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Black Spruce Growth and Yield At Various Densities in the Ontario Clay Belt

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This report presents a simple method of preparing variable-density yield tables for unmanaged pulpwood stands classified by site types, from semipermanent plots. Stand density is defined by basal area per acre, and site classification is based on physiographic features, ecoclimate, moisture regime, and permeability. The methods of obtaining continuous development curves include both graphical and multiple-regression techniques. Basal-area growth curves are obtained (1) by relating basal-area increment to the initial basal area and age, and (2) by accumulating the predicted increments. The predicted increase in basal area compared with the measured increase on plots not included in the preparation of the curves shows better agreement than is obtained by using either normal or empirical yield tables. Forest Sci. 16: 183-195.

Keywords: Picea mariana; basal area; yield tables

Document Type: Journal Article

Affiliations: Research Scientist, Forest Management Instit., Canadian Forest. Serv., Ottawa

Publication date: 1970-06-01

More about this publication?
  • 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.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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