Bark-Tissue Thickness of Coastal Western Hemlock in British Columbia

Authors

  • A. E. Bramhall
  • R. M. Kellogg
  • R. W. Meyer
  • W. G. Warren

Keywords:

<i>Tsuga heterophylla</i>, bark, mensuration

Abstract

Bark-tissue thicknesses of coastal western hemlock are reported. Variation in these characteristics is considered between sites, trees, and height positions. Total bark thickness did not vary significantly with site, averaging 7.4 mm, 12.2 mm, and 12.6 mm for the top, middle, and butt height positions, respectively. However, the relative contribution of the individual tissues to the total thickness did vary with site. The thickness of all bark characteristics varied with height, being least at the top position, but differing very little between middle and butt positions.

References

B.C. Forest Serv. 1976. Annual report 1975. Victoria, B.C.nChang, Y. P. 1954. Bark structure of North American conifers. USDA Tech. Bull. 1095, Washington, D.C.nDen Outer, R. W. 1967. Histological investigations of the secondary phloem of gymno-sperms. Mededel. Landbouwhogeschool, Wageningen, The Netherlands.nEsau, K. 1960. Anatomy of seed plants. John Wiley, New York.nSmith, J. H. G., and Kozak, A. 1967. Thickness and percentage of bark of the commercial trees of British Columbia. Univ. B.C., Fac. For., Vancouver, B.C.nSmith, J. H. G. 1971. Thickness, moisture content, and specific gravity of inner and outer bark of some Pacific Northwest trees. For. Prod. J. 21(2):38-40.n

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Published

2007-06-19

Issue

Number 3 / Fall 1977

Section

Research Contributions

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