FVS Keyword Component Files (Addfiles)

Sets of FVS keywords may be saved so you do not have to re-create them each time you start an FVS simulation. These files are called keyword component files, or "addfiles". They may be added to a simulation by simply reading them into the simulation.

Keyword component files have been created by members of our staff and others to perform complicated interactions with the FVS models. These are often created to provide actions that are not currently included in the FVS models.

Classification

Includes insect disease and wildfire hazard rating systems, stand structure algorithms and wildlife designation.

• Mountain Pine Beetle in Lodgepole Pine Risk Rating Event Monitor Addfiles ^\1
  Two separate Event Monitor applications that calculate mountain pine beetle risk ratings for lodgepole pine stands.
• Spruce Beetle Risk Rating Event Monitor Addfiles ^\1
  Calculates spruce beetle risk in stands of Engelmann spruce-subalpine fir. The application comes as a pair of EM addfiles: one to be used with well-drained creek bottom stands, the other to be used with all other stands.
• Southern Pine Beetle (SPB) Risk Event Monitor Addfile ^\1
  Three geographical versions of the SPB event monitor that demonstrates the potential loss of pine timber and habitat to SPB. Coastal and Piedmont based on the Forest Health Decision Key for National Forests in Region 8, April 1997.
• Beetle & Moth Hazard Rating (09/02/2022, 0.04 MB)
  Calculates beetle and moth hazard rating (Region 1).
• California Wildlife Habitat Relationship (09/02/2022, 0.04 MB)
  Calculates the California Wildlife Habitat Relationship size and density class. Values for a given year are before-treatment values.
• R2 Habitat Structural Stage without HSS5 (09/02/2022, 0 MB)
  Calculates the Region 2 (Black Hills) Habitat Structural Stage without calculations of HSS5.
• R2 Habitat Structural Stage with HSS5 (09/02/2022, 0 MB)
  Calculates the Region 2 (Black Hills) Habitat Structural Stage with calculations of HSS5.
• Fire Hazard Rating (09/02/2022, 0.04 MB)
  Calculates fire hazard based on torching and crowning indices.
• Western Spruce Budworm/Douglas-fir Tussock Moth (09/02/2022, 0.07 MB)
  Rates Western Spruce Budworm/Douglas-fir Tussock Moth Hazard (Region 1).

Computing

Examples in this category demonstrate the use of the Event Monitor, Compute keyword, to output select information from an FVS run.

• Computed Uncorrected Canopy Cover % (09/02/2022, 0.07 MB)
  This addfile computes the uncorrected canopy cover percent.
• Computes SDIMax and BAMax (09/02/2022, 0.07 MB)
  This addfile computes stand density index maximum (SDIMAX) and basal area maximum (BAMAX) keywords.
• Computes Stand Age & FVS Compute Stand Age (09/02/2022, 0.07 MB)
  This addfile computes Stand Age and FVS Compute Stand Age.
• Compute Stand Attributes (09/02/2022, 0.12 MB)
  This addfile computes tpa, ba, sdi, and sdi% for five size categories.
• Computes Forest Type Group (09/02/2022, 0.07 MB)
  This addfile computes Forest Type Group.
• Computes Seeds & Saps Component (09/02/2022, 0.07 MB)
  This addfile computes Seeds and Saps Component.
• Computes Stand Size Class (09/02/2022, 0.07 MB)
  This addfile computes Stand Size Class.
• Wildlife Habitat Response Model (WHRM) Inputs (09/02/2022, 0.04 MB)
  This addfile generates input needed for the Wildlife Habitat Response Model (WHRM) used to predict fuel treatment effects in dry interior forests of the West.

Thinnings

Includes addfiles that do complicated or unique thinnings.

• Percent Canopy Cover Thin (09/02/2022, 0.04 MB)
  Thins to a total stand canopy cover with dbh limits.
• Percent Canopy Cover Thin without Oak (09/02/2022, 0.07 MB)
  Thins to a total stand canopy cover but does not remove oak.
• Thin based on the 40-40-30-30-5 rule (09/02/2022, 0.13 MB)
  Thins to a total stand canopy cover or basal area residual following the 40-40-30-30-5 rule.
• Thin to a Cubic Foot Target (09/02/2022, 0.04 MB)
  Thin to a cubic foot target.
• Thin From Below to a Stand Level Target (09/02/2022, 0.12 MB)
  This addfiles thins from below within a diameter range to meet stand level residual basal area.
• Defensible Fuel Profile Zone thinning (09/02/2022, 0.04 MB)
  Thinning for Region 5 Defensible Fuel Profile Zone.
• Defensible Fuel Profile Zone ITS (09/02/2022, 0.04 MB)
  Individual Tree Selection (ITS) for Region 5 Defensible Fuel Profile Zone.
• Reset Stand Age based on Dominant Height (09/02/2022, 0.12 MB)
  Reset Stand Age bases on Dominant Height.

Regeneration

Addfiles which help user's in modeling regeneration.

• Regeneration Imputation (R1-Douglas-fir dry) (09/02/2022, 0.07 MB)
  This addfile imputes regeneration for R1 Douglas-fir dry sites.
• Seedling/Sapling Occurrence Specifier (Black Hills NF) (09/02/2022, 0 MB)
  This addfile classifies understory component.

1/ These keyword component files are developed and maintained by the Forest Health Technology Enterprise Team (FHTET). These links lead to web pages on the FHTET website.