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A Growth Definition for Stocking: Units, Sampling, and Interpretation

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Abstract:

This paper proposes that forest stocking data are more relevant to managerial judgments if stocking is defined in units of current volume increment in relation to potential site productivity than if it is defined in the conventional units of tree size. The relation of growth to diameter is used to devise an efficient subsampling procedure to estimate growth. Then, site utilization is the ratio of current growth to potential productivity of a fully stocked stand on the same site at the same stage of development. Stand composition and structure computed from this ratio provide measures that reflect current changes in these characteristics. Finally, a summarization procedure and examples of interpretation of this new definition of stocking in terms of growth are given. With this method, when stocking objectives are being established, the economic elements in planning can be introduced independently of the silvicultural data collected in forest inventory. Thus, site utilization data from one inventory can be used to describe the condition of the forest with regard to a multitude objectives.

Keywords: Stand density; occupancy; site utilization

Document Type: Journal Article

Affiliations: Principal Mensurationist, U. S. Dept. of Agric., Forest Service, Intermountain Forest and Range Expt. Sta., Ogden, Utah 84401

Publication date: 1969-09-01

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

    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
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