Understory

This document describes the standards, codes, methods, and definitions for Forest Inventory and Analysis field data items. The objective is to describe core field procedures that are consistent and uniform across all units.Access older versions of the Nationwide Forest Inventory Field Guide.Access regional versions of the field guide, which may include additional detail on regionally specific protocols not designated as core.

This fact sheet summarized research on tree seedling regeneration after the 2020 Labor Day Fires in Oregon. It includes information on how regeneration was influenced by fire patterns, seed source availability, and topographic and climatic factors. It also includes information for specific species, including Douglas-fir, western hemlock, Pacific silver fir, and noble fir.For more information visit Collaborative Postfire Research and Monitoring: Supporting Oregon’s Natural and Cultural Resources Recovery Task Force.