Effectiveness of forest management strategies to mitigate effects of global change in south-central Siberia
We investigated questions about the ability of broad silvicultural strategies to achieve multiple objectives (reduce disturbance losses, maintain the abundance of preferred species, mitigate fragmentation and loss of age-class diversity, and sequester aboveground carbon) under future
climate conditions in Siberia. We conducted a factorial experiment using the LANDIS-II landscape disturbance and succession model. Treatments included varying the size and amount of areas cut and the cutting method (selective or clearcut). Simultaneously, the model simulated natural disturbances
(fire, wind, insect outbreaks) and forest succession under projected future climate conditions as predicted by an ensemble of global circulation models. The cutting method and cutting rate treatments generally had a large effect on species and age-class composition, residual living biomass,
and susceptibility to disturbance, whereas cutblock size had no effect. Cutblock size affected only measures of fragmentation, but cutting method and cutting rate often had an even greater effect. Based on the results, we simulated a “recommended” strategy and compared it with
the current forest management practice. The recommended strategy resulted in greater forest biomass, increased abundance of favored species, and reduced fragmentation, but it did not significantly reduce losses by disturbance. No single strategy appears able to achieve all possible forest
Document Type: Research Article
Institute for Applied Ecosystem Studies, USDA Forest Service, Northern Research Station, 5985 Highway K, Rhinelander, WI 54501, USA.
International Institute for Applied Systems Analysis, Schlossplatz 1, A-2361 Laxenburg, Austria.
Portland State University, Department of Environmental Sciences and Management, P.O. Box 751, Portland, OR 97207, USA.
Publication date: July 5, 2011
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