Definitions and Descriptions

  • W. E. Hillis
Part of the Springer Series in Wood Science book series (SSWOO, volume 4)


In cross-sections of freshly felled mature trees a number of zones can usually be observed, a pale-colored outer zone — the sapwood — and a dark-colored inner core that is often situated concentrically — the heartwood. Both these zones change in appearance on storage and always become darker, especially with some of the heartwoods of hardwood species. Between these major zones there may be a third zone, depending on the species, either an intermediate zone of wood of varying colors and width, or a transition zone paler in color than the surrounding tissues and narrow in width.


Growth Ring Sapwood Area Heartwood Formation Resin Pocket Crown Class 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • W. E. Hillis
    • 1
    • 2
  1. 1.Division of Chemical and Wood TechnologyCSIROClaytonAustralia
  2. 2.MelbourneAustralia

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