{ "currentVersion": 11.3, "cimVersion": "3.3.0", "id": 40, "name": "Meadow - UC Davis USFS", "type": "Feature Layer", "description": "
Brief Methods: <\/SPAN><\/SPAN><\/P> UC Davis compiled the \u201cbest available\u201d meadow polygon layers into a single data layer. Data layers were collected from various agencies, individuals, and organizations. Data layer quality varied based on compilation methods and age; some layers were excluded due to poor data quality. A confidence rank (1 = low, 10 = high) was assigned to the remaining layers which were rasterized at a 10m resolution. The layers were combined and combined raster cells with a summed rank of 2 or less were excluded. Raster cells representing open water were also excluded. A majority filter was run on the resulting remaining cells to reduce boundary heterogeneity, which replaced cell values based on the majority of the eight neighboring cells. Individual meadow polygons were created through a raster to vector conversion that treated all contiguous cells as a single part meadow feature with boundaries smoothed using the Polynomial Approximation with Exponential Kernel (PAEK) method (20 m tolerance to reduce edge complexity). Polygons with an area less than 0.4 ha (< 1 acre) were removed from the final meadow composite. Original IDs and other attributes were attached to the meadow polygons. <\/SPAN><\/SPAN><\/P> Meadow Polygon Attributes <\/SPAN><\/SPAN><\/P> Field<\/SPAN><\/SPAN><\/P><\/TD> Description<\/SPAN><\/SPAN><\/P><\/TD><\/TR> STATE<\/SPAN><\/SPAN><\/P><\/TD> State in which the meadow is located (CA or NV)<\/SPAN><\/SPAN><\/P><\/TD><\/TR> ID*<\/SPAN><\/SPAN><\/P><\/TD> Unique meadow identifier UCDSNMxxxxxx<\/SPAN><\/SPAN><\/P> *Note: IDs are nonsequential* <\/SPAN><\/SPAN><\/P><\/TD><\/TR> HUC12<\/SPAN><\/SPAN><\/P><\/TD> Unique identifier for the HUC12 in which the meadow is located<\/SPAN><\/SPAN><\/P><\/TD><\/TR> OWNERSHIP<\/SPAN><\/SPAN><\/P><\/TD> Land ownership status <\/SPAN><\/SPAN><\/P><\/TD><\/TR> EDGE_COMPLEXITY<\/SPAN><\/SPAN><\/P><\/TD> Gives an indication of the meadow's exposure to external conditions <\/SPAN><\/SPAN>EDGE COMPLEXITY = (MEADOWperimeter/EAC perimeter) [EAC = Equal Area Circle]<\/SPAN><\/SPAN><\/P><\/TD><\/TR> DOM_ROCKTYPE<\/SPAN><\/SPAN><\/P><\/TD> Dominant rock type on which the meadow is located<\/SPAN><\/SPAN><\/P><\/TD><\/TR> VEG_MAJORITY<\/SPAN><\/SPAN><\/P><\/TD> Vegetation majority based on the LANDFIRE layer<\/SPAN><\/SPAN><\/P><\/TD><\/TR> SOIL_SURVEY<\/SPAN><\/SPAN><\/P><\/TD> Soil survey from which COKEY, Kf, ClayTot_r, MUKEY, and COMP_NAME were assigned to each meadow (SSURGO or STATSGO depending on layer coverage)<\/SPAN><\/SPAN><\/P><\/TD><\/TR> MUKEY<\/SPAN><\/SPAN><\/P><\/TD> Mapunit Key: Unique identifier for the Mapunit in which the meadow is located<\/SPAN><\/SPAN><\/P><\/TD><\/TR> COKEY<\/SPAN><\/SPAN><\/P><\/TD> Component Key: Unique identifier for the major component of the mapunit in which the meadow is located <\/SPAN><\/SPAN><\/P><\/TD><\/TR> COMP_NAME<\/SPAN><\/SPAN><\/P><\/TD> Component Name: Name of the soil component with the highest representative value in the mapunit in which the meadow is located <\/SPAN><\/SPAN><\/P><\/TD><\/TR> Kf<\/SPAN><\/SPAN><\/P><\/TD> K factor: A soil erodibility factor that quantifies the susceptibility of soil particles to detachment by water. Low: 0.05-0.2 Moderate: 0.25-0.4, High: >0.4<\/SPAN><\/SPAN><\/P><\/TD><\/TR> ClayTot_r<\/SPAN><\/SPAN><\/P><\/TD> Representative value <\/SPAN><\/SPAN>(%)<\/SPAN>of total clay<\/SPAN><\/SPAN><\/P><\/TD><\/TR> CATCHMENT_AREA<\/SPAN><\/SPAN><\/P><\/TD> The approximate area of the upstream catchment exiting through the meadow<\/SPAN><\/SPAN>(sq. m)<\/SPAN><\/SPAN><\/P><\/TD><\/TR> ELEV_MEAN<\/SPAN><\/SPAN><\/P><\/TD> Mean elevation (m)<\/SPAN><\/SPAN><\/P><\/TD><\/TR> ELEV_RANGE<\/SPAN><\/SPAN><\/P><\/TD> Elevation range (m) across each meadow<\/SPAN><\/SPAN><\/P><\/TD><\/TR> FLOW_RANGE<\/SPAN><\/SPAN><\/P><\/TD> We ran the flow length geoprocessing tool across a statewide 30m DEM then ran Zonal Statistics for each meadow on that raster. This tool measures the number of cells from each location to the nearest ridgetop. The flow range is the range value from the zonal statistics and reflects the range of distances to ridgetop across the meadow.<\/SPAN><\/SPAN><\/P><\/TD><\/TR> FLOW_SLOPE<\/SPAN><\/SPAN><\/P><\/TD> A slope metric utilizing the range of elevation values (the rise) and the Flow Range previously described (the run). Output is effectively Range(Elevation)/Range(Flow Length to ridgetop) for each meadow.<\/SPAN><\/SPAN><\/P><\/TD><\/TR> ED_MIN_LAKE<\/SPAN><\/SPAN><\/P><\/TD> Minimum Euclidean Distance (m) to lake edges <\/SPAN><\/SPAN><\/P><\/TD><\/TR> ED_MIN_FLOW<\/SPAN><\/SPAN><\/P><\/TD> Minimum Euclidean Distance (m) to NHD Streams/Rivers <\/SPAN><\/SPAN><\/P><\/TD><\/TR> ED_MIN_SEEP<\/SPAN><\/SPAN><\/P><\/TD> Minimum Euclidean Distance (m) to NHD Seeps/Springs <\/SPAN><\/SPAN><\/P><\/TD><\/TR> ED_MIN_FStopo<\/SPAN><\/SPAN><\/P><\/TD> Minimum Euclidean Distance (m) to Forest Service Topographic Map Data Transportation layer <\/SPAN><\/SPAN><\/P><\/TD><\/TR> HGM_Type<\/SPAN><\/SPAN><\/P><\/TD> Meadow hydrogeomorphic type <\/SPAN><\/SPAN><\/P><\/TD><\/TR> LAT_DD<\/SPAN><\/SPAN><\/P><\/TD> Latitude in decimal degrees<\/SPAN><\/SPAN><\/P><\/TD><\/TR> LONG_DD<\/SPAN><\/SPAN><\/P><\/TD> Longitude in decimal degrees<\/SPAN><\/SPAN><\/P><\/TD><\/TR> Shape_Length<\/SPAN><\/SPAN><\/P><\/TD> Meadow perimeter in meters<\/SPAN><\/SPAN><\/P><\/TD><\/TR> Shape_Area<\/SPAN><\/SPAN><\/P><\/TD> Meadow area in sq. meters<\/SPAN><\/SPAN><\/P><\/TD><\/TR> AREA_ACRE<\/SPAN><\/SPAN><\/P><\/TD> Meadow area in acres<\/SPAN><\/SPAN><\/P><\/TD><\/TR><\/TBODY><\/TABLE> <\/P> <\/P> Datum/Projection <\/SPAN><\/SPAN><\/P> Projected Coordinate System: NAD_1983_California_Teale_Albers<\/SPAN><\/SPAN><\/P> Projection: Albers<\/SPAN><\/SPAN><\/P> False Easting: 0.00000000<\/SPAN><\/SPAN><\/P> False Northing: -4000000.00000000<\/SPAN><\/SPAN><\/P> Central Meridian: -120.00000000<\/SPAN><\/SPAN><\/P> Standard Parallel 1: 34.00000000<\/SPAN><\/SPAN><\/P> Standard Parallel 2: 40.50000000<\/SPAN><\/SPAN><\/P> Latitude of Origin: 0.00000000<\/SPAN><\/SPAN><\/P> Linear Unit: Meter<\/SPAN><\/SPAN><\/P> <\/P> <\/P> <\/P> <\/P> Compiled Sources<\/SPAN><\/SPAN><\/P> Layer Name<\/SPAN><\/SPAN><\/P><\/TD> Source<\/SPAN><\/SPAN><\/P><\/TD> Spatial Coverage<\/SPAN><\/SPAN><\/P><\/TD><\/TR> AMPH<\/SPAN><\/SPAN><\/P><\/TD> Stanislaus National Forest<\/SPAN><\/SPAN><\/P><\/TD> Sierra Nevada<\/SPAN><\/SPAN><\/P><\/TD><\/TR> AMR<\/SPAN><\/SPAN><\/P><\/TD> American Rivers<\/SPAN><\/SPAN><\/P><\/TD> Yuba and Mokelumne watersheds<\/SPAN><\/SPAN><\/P><\/TD><\/TR> CALVEG<\/SPAN><\/SPAN><\/P><\/TD> USFS Region 5 Clearinghouse<\/SPAN><\/SPAN><\/P><\/TD> Sierra Nevada<\/SPAN><\/SPAN><\/P><\/TD><\/TR> ENFa<\/SPAN><\/SPAN><\/P><\/TD> Eldorado National Forest<\/SPAN><\/SPAN><\/P><\/TD> Eldorado National Forest<\/SPAN><\/SPAN><\/P><\/TD><\/TR> INFa<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD><\/TR> INFb<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD><\/TR> INFd<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD><\/TR> INFe<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD><\/TR> INFf<\/SPAN><\/SPAN><\/P><\/TD> Inyo National Forest<\/SPAN><\/SPAN><\/P><\/TD> Kern Plateau<\/SPAN><\/SPAN><\/P><\/TD><\/TR>