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Response of Three Conifer Species to Site Preparation and Shrub Control

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A 5-year field study was conducted to determine the effect of three methods of site preparation in combination with three levels of shrub suppression on subsequent microenvironmental, shrub and tree responses. Shrub canopy volume and survival, growth, and water potential of planted ponderosa pine (Pinus ponderosa Dougl. ex P. & C. Lawson.), sugar pine [Pinus lambertiana Dougl. (Strobus L. Mold.)], and white fir [Abies concolor (Gord. & Glend.) Lindl.] were measured. Ponderosa pine survived better than sugar pine or white fir regardless of shrub presence or absence. Shrub canopy volume did not influence tree survival; however, the presence of shrub debris from some treatments increased planting difficulty and resulted in increased tree mortality. Predawn and midday water potential, height, stem diameter, and canopy volume of conifers were highest when shrub canopy volumes were low. Forest Sci. 32:61-77.

Keywords: Abies concolor; Pinus lambertiana; Pinus ponderosa

Document Type: Journal Article

Affiliations: Associate Professor of Botany, Department of Forest Science, Oregon State University, Corvallis, OR 97331

Publication date: March 1, 1986

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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