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An Equation for Predicting Oak Site Index without Measuring Soil Depth

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A regression equation for predicting oak site index from measurements of aspect, slope position, and slope percent was developed on three sandstone and shale soil series for the mountain province in West Virginia and a part of Maryland. Based on data previously used to develop a predicting equation from the above three factors plus total soil depth, this new equation, without the use of soil depth, provides for almost as accurate prediction. The necessary data for prediction can be collected much more easily because laborious soil-depth observations are not required. The close relationship between soil depth and the two topographic factors, slope position and slope percent, permits the elimination of soil depth from the estimating equation.
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Document Type: Journal Article

Affiliations: Research Forester, Northeastern Forest Expt. Sta., Forest Service, U. S. Dept. Agric., Elkins, W. Va.

Publication date: 01 May 1964

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