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    Author(s): Donald J. DeMars
    Date: 2000
    Source: Gen. Tech. Rep. PNW-GTR-496. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 60 p
    Publication Series: General Technical Report (GTR)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (1.4 MB)

    Description

    The lack of growth and yield information for young even-aged western hemlock (Tsuga heterophylla(Raf.) Sarg.)-Sitka spruce (Picea sitchensis (Bong.) Carr.) stands in southeastern Alaska served as the impetus for a long-term stand-density study begun in 1974. The study has followed permanent growth plots in managed stands under various thinning regimes. Between 1974 and 1987, 272 plots were established at 59 locations throughout southeastern Alaska. Remeasurement of the plots occurs every two to four years and will continue until harvest. Additional thinnings will occur on a portion of the plots. Future plans include extending the study through establishment of installations in stand types not currently represented. Once data for an entire rotation are obtained, a comprehensive set of growth and yield tables for various management regimes can be developed. This information will answer questions forest managers have on whether and when to thin a stand, at what level of intensity, and how frequently to enter the stand.

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    Citation

    DeMars, Donald J. 2000. Stand-density study of spruce-hemlock stands in southeastern Alaska. Gen. Tech. Rep. PNW-GTR-496. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 60 p

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    Keywords

    Thinning, stand density, southeastern Alaska, western hemlock, Sitka spruce

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