Density, ages, and growth rates in old-growth and young-growth forests in coastal Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/7s75dc822

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • We studied the ages and diameter growth rates of trees in former Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) old-growth stands on 10 sites and compared them with young-growth stands (50-70 years old, regenerated after timber harvest) in the Coast Range of western Oregon. The diameters and diameter growth rates for the first 100 years of trees in the old-growth stands were significantly greater than those in the young-growth stands. Growth rates in the old stands were comparable with those from long-term studies of young stands in which density is about 100-120 trees/ha; often young-growth stand density is well over 500 trees/ha. Ages of large trees in the old stands ranged from 100 to 420 years; ages in young stands varied by only about 5 to 10 years. Apparently, regeneration of old-growth stands on these sites occurred over a prolonged period, and trees grew at low density with little self-thinning; in contrast, after timber harvest, young stands may develop with high density of trees with similar ages and considerable self-thinning. The results suggest that thinning may be needed in dense young stands where the management objective is to speed development of old-growth characteristics.
Resource Type
Date Available
Date Issued
Citation
  • Tappeiner, J.C., D.W. Huffman, D.D. Marshall, T.A. Spies, and J.D. Bailey. 1997. Density, ages, and growth rates in old-growth and young-growth forests in coastal Oregon. Canadian Journal of Forest Research 27(5): 638-648.
Academic Affiliation
Series
Keyword
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Submitted by Alison Moldenke (alison.moldenke@oregonstate.edu) on 2010-02-15T22:10:45Z No. of bitstreams: 1 Tappeiner_etal97.pdf: 164393 bytes, checksum: 4ac0c042001e0c91b12920a1b659b0aa (MD5)
  • description.provenance : Approved for entry into archive by Caryn Davis(caryn.davis@oregonstate.edu) on 2010-02-15T23:48:45Z (GMT) No. of bitstreams: 1 Tappeiner_etal97.pdf: 164393 bytes, checksum: 4ac0c042001e0c91b12920a1b659b0aa (MD5)
  • description.provenance : Made available in DSpace on 2010-02-15T23:48:45Z (GMT). No. of bitstreams: 1 Tappeiner_etal97.pdf: 164393 bytes, checksum: 4ac0c042001e0c91b12920a1b659b0aa (MD5) Previous issue date: 1997-05

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items