Stocking Control Procedures for Multiaged Ponderosa Pine Stands in the Inland Northwest
Abstract:
Multi-aged management of forest stands in western North America is a viable option in many areas where traditional even-aged management is undesirable. Procedures for guiding stocking control for multi-aged ponderosa pine (Pinus ponderosa
) stands were developed using the PP-MASAM model (Ponderosa Pine–Multi-aged Stocking Assessment Model). These procedures allow the user to divide stands into components such as age classes or canopy strata that are the basic unit for growing space allocation. Growing space is represented by leaf area index. Stocking regimes are assessed over a single cutting cycle through projections of volume increment, stand density, and tree vigor. The approach is flexible for guiding stocking in ponderosa pine stands for diverse structural objectives including retention of ancient trees, development of presettlement structures, stands with two to four age classes, or stands with short or long cutting cycles. Example stocking regimes and internet links are provided to access the model. West. J. Appl. For. 18(1):5–14.
Keywords:
Pinus ponderosa;
multiaged;
uneven-aged;
selection silviculture;
regeneration methods;
silvicultural systems;
environmental management;
forest;
forest management;
forest resources;
forestry;
forestry research;
forestry science;
natural resources;
natural resource management
Document Type: Miscellaneous
Affiliations:
1:
School of Forestry, University of Montana, Missoula, MT, 59812,
2:
School of Forestry and Wood Products, Michigan Technological University, Houghton, MT, 49931-1295,
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