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Glen Armstrong

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Glen Armstrong

Renewable Resources

t: 780.492.8221
f: 780.492.4323

Department of Renewable Resources
751 General Services Building
University of Alberta
Edmonton Canada T6G 2H1
Curriculum Vitae

  • Associate Professor
  • Associate Chair (Graduate Programs)

  • Forest Management
  • Forest Economics
  • Operations Research

  • REN R 430: Forest Management
  • FOR 431: Integrated Forest Management
  • REN R 535: Operations Research for Natural Resource Management

Subject areas and related deposits

  • Boreal forest

  • Forest management

    • Optimal zoning of forested land considering contribution of exotic plantations

      Previous studies suggest that management intensity zoning systems, such as the triad approach, could allow Canada’s forest industry to maintain or increase timber harvest levels while simultaneously reducing its environmental impact. In most such studies, the zones are exogenously specified. In this study, we use a linear programming model to endogenously allocate forest land to management intensity zones given several alternative policy scenario formulations. We examine how alternative policy scenarios affect the net present value of the optimal forest management plan, timber output, and the spatial allocation of land to management intensity zones. We conclude that policies which facilitate optimal zoning could enable land use specialization to increase both profits and ecological protection. Such zoning, however, can only happen if provincial governments in Canada revise their forest policies with respect to allocation of forest tenures and establishment of exotic plantations on public forest land.

      Download attached1
  • Optimal rotation

    • Optimal forest harvest age considering carbon sequestration in multiple carbon pools: A comparative statics analysis

      We present an analytical model for determination of the economically optimal harvest age of a forest stand considering timber value, and the value of carbon fluxes in living biomass, dead organic matter, and wood products pools. Through comparative statics analysis, we find that consideration of timber value and fluxes in biomass carbon increase harvest age relative to the timber only solution, and that the effect on optimal harvest age of incorporating fluxes in the dead organic matter and wood products pools is indeterminate. We also present a numerical example to examine the magnitudes of these ef- fects. In general, incorporating the dead organic matter and wood products pools have the effect of reducing rotation age. Perhaps more interestingly, when initial stocks of carbon in dead organic matter or wood products pool is relatively high, consideration of these pools can have a highly negative effect on net present value.

  • Silviculture

    • Sustained Yield Forestry in Sweden and Russia: How Does it Correspond to Sustainable Forest Management Policy?

      This paper analyzes how sustained yield (SY) forestry is defined and implemented in Sweden and Russia, two countries with different forest-industrial regimes. We first compare definitions of SY forestry in national legislation and policies. Then we study forest management planning in two large forest management units with respect to: delivered forest products and values, how the harvest level of timber is defined, where the harvest takes place, and what treatments are used to sustain desired forest products and values. In Sweden SY forestry is maximum yield based on high-input forest management, and in Russia it is forestry based on natural regeneration with minimum investments in silviculture. We conclude that how SY forestry contributes to SFM depends on the context. Finally, we discuss the consequences of SY forestry as performed in Sweden and Russia related to its ability to support diverse forest functions, as envisioned in sustainable forest management policy.

  • Sustainable forestry

  • Timber harvest scheduling

  • Timber supply