Forest Vegetation Simulator - FVS20250930c

B-Tagged release had error in NVEL submodule commit. This release should correct.

20250930 Release corrected for improved Linux environment builds
FIA Volume, Biomass, and Carbon computational methods added
Read / Track Additional Inputs for FIAVBC from FVS_StandInit / FVS_PlotInit / FVS_TreeInit Tables
Expansion of STDINFO Keyword for FIAVBC
Standardization of FVS Tabular Outputs
Updates to Event Monitor Variables
Updates to SPMCDBH, DBHDIST, and SUMSTAT Event Monitor Functions
New Inventory Reference Table
Modification to FVS_Stats_Stand and FVS_Stats_Species Tables
Modification to Cubic and Board Foot Volume Topkill Logic for Eastern Variants
Expansion of VOLUME Keyword for Eastern Variants
Update to BFVOLUME Keyword
Retirement of Legacy Volume Computational Methods
Deprecation of BFVOLEQU and CFVOLEQU Keywords
Updates to MINHARV Keyword

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds 7 months ago

Forest Vegetation Simulator - FVS20250930

September 30, 2025

• FIA Volume, Biomass, and Carbon computational methods added
• Read / Track Additional Inputs for FIAVBC from FVS_StandInit / FVS_PlotInit / FVS_TreeInit Tables
• Expansion of STDINFO Keyword for FIAVBC
• Standardization of FVS Tabular Outputs
• Updates to Event Monitor Variables
• Updates to SPMCDBH, DBHDIST, and SUMSTAT Event Monitor Functions
• New Inventory Reference Table
• Modification to FVS_Stats_Stand and FVS_Stats_Species Tables
• Modification to Cubic and Board Foot Volume Topkill Logic for Eastern Variants
• Expansion of VOLUME Keyword for Eastern Variants
• Update to BFVOLUME Keyword
• Retirement of Legacy Volume Computational Methods
• Deprecation of BFVOLEQU and CFVOLEQU Keywords
• Updates to MINHARV Keyword

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds 8 months ago

Forest Vegetation Simulator - FVS20250701

July 1, 2025

• Increased Activity Limits
• Greater Precision in Growth Period Input
• Improved Handling of Blank Species Input

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds 11 months ago

Forest Vegetation Simulator - FVS20250401

April 1,2025

• Quarter updates include:
• Canopy Cover Updates
• STDIDENT Keyword Database Output
• FIA Species Output in FVS_REGEN_INGROW Table
• Corrected Sampling Weight Reporting when Error is Encountered

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds about 1 year ago

Forest Vegetation Simulator - FVS20250101 FS2025.1

January 1,2025

Quarter updates include:

• McKelvie NF Location Added to CR Variant
• FVS Species Number Added to FVS_CalibStats Table
• FFE Floating Point Exception Error Issues
• Updates to PICO SDI in Blue Mountains Variant
• Update to Volume Computation Engine

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds over 1 year ago

Forest Vegetation Simulator - FVS20240930 FS2024.4

September 30, 2024

Updates to this quarterly release include:

• Automatic Generation of Error Table
• Nesting of Addfiles
  20240930FVS_ReleaseNotice.docx

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds over 1 year ago

Forest Vegetation Simulator - FVS20240701 FS2024.3

July 1, 2024

In this quarterly release there were minor fixes to the base code to address minor bugs and build list directory structure.
20240701FVS_ReleaseNotice.pdf

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds almost 2 years ago

Forest Vegetation Simulator - Forest Vegetation Simulator 20240401 FS2024.2

This update incorporates several Forest Vegetation Simulator quarterly releases. More information can be found in the attached release notices or on our website https://www.fs.usda.gov/fvs/
FVS_2023_Q4_ReleaseNotice.pdf
FVSReleaseNotice-20240401.pdf
2024Q1-FVSReleaseNotice-20231222.pdf

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds about 2 years ago

Forest Vegetation Simulator - Forest Vegetation Simulator 20230728

Welcome to our July 28, 2023 release!

In this quarterly release, the major updates to base model were:

• Addition of Coleville National Forest to East Cascades (EC) Variant
• Check and Waring of Excess Tree per Acre Input

Please see the attached bulletin for more information or visit our website at https:/www.fs.usda.gov/fvs/
FVS_Q3_ReleaseNotice.docx

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds almost 3 years ago

Forest Vegetation Simulator - Forest Vegetation Simulator 20230518

Welcome to our May 18, 2023 Release!

In this quarterly release, the major update to the base model were:

Available Volume Equation Options Expanded

Addition of Lorey's Height Event Monitor Variables
Updated Default Merchantability Limits for National Forests in North Carolina
Revised Forest Typing Algorithm
Corrected Location Mapping for Pine Ridge Reservation in CR Variant
Please see the attached newsletter for more information or visit our website at https://www.fs.usda.gov/fvs/
20230518_FVSNewsletterIssue24.pdf

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds about 3 years ago

Forest Vegetation Simulator - Forest Vegetation Simulator 20230106.01

This is a supplemental release of our 20230106 release.

This release is intended to resolve an issue where volume equations were improperly mapped for Region 5 forests.
Also included in the supplemental release:
Update the FIA species code mapping of other softwoods in the SO variant
Corrections to Forest Type calculations to account for the change in FIA code for other softwoods from 298 to 299, system wide
Correction to Forest location mapping for the Bureau of Indian Affairs Pine Ridge Reservation

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds over 3 years ago

Forest Vegetation Simulator - Forest Vegetation Simulator 20230106

Welcome to our January 06, 2023 Release!

In this quarterly release, the major update to the base model were:

• Available Volume Equation Options Expanded
• SN Variant Now Accepts Top Diameter User Inputs when using BFVOLUME or VOLUME Keywords
• Improved Height Growth Estimates for Norway Spruce in LS and NE Variants
• Improved Mathematical Logic in KT Variant
• Corrected Output Database Handling
• Corrected 'Before Thin CCF' Value Reporting
• Modification to Crown Ratio Logic for Species in AK Variant and Redwood and Giant Sequoia in CA, NC, OC, OP, PN, WC, and WS Variants
• Modification to Height Dubbing Logic of Dead Tree Records in AK Variant

Please see the attached newsletter for more information or visit our website at https://www.fs.usda.gov/fvs/

2023Q1_FVSNewsletterIssue23_January062023.pdf

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds over 3 years ago

Forest Vegetation Simulator - Forest Vegetation Simulator 20220930

Welcome to our September 30, 2022 Release!

In this quarterly release, the major update to the base model were modifications to the PN and WC mortality as well as updated volume computations. Please see the attached newsletter for more information or visit our website at https://www.fs.usda.gov/fvs/

FVSNewsletterIssue22_30September2022.pdf

Biosphere - Forest Modeling and Analysis - Fortran
Published by wagnerds over 3 years ago