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A Density Management Diagram for Even-aged Ponderosa Pine Stands

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We developed a density management diagram (DMD) for ponderosa pine using Forest Inventory and Analysis (FIA) data. Analysis plots were drawn from all FIA plots in the western United States on which ponderosa pine occurred. A total of 766 plots met the criteria for analysis. Selection criteria were for purity, defined as ponderosa pine basal area ≥80% of plot basal area, and even-agedness, as defined by a ratio between two calculations of stand density index. The DMD is relatively unbiased by geographic area and therefore should be applicable throughout the range of ponderosa pine. The DMD is intended for use in even-aged stands, but may be used for uneven-aged management where a large-group selection system is used. Examples of density management regimes are illustrated, and guidelines for use are provided. West. J. Appl. For. 20(4):205–215.
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Keywords: Silviculture; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; mountain pine beetle; natural resource management; natural resources; northern goshawk; stand density index; stocking diagram

Document Type: Regular Article

Affiliations: 1: Department of Forest, Range, and Wildlife Sciences and Ecology Center Utah State University Logan UT 84322-5215, Email: 2: Rocky Mountain Research Station, Forest Inventory and Analysis USDA Forest Service Ogden UT 84401

Publication date: 2005-10-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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