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Development and Field Application of Density Management Diagrams and Size-density Surface Models Developed for the Boreal Mixedwood Stands of Ontario

David James SmithGreat Lakes Forestry CentreNorthern Forestry Program (Canada)

出版	Great Lakes Forestry Centre, 1997
主題	Technology & Engineering / Agriculture / Forestry
ISBN	06622514909780662251491
URL	http://books.google.com.hk/books?id=hrVHAQAAMAAJ&hl=&source=gbs_api

註釋Describes the construction and interpretation of the density management diagram (DMD and the size-density surface model, which assist forest managers to better understand mixedwood stand development and provide an aid for the planning of thinning prescriptions in boreal Ontario. The DMD is an age dependent, average stand mortality model that predicts the structural development of fully stocked natural stands. That concept has been expanded in the surface model to enable multispecies stand development and interspecific competition to be followed. The surface model illustrates the relationship between plant size and density for all possible combinations of two dominant tree species. Examples are provided to assist the user in interpreting the models in black spruce-jack pine stands. The utility of the surface is discussed in relation to stand development, and examples are given to illustrate the effect of silvicultural treatments on stand structure.