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Prediction of Oak Site Index in the Ridge and Valley Region of Pennsylvania

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Abstract:

A site index prediction equation for oak stands was developed from data of 39 permanent sample plots in southcentral Pennsylvania. The utility of the equation, SI50 = B0 + B1 (slope position) + B2 (slope) + B3 (depth of A1 + A2 + B4 (silt) + B5 (Ca) + B6 (Mg) + B7 (N), further tested on 16 additional plots, compared favorably with a standard method of site index determination. The prediction equation accounted for 79 percent of the variation in site index. Calcium, magnesium, and nitrogen concentrations in the A1 + A2 soil horizon were very important to the prediction of site quality on these soils. Forest Sci. 18:192-195.

Keywords: Quercus spp; terrain

Document Type: Journal Article

Affiliations: Professor of Silviculture, School of Forest Resources, Pennsylvania State University, University Park 16802

Publication date: 1972-09-01

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

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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