Author

Howard W. Fox

Publication Date

1970

Document Type

Dissertation/Thesis

First Advisor

Guest, B. Ross||Bullington, Robert A. (Robert Adrian), 1908-2001

Degree Name

M.S. (Master of Science)

Department

Department of Geography

LCSH

Forests and forestry--Illinois||Oak

Abstract

For intensive management of forest properties it is essential to know the per cent of cull occurring in the various species on various sites. This study describes the technique used at Sinnissippi Forest, in northern Illinois to obtain these cull factors for well managed upland oak timber. The forest stands are described giving past history and present management policies. Soil types and their relationship to growth and volume are also mentioned. A random selection of sample trees was taken and measurements were made both before and after felling to determine form factors for a local volume table and to determine gross and net volumes within the merchantable height. The merchantable logs were taken to the mill and the actual board feet of lumber sawn was recorded. It was found in this study that cull factors based upon the percentage of total cull to calculated gross volume were 6.0 per cent, 7.5 per cent and 12.9 per cent for white oak on "good", "medium", and "poor" sites respectively. For black oak, it was determined that the cull was 10.8 per cent and 11.5 per cent for "medium" and "poor" sites, there being little or no black oak on "good" sites. Red oak on "good" and "medium" sites was found to have a cull of 7.3 per cent and 11.3 percent respectively. There was little or no red oak to be found on "poor" sites. Although the per cent of cull was also determined for site alone and for species alone, the application of these factors is not considered as accurate as applying cull factors to species by sites.

Comments

Includes bibliographical references.||Includes maps.

Extent

vi, 39 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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