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Here, we propose to parameterize the SORTIE-BC stand dynamics model for Montane spruce zone stands in the southern interior of BC. Similar work is currently being funded by the Forest Science Program for southern interior ICH subzones (FSP #Y062067). In order for the SORTIE-BC model to make accurate stand growth predictions for the MS zone, including MPB affected areas, it is necessary to sample a range of stands characteristic of the zone. Unfortunately, due to the MPB infestation and recent salvage operations many of the stands necessary for parameterization, particularly those containing mature lodgepole pine, are becoming scarce in the southern interior. Without the information collected from these rapidly disappearing stands it will be impossible to parameterize the SORTIE-BC model for the MS zone. To parameterize the SORTIE-BC model, we will quantify the growth response of juvenile trees (<10 cm dia.) growing under a range of light environments, characterize the probability of juvenile tree mortality, and investigate the effects of competition on the growth and survival of adult trees (>10cm dia). The primary tree species we will collect data for include lodgepole pine, subalpine fir and spruce. Our empirical data will be linked to SORTIE-BC. SORTIE-BC is a resource-mediated, spatially explicit, mixed-species forest model that makes population dynamic forecasts for juvenile and adult trees. It has a flexible user-interface that allows incorporation of a wide range of silvicultural strategies (e.g., clearcutting, understory protection, understory planting, diameter limit harvesting, shelterwood, single or group selection and variable retention). With the model, we can examine how stands will develop following MPB attack. We will be able to evaluate and estimate timber growth implications on residual trees and regenerated stands in the understory and in clearcut openings. We will also be able to predict residual stand development with and without treatment under various levels of attack. This research will clearly aid the development of science-based policies, regulations and guidelines for the management of mountain pine beetle affected stands.
Simard, Suzanne W., Blenner-Hassett, Trevor. 2007. Predicting development and productivity of southern interior mixed species stands following mountain pine beetle attack. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2007MR251
Topic: FLNRORD Research Program
Keywords: Forest, Investment, Account, (FIA), Dendroctonus, Ponderosae, British, Columbia
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