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Estimating Site Index for White and Black Oaks in Indiana From Soil and Topographical Factors

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The standard site-curve method of determining site index has limited application in upland central hardwoods as many stands show signs of past suppression, or are uneven-aged, grazed, or periodically burned. Therefore, the soil-site method was used to relate height of trees in unsuppressed, even-aged stands to age and features of soil and topography. Site-index values for white and black oak in southern Indiana were then calculated from the derived relationships. Based on 154 site plots it was found that site index for white and black oak was strongly related to A-horizon thickness, slope position, silt content of the B1 horizon, clay content of the B horizon and material below this zone, and stone content of the B2 horizon. Slope aspect and slope shape are additional features that influence site index of white oak. Site tables based on these features were prepared to estimate site index of white and black oak on upland soils of southern Indiana. The principles are applicable elsewhere.

Document Type: Journal Article

Affiliations: Assistant Professor of forestry at the University of Vermont

Publication date: May 1, 1968

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

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