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Forest Vegetation Simulator

Forest Vegetation Simulator (FVS)

The Forest Vegetation Simulator (FVS) is a family of forest growth simulation models. It is a system of highly integrated analytical tools that is based upon a body of scientific knowledge developed from decades of natural resources research and experience. Since the development of the first model for northern Idaho in 1973, FVS has evolved into a collection of “variants” which represent different geographic areas across the country.

FVS answers questions about how forest vegetation will change in response to natural succession, disturbances, and proposed management actions. Extensions to the base model are available to assess the effects of insects, disease, and fire. The Fire & Fuels Extension (FFE) includes live tree, dead tree, down dead wood and forest floor biomass information, which can be used to estimate changes in carbon stocks over time.

A climate-sensitive version known as Climate-FVS is currently available for western states, and an eastern version is in development. Climate-FVS changes core growth, mortality, and regeneration estimates to respond to climate change, according a user-selected general circulation model (GCM), thereby allowing users to model the effects of management under changing climate conditions.


  • What is FVS?
    The FVS modeling system and its components.
  • Software
    FVS program and associated software.
  • Documents
    FVS User Guides and reference documents.
  • Training
    Self-guided and instructor lead sessions, plus Webinars.
  • Support
    Helpdesk, contact information, and on-line resources.

US Forest Service
Forest Management Service Center
2150 Centre Avenue, Bldg. A
Fort Collins, CO 80526-1891

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Last modified: Thursday, 09-Mar-2017 12:31:16 CST