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    Author(s): Constance A. Harrington; Robert O. Curtis
    Date: 1985
    Source: Res. Pap. PNW-RP-358. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 14 p
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (213 KB)


    New height growth and site index curves for red alder (Alnus rubra Bong.) were developed from stem analysis data. The analyses use a reference (site index) age of 20 years and are applicable to natural stands between 5 and 50 years of age in western Washington and northwestern Oregon. The new curves are polymorphic and provide a better fit to observed patterns of height growth than the previously available curves. Although differences from previously available curves are not large, the new curves should be an improvement, particularly for use in short-rotation management. Recommendations associated with the new curves for converting breast height age to total age vary with site quality. Relationships between red alder height growth or site index and selected site characteristics are briefly discussed.

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    Harrington, Constance A.; Curtis, Robert O. 1985. Height growth and site index curves for red alder. Res. Pap. PNW-RP-358. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 14 p


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    increment (height), site index, site class, red alder, Alnus rubra

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