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    Author(s): James E. King; David D. Marshall; John F. Bell
    Date: 2002
    Source: Res. Pap. PNW-RP-548. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 120 p
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (5.0 MB)

    Description

    Stand treatments were completed as prescribed with an initial calibration cut and five thinnings resulting in eight new regimes for management of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). Measurements were continued for an additional 14 years to observe stability and yields of stands in a postthinning holding period. Detailed descriptions of each regime based on measurements at each thinning are summarized in stand development tables. Regimes with the most growing stock after the last thinning produced 30 to 38 percent more gross-cubic-volume yield (live and cumulative thinnings and mortality) per acre than regimes with the least growing stock. The complete regimes are compared at three stages of stand development followed by recommendations for applications.

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    Citation

    King, James E.; Marshall, David D.; Bell, John F. 2002. Levels-of-growing-stock cooperative study in Douglas-fir: report no. 17—The Skykomish Study, 1961–93; The Clemons study, 1963–94. Res. Pap. PNW-RP-548. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 120 p

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    Keywords

    Thinning, growing stock, growth and yield, stand density, Douglas-fir Pseudotsuga menziesii, series–Douglas-fir LOGS

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