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Data format: ArcInfo Coverage File or table name: wiwui Coordinate system: Albers Conical Equal Area Theme keywords: Wildland Urban Interface, WUI, wildfire, fragmentation, sprawl |
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Abstract:
The Wildland-Urban Interface (WUI) is the area where houses meet or intermingle with undeveloped wildland vegetation. This makes the WUI a focal area for human-environment conflicts such as wildland fires, habitat fragmentation, invasive species, and biodiversity decline. Using geographic information systems (GIS), we integrated U.S. Census and USGS National Land Cover Data, to map the Federal Register definition of WUI (Federal Register 66:751, 2001). These data are useful within a GIS for mapping and analysis at national, state, and local levels. |
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Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
The Wildland-Urban Interface (WUI) is the area where houses meet or intermingle with undeveloped wildland vegetation. This makes the WUI a focal area for human-environment conflicts such as wildland fires, habitat fragmentation, invasive species, and biodiversity decline. Using geographic information systems (GIS), we integrated U.S. Census and USGS National Land Cover Data, to map the Federal Register definition of WUI (Federal Register 66:751, 2001). These data are useful within a GIS for mapping and analysis at national, state, and local levels.
To provide a spatially detailed national assessment of the Wildland Urban Interface (WUI) across the coterminous U.S. to support inquiries into the effects of housing growth on the environment, and to inform both national policy and local land management concerning the WUI and associated issues.
ground condition
None. Acknowledgment of the USDA Forest Service North Central Research Station in products, presentations, and publications utilizing these data would be appreciated.
Topology maintained by ArcInfo. All fuzzy tolerances during processing were set to 0.00000001 to prevent data loss.
U.S. Census TIGER block polygons and associated 2000 housing density. Census Block housing density obtained from Summary Tape File 1 available from the U.S. Census Bureau.
1992 National Land Cover Data integrated into TIGER block geography using ArcInfo GRID ZONALSUM. FOREST (NLCD classes 41, 42, and 43) and VEGETATION (NLCD classes 33, 41, 42, 43, 51, 71, 91, and 92) items calculated by summing the percentages of the respective NLCD classes.
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Internal feature number.
ESRI
Feature geometry.
ESRI
Area of feature in internal units squared.
ESRI
Perimeter of feature in internal units.
ESRI
Internal feature number.
ESRI
User-defined feature number.
ESRI
A unique number assigned to Census Blocks concatenated from State, County, Tract, and Block, and Water fields from UA Census 2000 TIGER. The Census Bureau defines a block as “the smallest geographic area for which the Bureau of the Census collects and tabulates decennial census data, [and] are formed by streets, roads, railroads, streams and other bodies of water, other visible and cultural features, and the legal boundaries shown on Census Bureau maps (US Census Bureau, 1994).
2000 block-scale housing density (units per sq. km).
2000 water flag (1=water, 0=not water)
% of block covered by NLCD code 11 (see Entity Attribute Overview Description)
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
see zsum11pc and Entity Attribute Overview Description
% of block containing any of NLCD codes 41,42, or 43
% of block containing any of NLCD codes 33,41,42,43,51,71,91,or 92.
Wildland Urban Interface (WUI) classification
Housing density >= 6.177635 and < 49.42108, Vegetation <= 50%, within 2.414 km of area with >= 75% Vegetation
Housing density >= 49.42108 and < 741.3162, Vegetation <= 50%, within 2.414 km of area with >= 75% Vegetation
Housing density >=741.3162, Vegetation <= 50%, within 2.414 km of area with >= 75% Vegetation
Housing density > 0 and < 6.177635, Vegetation > 50%
Housing density >= 6.177635 and < 49.42108, Vegetation > 50%
Housing density >= 49.42108 and < 741.3162, Vegetation > 50%
Housing density >= 741.3162, Vegetation > 50%
Housing density = 0, Vegetation <= 50%
Housing density = 0, Vegetation > 50%
Housing density > 0 and < 6.177635, Vegetation <= 50%
Housing density >= 6.177635 and < 49.42108, Vegetation <= 50%
Housing density >= 49.42108 and < 741.3162, Vegetation <= 50%
Housing density >= 741.3162, Vegetation <= 50%
Water00 = 1
Numeric code for WUIFAC00
Low_Dens_Interface
Med_Dens_Interface
High_Dens_Interface
Wildland_Intermix
Low_Dens_Intermix
Med_Dens_Intermix
High_Dens_Intermix
Uninhabited_NoVeg
Wildland_NoVeg
Low_Dens_NoVeg
Med_Dens_NoVeg
High_Dens_NoVeg
Uninhabited_Veg
Water
Spatial objects (features) do not model any real world entities. Spatial objects (features) can be thought of as uniform areas of housing density and landcover, which have been assigned a Wildland Urban Interface classification. Items pertaining to National Land Cover Data (NLCD) make use of the following enumerated domain: Water - All areas of open water or permanent ice/snow cover. 11. Open Water - areas of open water, generally with less than 25 percent or greater cover of water (per pixel). 12. Perennial Ice/Snow - All areas characterized by year-long cover of ice and/or snow. Developed - areas characterized by high percentage (approximately 30% or greater) of constructed materials (e.g. asphalt, concrete, buildings, etc). 21. Low Intensity Residential - Includes areas with a mixture of constructed materials and vegetation. Constructed materials account for 30-80 percent of the cover. Vegetation may account for 20 to 70 percent of the cover. These areas most commonly include single-family housing units. Population densities will be lower than in high intensity residential areas. 22. High Intensity Residential - Includes heavily built up urban centers where people reside in high numbers. Examples include apartment complexes and row houses. Vegetation accounts for less than 20 percent of the cover. Constructed materials account for 80-100 percent of the cover. 23. Commercial/Industrial/Transportation - Includes infrastructure (e.g. roads, railroads, etc.) and all highways and all developed areas not classified as High Intensity Residential. Barren - Areas characterized by bare rock, gravel, sand, silt, clay, or other earthen material, with little or no "green" vegetation present regardless of its inherent ability to support life. Vegetation, if present, is more widely spaced and scrubby than that in the "green" vegetated categories; lichen cover may be extensive. 31. Bare Rock/Sand/Clay - Perennially barren areas of bedrock, desert, pavement, scarps, talus, slides, volcanic material, glacial debris, and other accumulations of earthen material. 32. Quarries/Strip Mines/Gravel Pits - Areas of extractive mining activities with significant surface expression. 33. Transitional - Areas of sparse vegetative cover (less than 25 percent that are dynamically changing from one land cover to another, often because of land use activities. Examples include forest clearcuts, a transition phase between forest and agricultural land, the temporary clearing of vegetation, and changes due to natural causes (e.g. fire, flood, etc.) Forested Upland - Areas characterized by tree cover (natural or Semi-natural woody vegetation, generally greater than 6 meters tall); Tree canopy accounts for 25-100 percent of the cover. 41. Deciduous Forest - Areas dominated by trees where 75 percent or more of the tree species shed foliage simultaneously in response to seasonal change. 42. Evergreen Forest - Areas characterized by trees where 75 percent or more of the tree species maintain their leaves all year. Canopy is never without green foliage. 43. Mixed Forest - Areas dominated by trees where neither deciduous nor evergreen species represent more than 75 percent of the cover present. Shrubland - Areas characterized by natural or semi-natural woody vegetation with aerial stems, generally less than 6 meters tall with individuals or clumps not touching to interlocking. Both evergreen and deciduous species of true shrubs, young trees, and trees or shrubs that are small or stunted because of environmental conditions are included. 51. Shrubland - Areas dominated by shrubs; shrub canopy accounts for 25-100 percent of the cover. Shrub cover is generally greater than 25 percent when tree cover is less than 25 percent. Shrub cover may be less than 25 percent in cases when the cover of other life forms (e.g. herbaceous or tree) is less than 25 percent and shrubs cover exceeds the cover of the other life forms. Non-natural Woody - Areas dominated by non-natural woody vegetation; non-natural woody vegetative canopy accounts for 25-100 percent of the cover. The non-natural woody classification is subject to the availability of sufficient ancillary data to differentiate non-natural woody vegetation from natural woody vegetation. 61. Orchards/Vineyards/Other - Orchards, vineyards, and other areas planted or maintained for the production of fruits, nuts, berries, or ornamentals. Herbaceous Upland - Upland areas characterized by natural or semi- natural herbaceous vegetation; herbaceous vegetation accounts for 75-100 percent of the cover. 71. Grasslands/Herbaceous - Areas dominated by upland grasses and forbs. In rare cases, herbaceous cover is less than 25 percent, but exceeds the combined cover of the woody species present. These areas are not subject to intensive management, but they are often utilized for grazing. Planted/Cultivated - Areas characterized by herbaceous vegetation That has been planted or is intensively managed for the production of food, feed, or fiber; or is maintained in developed settings for specific purposes. Herbaceous vegetation accounts for 75-100 percent of the cover. 81. Pasture/Hay - Areas of grasses, legumes, or grass-legume mixtures planted for livestock grazing or the production of seed or hay crops. 82. Row Crops - Areas used for the production of crops, such as corn, soybeans, vegetables, tobacco, and cotton. 83. Small Grains - Areas used for the production of graminoid crops such as wheat, barley, oats, and rice 84. Fallow - Areas used for the production of crops that are temporarily barren or with sparse vegetative cover as a result of being tilled in a management practice that incorporates prescribed alternation between cropping and tillage. 85. Urban/Recreational Grasses - Vegetation (primarily grasses) planted in developed settings for recreation, erosion control, or aesthetic purposes. Examples include parks, lawns, golf courses, airport grasses, and industrial site grasses. Wetlands - Areas where the soil or substrate is periodically saturated with or covered with water as defined by Cowardin et al. 91. Woody Wetlands - Areas where forest or shrubland vegetation accounts for 25-100 percent of the cover and the soil or substrate is periodically saturated with or covered with water. 92. Emergent Herbaceous Wetlands - Areas where perennial herbaceous vegetation accounts for 75-100 percent of the cover and the soil or substrate is periodically saturated with or covered with water.
No warranty, expressed or implied, is made by the U.S. Forest Service or the University of Wisconsin-Madison regarding the use of these data, nor does the act of distribution constitute any such warranty.
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