Skip to main content

Foliage and Wood Production in Unthinned Black Spruce in Northern Quebec

Buy Article:

$21.50 plus tax (Refund Policy)

In a pure, 65-year-old, upland stand of Picea mariana (Mill.) B.S.P., 20 trees were felled, measured, weighed and their crowns collected for drying and separation of needles and branches. Diameter tallies were made of adjacent sample plots. A computer was used to determine diameter class distributions of tree and stand components and some of their linear regressions with dbh and total dry needle weight per tree. The living trees contained 74,157 kg (oven-dry weight) of bole wood, 10,791 kg of live branches and 8,556 kg of needles per hectare. The needles had 9.8 ha of surface area per hectare about one-sixth being lost annually in mortality. The needle weight per tree was linearly related to stem volume increment and logarithms of needle weight, number, surface area. Crown volume increased linearly with the logarithm of tree diameter. Dominant trees were apparently less efficient producers of stem height and volume per unit weight of needles than suppressed trees; this lower efficency could not be related to a greater proportional live branch weight per unit weight of needles, nor was any ready differentiation noted between sun and shade needles. Dominant, intermediate and suppressed trees were estimated to have produced 0.26, 0.31 and 0.34 kg of dry stemwood per annum, representing 25, 62, and 13 percent, respectively, of the total stemwood growth in the last decade.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Journal Article

Affiliations: Research Assistant, Pulp and Paper Research Institute of Canada, Montreal, Quebec

Publication date: 1964-03-01

More about this publication?
  • Important Notice: SAF's journals are now published through partnership with the Oxford University Press. Access to archived material will be available here on the Ingenta website until March 31, 2018. For new material, please access the journals via OUP's website. Note that access via Ingenta will be permanently discontinued after March 31, 2018. Members requiring support to access SAF's journals via OUP's site should contact SAF's membership department for assistance.

    Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
  • Submit a Paper
  • Membership Information
  • Author Guidelines
  • Podcasts
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more