Timber Resource Inventory Model (TRIM): A Projection Model for Timber Supply and Policy Analysis

摘要

TRIM (Timber Resource Inventory Model) is a yield table projection system developed for timber supply projections and policy analysis. TRIM simulates timber growth, inventories, management and area changes, and removals over the projection period. Programs in the TRIM system, card-by-card descriptions of required inputs, table formats, and sample results are presented. The programs are available from the Pacific Northwest Research Station.