Partial cutting of western hemlock and sitka spruce in southeast Alaska.

Wilbur A. Farr; A.S. Harris

Treesearch

Partial cutting of western hemlock and sitka spruce in southeast Alaska.

Informally Refereed

Authors:

Wilbur A. Farr, A.S. Harris

Year:

1971

Type:

Research Paper

Station:

Pacific Northwest Research Station

Source:

Res. Pap. PNW-RP-124. Portland, OR: U.S. Department of Agirculture, Forest Service, Pacific Northwest Research Station. 15 p

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Download (PDF 1.04 MB): https://research.fs.usda.gov/download/treesearch/26249.pdf

Abstract

This study of response to partial cutting over a 17-year period in a 96-year-old stand of western hemlock-Sitka spruce at Karta Bay, Alaska, showed that crop trees left after partial cutting were able to increase or maintain &out the same rate of diameter growth as before thinning, but growth in diameter of trees in an unthinned stand followed the norma2 pattern of decline. Opening the stand stimulated epicormic branching, thus reducing quality of trees in the future. Partially cut plots became well stocked with conifer regeneration, mostly western hemlock.

Keywords

thinning, rotation age, western hemlock, Tsuga heterophylla, sitka spruce, Picea sitchensis

Citation

Farr, Wilbur A.; Harris, A.S. 1971. Partial cutting of western hemlock and sitka spruce in southeast Alaska. Res. Pap. PNW-RP-124. Portland, OR: U.S. Department of Agirculture, Forest Service, Pacific Northwest Research Station. 15 p