Forest Inventory and Planning

What is 10-meter Site Index?

Foresters have traditionally used total tree height at a fixed index age to classify the forest productivity at any given location (soil, topography and climate).  While useful in the 1930 – 1980 years, researchers such as Boris Zeide (1978) recognized that all trees of a species do not follow a single growth form (by site … Continue reading What is 10-meter Site Index?

Question: Does Stand Clumpiness have an Effect on Total Yield?

The chart below is a display of 16,669 cruised stands from multiple forest ownerships in multiple western States.  The standing cubic foot volume is charted by stand top height to remove any concern about age or site class differences. Average volumes by top height class (60, 90, 120 and 150-feet) are summarized by clumpiness index … Continue reading Question: Does Stand Clumpiness have an Effect on Total Yield?

The Forester’s Guidebook for Managing Working Forests

This guidebook has been 20 years in building.  It has been regularly distributed as a hard copy 328 page textbook along with the Forest Projection and Planning System (FPS) software.  The FBRI has now made this guidebook a free download from this site (and from ResearchGate.net). FPS Forester’s Guidebook This guidebook provides methods, sequences of … Continue reading The Forester’s Guidebook for Managing Working Forests

Workshop: Forest Planning Methods – September 2016

Participants in this two-day workshop will apply mixed-silvicultural regimes to a stand-based forest inventory for a large working forest ownership.

Technical Note on Cruise Designs

Foresters must inventory large landscapes on a regular (periodic) basis.  Due to the magnitude of this task, there is a long history of viable shortcuts that have merit when determining the kind and intensity of field sample designs.  However, this task does not have a constant, single objective.  Traditionally, a field sample was obtained to … Continue reading Technical Note on Cruise Designs

Comparison of Software Suites

The Forest Biometrics Research Institute (FBRI) gets frequent inquiries about the similarities and differences between the FPS software suite and other software tools available or known in the forest industry.  This has become such a significant and repeated topic that a handout was developed for the 2014 International Conference of the Society of American Foresters (SAF), Canadian … Continue reading Comparison of Software Suites

2012 SAF Convention: Measuring and Mapping Forest Site Capacity

October 24, 2012 * Spokane Convention Center, Spokane, Washington Tour Description as printed: This hands-on field workshop will be about measuring and mapping forest site capacity across an ownership, watershed, or forest. The Forest Biometrics Research Institute has developed an effective methodology for identifying and classifying natural site growth capacity that can be applied in … Continue reading 2012 SAF Convention: Measuring and Mapping Forest Site Capacity

2012 PNW Reforestation Council Presentation

October 11, 2012 * Heathman Lodge, Vancouver, WA Working Forest Costs presentation by Jim Arney

Technical Note on Cruise Designs

Technical Note on Cruise Designs – June 10, 2015 Forest Biometrics Research Institute – James D. Arney, PhD Forest Projection and Planning System (FPS) – Version 7.43 Variable-plot cruise designs became popular in the early 1970s replacing fixed-area and strip-plot designs as most efficient in the field.  Most silvicultural regimes were based on clearcuts and … Continue reading Technical Note on Cruise Designs