standard deviation of grid cell value within reporting unit

STRMDENS* - Stream density reported as km of streams / area of reporting unit in km2
STRMLEN* - Total stream length in map units

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -126.403453
East_Bounding_Coordinate: -94.996662
North_Bounding_Coordinate: 49.629273
South_Bounding_Coordinate: 30.561255
Keywords:
Theme:
Theme_Keyword: ATtILA
Theme_Keyword: Metrics
Theme_Keyword: Landscape
Theme_Keyword: EMAP-West
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Daniel T. Heggem
Contact_Organization: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Contact_Position: Research Environmental Scientist
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 93478
City: Las Vegas
State_or_Province: NV
Postal_Code: 89193-3478
Country: USA
Contact_Voice_Telephone: (702) 798-2278
Contact_Electronic_Mail_Address: heggem.daniel@epamail.epa.gov
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.2.0.700

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Not presently available
Logical_Consistency_Report: Not presently available
Completeness_Report: Not presently available
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Not presently available
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Not presently available
Lineage:
Process_Step:
Process_Description:
The EMAP-West metrics were generated with the ArcView extension ATtILA utilizing the following state wide datasets as inputs; NLCD, DEM, DEM slope, roads, census block groups, streams, and 3 km square polygon reporting units. Each EMAP-West state (CA, MT, ID, NV, AZ, UT, CO, WA, OR, WY, NM, ND, SD) was processed individually and then all state 3 km square polygon reporting units were merged together to create the final west wide metric dataset.
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ed Evanson
Contact_Organization: Lockheed Martin Environmental Services
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: 1050 E. Flamingo Road, Suite E120
City: Las Vegas
State_or_Province: NV
Postal_Code: 89119
Country: USA
Contact_Voice_Telephone: (702) 897-3208
Contact_Electronic_Mail_Address: eevanson@lmepo.com

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 383929

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 34.000000
Standard_Parallel: 46.000000
Longitude_of_Central_Meridian: -110.000000
Latitude_of_Projection_Origin: 31.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.004096
Ordinate_Resolution: 0.004096
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: wemap3k_atmetrics
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:
Attribute_Label: PERIMETER
Attribute:
Attribute_Label: WEMAP3K_WA
Attribute:
Attribute_Label: WEMAP_ID
Attribute:
Attribute_Label: ROW
Attribute:
Attribute_Label: COL
Attribute:
Attribute_Label: WEMAP3KPTS
Attribute:
Attribute_Label: DTL_ST_W_
Attribute:
Attribute_Label: STATE_NAME
Attribute:
Attribute_Label: STATE_FIPS
Attribute:
Attribute_Label: STATE_ABBR
Attribute:
Attribute_Label: INWEMAPSTA
Attribute:
Attribute_Label: WA_3KCELL
Attribute:
Attribute_Label: WA_3KSEQ
Attribute:
Attribute_Label: ATILA_AREA
Attribute:
Attribute_Label: LC_OVERLAP
Attribute:
Attribute_Label: N_INDEX
Attribute:
Attribute_Label: N_INDEX_A
Attribute:
Attribute_Label: PFOR
Attribute:
Attribute_Label: PFOR_A
Attribute:
Attribute_Label: PWETL
Attribute:
Attribute_Label: PWETL_A
Attribute:
Attribute_Label: PURB
Attribute:
Attribute_Label: PURB_A
Attribute:
Attribute_Label: PAGP
Attribute:
Attribute_Label: PAGP_A
Attribute:
Attribute_Label: PAGC
Attribute:
Attribute_Label: PAGC_A
Attribute:
Attribute_Label: PAGT
Attribute:
Attribute_Label: PAGT_A
Attribute:
Attribute_Label: PBAR
Attribute:
Attribute_Label: PBAR_A
Attribute:
Attribute_Label: U_INDEX
Attribute:
Attribute_Label: U_INDEX_A
Attribute:
Attribute_Label: PSHRB
Attribute:
Attribute_Label: PSHRB_A
Attribute:
Attribute_Label: PNG
Attribute:
Attribute_Label: PNG_A
Attribute:
Attribute_Label: SL_OVERLAP
Attribute:
Attribute_Label: AGTSL3
Attribute:
Attribute_Label: AGTSL3_A
Attribute:
Attribute_Label: AGPSL3
Attribute:
Attribute_Label: AGPSL3_A
Attribute:
Attribute_Label: AGCSL3
Attribute:
Attribute_Label: AGCSL3_A
Attribute:
Attribute_Label: S
Attribute:
Attribute_Label: H
Attribute:
Attribute_Label: H_PRIME
Attribute:
Attribute_Label: C
Attribute:
Attribute_Label: FNUMBER
Attribute:
Attribute_Label: FPATDENS
Attribute:
Attribute_Label: FLARGEST
Attribute:
Attribute_Label: FAVGSIZE
Attribute:
Attribute_Label: PLGP
Attribute:
Attribute_Label: FEDGE210
Attribute:
Attribute_Label: FCORE210
Attribute:
Attribute_Label: FEA210
Attribute:
Attribute_Label: PFF9
Attribute:
Attribute_Label: PFPTCH9
Attribute:
Attribute_Label: PFTRAN9
Attribute:
Attribute_Label: PFEDGE9
Attribute:
Attribute_Label: PFPERF9
Attribute:
Attribute_Label: PFINTR9
Attribute:
Attribute_Label: SLPMIN
Attribute:
Attribute_Label: SLPMAX
Attribute:
Attribute_Label: SLPRANGE
Attribute:
Attribute_Label: SLPMEAN
Attribute:
Attribute_Label: SLPSTD
Attribute:
Attribute_Label: ELEVMIN
Attribute:
Attribute_Label: ELEVMAX
Attribute:
Attribute_Label: ELEVRANGE
Attribute:
Attribute_Label: ELEVMEAN
Attribute:
Attribute_Label: ELEVSTD
Attribute:
Attribute_Label: STRMLEN
Attribute:
Attribute_Label: STRMDENS
Attribute:
Attribute_Label: RDDENS
Attribute:
Attribute_Label: RDLEN
Attribute:
Attribute_Label: PCTIA_RD
Attribute:
Attribute_Label: POPDENS1
Attribute:
Attribute_Label: POP90
Attribute:
Attribute_Label: RAGC0
Attribute:
Attribute_Label: RAGC0_A
Attribute:
Attribute_Label: RURB0
Attribute:
Attribute_Label: RURB0_A
Attribute:
Attribute_Label: RFOR0
Attribute:
Attribute_Label: RFOR0_A
Attribute:
Attribute_Label: RHUM0
Attribute:
Attribute_Label: RHUM0_A
Attribute:
Attribute_Label: RAGP0
Attribute:
Attribute_Label: RAGP0_A
Attribute:
Attribute_Label: RNAT0
Attribute:
Attribute_Label: RNAT0_A
Attribute:
Attribute_Label: RBAR0
Attribute:
Attribute_Label: RBAR0_A
Attribute:
Attribute_Label: RAGT0
Attribute:
Attribute_Label: RAGT0_A
Attribute:
Attribute_Label: RSHRB0
Attribute:
Attribute_Label: RSHRB0_A
Attribute:
Attribute_Label: RNG0
Attribute:
Attribute_Label: RNGO_A
Attribute:
Attribute_Label: RWETL0
Attribute:
Attribute_Label: RWETL0_A
Attribute:
Attribute_Label: RLA_0
Attribute:
Attribute_Label: RAGC30
Attribute:
Attribute_Label: RAGC30_A
Attribute:
Attribute_Label: RURB30
Attribute:
Attribute_Label: RURB30_A
Attribute:
Attribute_Label: RFOR30
Attribute:
Attribute_Label: RFOR30_A
Attribute:
Attribute_Label: RHUM30
Attribute:
Attribute_Label: RHUM30_A
Attribute:
Attribute_Label: RAGP30
Attribute:
Attribute_Label: RAGP30_A
Attribute:
Attribute_Label: RNAT30
Attribute:
Attribute_Label: RNAT30_A
Attribute:
Attribute_Label: RBAR30
Attribute:
Attribute_Label: RBAR30_A
Attribute:
Attribute_Label: RAGT30
Attribute:
Attribute_Label: RAGT30_A
Attribute:
Attribute_Label: RSHRB30
Attribute:
Attribute_Label: RSHRB30_A
Attribute:
Attribute_Label: RNG30
Attribute:
Attribute_Label: RNG30_A
Attribute:
Attribute_Label: RWETL30
Attribute:
Attribute_Label: RWETL30_A
Attribute:
Attribute_Label: RLA_30
Attribute:
Attribute_Label: RAGC120
Attribute:
Attribute_Label: RAGC120_A
Attribute:
Attribute_Label: RURB120
Attribute:
Attribute_Label: RURB120_A
Attribute:
Attribute_Label: RFOR120
Attribute:
Attribute_Label: RFOR120_A
Attribute:
Attribute_Label: RHUM120
Attribute:
Attribute_Label: RHUM120_A
Attribute:
Attribute_Label: RAGP120
Attribute:
Attribute_Label: RAGP120_A
Attribute:
Attribute_Label: RNAT120
Attribute:
Attribute_Label: RNAT120_A
Attribute:
Attribute_Label: RBAR120
Attribute:
Attribute_Label: RBAR120_A
Attribute:
Attribute_Label: RAGT120
Attribute:
Attribute_Label: RAGT120_A
Attribute:
Attribute_Label: RSHRB120
Attribute:
Attribute_Label: RSHRB120_A
Attribute:
Attribute_Label: RNG120
Attribute:
Attribute_Label: RNG120_A
Attribute:
Attribute_Label: RWETL120
Attribute:
Attribute_Label: RWETL120_A
Attribute:
Attribute_Label: RLA_120
Attribute:
Attribute_Label: LC_OV
Attribute:
Attribute_Label: LANDAREA
Attribute:
Attribute_Label: P_LOAD
Attribute:
Attribute_Label: N_LOAD
Attribute:
Attribute_Label: PCTIA_LC
Attribute:
Attribute_Label: PCTIA_LC_A

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Daniel T. Heggem
Contact_Organization: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Contact_Position: Research Environmental Scientist
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 93478
City: Las Vegas
State_or_Province: NV
Postal_Code: 89193-3478
Country: USA
Contact_Voice_Telephone: (702) 798-2278
Contact_Electronic_Mail_Address: heggem.daniel@epamail.epa.gov
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 597.689

Metadata_Reference_Information:
Metadata_Date: 20050413
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Daniel T. Heggem
Contact_Organization: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Contact_Position: Research Environmental Scientist
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 93478
City: Las Vegas
State_or_Province: NV
Postal_Code: 89193-3478
Country: USA
Contact_Voice_Telephone: (702) 798-2278
Contact_Electronic_Mail_Address: heggem.daniel@epamail.epa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
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