Attribute Metadata forthe SPB_County_Summary_9_20_2013 shapefile and Excel workbook
Model projections derived from the 2012 National Insect & Disease Risk Map (NIDRM)
Projected losses in NIDRM are cumulative over a 15-year (2013-2027) time frame and assume that no remediation activities occur during that time frame.
For Further Information and Full Data Accessconsult the 2012 NIDRM Website:
Host species modeled for Southern Pine Beetle (SPB )include; shortleaf , slash ,longleaf, pitch, pond, loblolly, eastern white and Virginia pine. This shapefile was derived from raster datasets with a 240 meter cell resolution. A 240 m. cell covers approximately 14 acres.
For questions about this shapefile, please contact:
Mark Zweifler
Contractor:
USDA Forest Service
Forest Health Technology Enterprise Team (FHTET)
517.596.2504
Email
CountyAcres / Acres in county
Host_Acres / Acres in county where SPB host tree species are present
Pct_w_Host / Percent of county with SPB host tree species
Pct_w_Haz / % of county with 1% or greater projected loss of host tree species basal area
PctHost_Hz / Similar to 'Pct_w_Haz' except analysis restricted to areas where SPB host tree species are present
Host_BA / Sum of SPB Host tree species basal area (BA ) expressed in sq. ft. per acre
BA_Loss / Sum of projected BA loss from SPB
BAH_Acre / Average basal area of host tree species on lands where host pine species are growing ( i.e.excludes lands where no southern pine)
BAH_los_Ac / Projected per-acre losses on lands where host tree species are present
Pct_BAH_lo / Projected BA loss rate for host tree species
Low_Haz_Ac / Acres in county with "Low hazard": 1-10% projected loss of host tree species basal area
Med_Haz_Ac / Acres in county with "Moderate hazard"": 11-24% projected loss of host tree species basal area
Hi_Haz_Acr / Acres in county with "High hazard": 25% or greater projected loss of host tree species basal area
All_haz_Ac / Acres in county with "Any hazard": 1% or greater of projected loss of host tree species basal area
Pct_Lo_Hz / % of county rated as "low hazard" ( see above)
Pct_Med_Hz / % of county rated as "moderate hazard"
Pct_Hi_Hz / % of county rated as "high hazard"
Pct_Any_Hz / % of county rated as "low", "moderate" or "high" hazard
Pct_gtLoHz / % of county rated as "moderate" or "high" hazard