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GUIDELINES for . . .
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Stand- and forest-level analysis tools

      Tables 2 and 3 provide a brief description of commonly available stand- and forest-level analysis tools that may be used to analyse the effects of stand density management treatments. The list is not exhaustive, and neither the Working Group nor the Ministry of Forests advocate using any particular system, listed or otherwise. However, planners and silviculturists are encouraged to use proven decision-making support tools in their work.

Table 2. A list of commonly available stand-level decision support models


Tool Owner Description Comments

FINSIL3 MacMillan Bloedel Ltd. Vancouver (public domain) Spreadsheet program for financial analysis of silviculture treatments. Based on data obtained in mid- to- late 1980s, can easily be updated with new data.
Stand Density Management Diagrams BCFS, CFS, UBC Vancouver and Victoria A diagram that graphically displays the relations between (variously) volume, basal area, diameter, height, trees per hectare, per cent site occupancy, mortality, etc. Gingrich-style diagrams are one example. Have been constructed in BC for lodgepole pine, white spruce, and interior Douglas-fir. Useful for illustrating relationships, however, similar and more information can be obtained from use of a growth and yield model.
PROGNOSIS BCFS, Victoria Stand Prognosis Model - growth and yield model for single and mixed species, even- and uneven-aged stands. Part of a family of models that allows analysis of economics, pests, tree crowns and environmental indicators. Calibrated for 14 regions of the U.S. Being calibrated by BCFS for BC interior species, starting in the Nelson Forest Region.
PRUNSIM, DF PRUNE Forest Resource Systems Institute, Florence, Alabama Spreadsheet programs that estimates the financial return from pruning coastal Douglas-fir stands. Helps determine how many and which trees in a stand should be pruned. Calibrated for southern Oregon.
SPS Mason Bruce and Girard Ltd. Stand Projection System - growth and yield model for single and mixed species, even- and uneven-aged stands. Some calibration for BC.
FPS J. Arney, Oregon, U.S.A. Forest Projection System - growth and yield model for single and mixed species; even- and uneven-aged stands. Some calibration for BC.
STIM WINSTIM CFS, Victoria Stand and Tree Integrated Model - growth and yield model. Also projects the growth of spaced and thinned stands. Calibrated for hemlock in BC and Pacific Northwest.
TASS BCFS, Research Branch Tree and Stand Simulator - biologically based growth and yield model for even-aged pure-species stands. See TIPSY. Calibrated for most even-aged stands of pure coniferous species of commer- cial importance in coastal and interior BC forests. Part of the SYLVER family of models.
XENO MacMillan Bloedel Ltd., Nanaimo A distance-dependent stand growth model capable of growing single or mixed species under both natural and managed regimes. Model simulates development of Douglas-fir and western hemlock, also allows for economic analysis in consideration of wood quality attributes.
SYLVER BCFS, Research Branch A system of Silviculture practices models that evaluates the impact on Yield, Lumber Value and Economic Return. Consists of models that grow stands, buck logs, saw lumber, grade boards and perform financial analyses (Kellogg 1989).
TIPSY BCFS, Research Branch Table Interpolation Program for Stand Yields - retrieves and interpolates stand yield information from a data- base generated by SYLVER. Windows system that generates tables for standing yield (including stand and stock tables), mortality, snags, products (logs, lumber and chips) and economic return. Repression has recently been added for lodgepole pine.

Table 3. A list of commonly available forest estate models


Tool Owner Description Comments

ATLAS UBC, Vancouver A Tactical Landscape Analysis System - multiple rotation, spatially explicit, block scheduling timber supply simulation model. Also performs road network analysis.
CASH6 FM Timberline Forest Inventory Consultants, Victoria Critical Analysis of Schedules for Harvesting - spatial timber supply simulation model. Operates in spatial or aspatial modes. Good for strategic-level or operational analysis.
FSSIM BCFS, Timber Supply Branch FS Simulator - timber supply simulation model. Approximates spatial harvest restric-tions. Good for strategic-level analysis; lacks economic analysis capability.
SIMFOR UBC, Vancouver Simulates the effects of forest management and stand development, predicts landscape composition, ecosystem pattern and habitat distributions for selected species. Landscape size may vary from 5000 to 50 000 hectares.
TREEFARM Stirling Wood Group, Victoria Timber supply simulation model. Approximates spatial harvest restric-tions. Good for strategic-level analysis.
WOODLOT BCFS, Resource Tenures & Engineering Branch Simulation model that finds the maximum single even-flow harvest level for a planning period. Used for AAC determination for woodlots in BC. Will receive yield projection output directly from TIPSY and VDYP stand yield models.
COMPLAN Simons-Reid Collins, Vancouver Forest estate simulation model for timber supply and forest estate activity planning. Flexible data input structures, allows for explicit recognition of spatial constraints and objectives, also considers some economic issues.
OPTIONS D.R. and Associates, Nanaimo Forest estate simulation model for timber supply and forest estate activity planning.
STANLEY REMSOFT, Inc. Spatially explicit harvest scheduler. Includes an automated block builder.
WOODSTOCK REMSOFT, Inc., Fredericton Flexible Forest Modelling System - timber supply model that allows the use of either simulation or linear programming. Allows the analysis of random events (such as fire), and for economic analysis of forest-level outputs.


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Copyright 1999 Province of British Columbia
Forest Practices Branch
BC Ministry of Forests
This page was last updated January 1999

Comments to: Tim Ebata <Tim.Ebata@gems8.gov.bc.ca>