Forestry Methodologies

Estimating Silvicultural Gain using a Height-Intercept Approach

It has always been appealing to attempt to estimate site index by observing the height growth rate in young trees at early ages (Bull, 1931).  Various methods have been proposed with varying starting heights and numbers of years to observe (Wakeley, 1954). With the development of the 10m Site Index classification methodology (Arney, 2010) there … Continue reading Estimating Silvicultural Gain using a Height-Intercept Approach

July 7 FPS Software Update

In recent months we have been attempting to incorporate requests from FPS users to match their desired forestry applications. We have also upgraded FPS software tools where errors or bugs were identified. Most significant were multiple requests to allow full transfer of cruised stand records from the PLOTS table to the DBHCLS table when compiled.

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

FPS Cruise Compiler – Update History

Each of the FPS software components are tested and updated on an annual basis or as soon as a problem is identified and verified.  The Cruise Compiler comes under intense scrutiny on a regular basis due to its use in all kinds of stand structures and field sample designs.  The following PDF provides an abstract … Continue reading FPS Cruise Compiler – Update History

Frequently Asked Questions about FPS – Cruise Compiling

The FPS Cruise Compiler is unique in forestry.  It will handle all stand structures and variations of sub-sampling of tree parameters.  The following PDF provides some insight into these attributes of FPS. FAQ FPS Cruise Compiling and Site

2014: IUFRO- CIF – SAF

The FBRI is actively participating in the 2014 IUFRO- CIF – SAF International Convention in Salt Lake City on October 6 – 11, 2014. Come to visit us in the Exhibit Hall, Booth #1007. Three of our FBRI Directors will be on site. The FBRI will be presenting three papers at the convention. Session Title: Implementation … Continue reading 2014: IUFRO- CIF – SAF

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