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This project was aimed primarily at technology tranfer, demonstrating the integration of silvicultural and harvesting techniques for protecting spruce understories in mixedwoods. This report provides details of the silvicultural component. It stresses post-harvest implications, particularly blowdown risk and growth and yield potential of released understory, and regeneration and growth of spruce, aspen, and poplar on mechanically harvested mixedwood sites. The project addresses concerns about maintaining the coniferous component of mixedwood forests and finding alternatives to clearcutting. It covers the current status of operational understory protection and some related aspects of integrated resource management.
Presenting a summary of the development in boreal forest management, this book provides a progressive vision for some of the world's northern forests. It includes a selection of chapters based on the research conducted by the Sustainable Forest Management Network across Canada. It includes a number of case histories.
This report presents cost and productivity results, as well as results about the harvesting-related damage incurred by the understory in a mixedwood harvesting trial. The trial compared conventional and Scandinavian harvesting equipment, levels of operational supervision, and special operational techniques. The study took place in the northern boreal forest region of Central Alberta during 1988 to 1990. Recommendations are proposed to guide operators, planners, supervisors, and regulators when they harvest 2-storied mixedwood stands and want to protect a significant portion of the understory.
Presents proceedings of a workshop held to summarise the current state of knowledge about the ecology of boreal mixedwood forests, to discuss management philosophies for these cover types, and to present information on new research relevant to the future management of boreal mixedwoods. Topics of individual presentations include boreal forests in Ontario, the role of forest disturbance, forest management, industrial use of boreal mixedwoods, forest data bases, forest vertebrate communities, habitat quality indicators, forest microclimate, organic and nutrient removals associated with harvesting, climate change impacts, prescribed fire, silvicultural operations, harvesting methods, vegetation control, ecosystem response to disturbance, site preparation, and effects of harvesting on forest fauna.
The landscapes of North America, including eastern forests, have been shaped by humans for millennia, through fire, agriculture, hunting, and other means. But the arrival of Europeans on America’s eastern shores several centuries ago ushered in the rapid conversion of forests and woodlands to other land uses. By the twentieth century, it appeared that old-growth forests in the eastern United States were gone, replaced by cities, farms, transportation networks, and second-growth forests. Since that time, however, numerous remnants of eastern old growth have been discovered, meticulously mapped, and studied. Many of these ancient stands retain surprisingly robust complexity and vigor, and forest ecologists are eager to develop strategies for their restoration and for nurturing additional stands of old growth that will foster biological diversity, reduce impacts of climate change, and serve as benchmarks for how natural systems operate. Forest ecologists William Keeton and Andrew Barton bring together a volume that breaks new ground in our understanding of ecological systems and their importance for forest resilience in an age of rapid environmental change. This edited volume covers a broad geographic canvas, from eastern Canada and the Upper Great Lakes states to the deep South. It looks at a wide diversity of ecosystems, including spruce-fir, northern deciduous, southern Appalachian deciduous, southern swamp hardwoods, and longleaf pine. Chapters authored by leading old-growth experts examine topics of contemporary forest ecology including forest structure and dynamics, below-ground soil processes, biological diversity, differences between historical and modern forests, carbon and climate change mitigation, management of old growth, and more. This thoughtful treatise broadly communicates important new discoveries to scientists, land managers, and students and breathes fresh life into the hope for sensible, effective management of old-growth stands in eastern forests.
Topics : underplanting white spruce seedlings in maturing aspen stands, harvesting to remove mature aspen overstory, release understory spruce for further growth, etc.