Forest Investment Account

Abstract of FIA Project 4217018 and 4274006

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Management Implications of an SFM Indicator Approach for the Arrow TSA and TFL 23: A Pilot Project

Author(s): Hamilton, Dennis; Wilson, Steve; Fretwell, Ron; McGuiness, Kathleen
Subject: British Columbia, Forestry, Integrated resource management, Technology/GIS/Modeling/Remote Sensing
Series: Forest Investment Account (FIA) - Land Base Investment Program - Innovative


Slocan Forests Products Ltd. (Slocan) and Pope & Talbot Ltd. (P&T) are leading development of a sustainable forest management (SFM) framework in the Arrow TSA and TFL#23. At present there have been no processes yet developed to ensure that sustainability criteria and their indicators implemented at the operational level are linked back to strategic planning in an adaptive management framework. The goal of this project was to pilot such an approach.
A series of workshops were held with resource planners and forest practitioners from the Arrow IFPA forest licensee group and Pope & Talbot (TFL 23) in order to identify and map an 'operationally feasible' 20-year wood supply for the Arrow forest district, including TFL 23.
The 20-year licensee blocking results coverage was compared to the 20-year blocking timber flow implications in relation to a) an SFM ecosystem representation approach; b) currently proposed Old Growth Management Areas (OGMAs); and, c) no OGMA requirements. The model was able to locate and harvest 59-60% of the identified 20-year blocks in the first 20 years, 84-85% by 30 years and 90% by 40 years for both scenarios - with and without OGMA rules.
The blocks not harvested in the first two decades were mostly held up by minimum harvest age and disturbance requirements.
With adjacency turned off and all the blocks scheduled for period 1, 27% more of the blocks were harvested in the first period. There were 2,404 ha that were identified blocks that were not part of the timber harvest landbase (THLB) for TSR 3.
It is important to recognize the significance of the link of operational to strategic results of this project. Both operational practitioners and strategic spatial modelling results are similar in final outputs; inotherwords, the practitioners were able to find 20-years of 'operationally feasible' wood as were the various scenarios modelled through CASH simulations. This suggests confidence of strategic spatial modelling in achieving realistic forecast simulations of 'on-the-ground' operational forestry practices.
It should also be noted that this analysis is specific to the Arrow TSA and TFL 23 and results may differ in other jurisdictions.
Practitioners felt development of an Equivalent Clearcut Area (ECA) Calculator tool and an Editing tool to allow for calculation of a 'running tally' of proposed blocking would have assisted greatly during the process of identifying the 'operationally feasible' 20-year blocking. It was also recommended that standardization is required for filling in retention strategies and numbers so model assumptions can be consistent on yield outputs (appraisal approach suggested).

For further information, please contact Dennis Hamilton, Nanuq Consulting Ltd. (

Updated September 08, 2005 

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