CONUS forest carbon projections from a calibrated Forest Vegetation Simulator (FVS) for PERSEUS

Continental (CONUS, 49 states) forest carbon projections to 2125 from a modernized, Bayesian-calibrated Forest Vegetation Simulator (FVS) initialized from the full USDA Forest Inventory and Analysis database (FIADB). Three growth/mortality engines (default native mortality, Bayesian-calibrated, and a national density-dependent gompit mortality) are run under four management scenarios (reserve/no-harvest; extensive partial harvest; a realistic managed scenario with intensive clearcut harvest confined to plantations; and an all-intensive bound), with harvest and disturbance regimes derived from the CONUS-HCS decision surfaces and sampled at FIA plot locations. Per-state live aboveground carbon and biomass are anchored to FIADB carbon. Bayesian posterior-draw parameter uncertainty and bootstrap sampling uncertainty are quantified; a FIADB-vs-TreeMap multi-scale area-expansion comparison and landowner/ecoregion/state trend breakdowns are included. These data drive the FVS engines on the PERSEUS Forest Intelligence dashboard. Includes per-state series (CSV), the merged dashboard series (JSON), management-scenario outputs, plantation and harvest-rate inputs, the full reproducible pipeline code, and findings documentation including a handoff. Derived from the fvs-modern software (DOI 10.5281/zenodo.19802672).