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Tree Grade Prediction for Mississippi Bottomland Hardwoods Using Discriminant Analysis

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Information from 150 permanent plots in Mississippi bottomland hardwood stands was used to construct linear discriminant functions to predict individual tree grade for sweetgum (Liquidambar styraciflua L.), and three species of red oak: cherrybark (Quercus pagoda Raf.), water (Quercus nigra L.), and willow (Quercus phellos L.). Two versions of the functions were produced, one general set for all trees greater than 9.0 in. in diameter (including culls), and another set for trees grade 3 or better. The general set of discriminant functions successfully predicted tree grade for 50% to 63% of the trees in the database, depending on species. Prediction success improved to a range of 62% to 81% when culls were excluded from the analysis. South. J. Appl. For. 17(3):120-123.

Document Type: Journal Article

Affiliations: USDA Forest Service, Southern Forest Experiment Station

Publication date: 1993-08-01

More about this publication?
  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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