Polynomial Models to Study and Present Within-Tree Variation of Wood Properties
AbstractA method is presented for obtaining information on within-tree variation for wood properties. The polynomial models resulting from this study provide a technique for statistical analysis and for plotting within-tree variation patterns of fiber, vessel, and ray percentages as well as ring widths. With this method, it is possible to examine the oblique, horizontal, and vertical variation patterns of different wood properties, both statistically and graphically; hence, statistical inference can conveniently be made on within-tree patterns of variation. This can provide not only information of value in tree improvement work, but also a better understanding of the variability of wood.
Draper, N., and H. Smith. 1967. Applied regression analysis. New York, New York. J. Wiley, p. 163-195.nDuff, G. H., and N. J. Nolan. 1953. Growth and morphogenesis in the Canadian forest species. I The controls of cambial and apical activity in (Pinus resinosa Ait). Can. J. Bot., 31: 471-513.nKandeel, E. S. A., and D. W. Bensend. 1969. Structure, density, and shrinkage variation within a silver maple tree. Wood Sci., 1: 227-237.nRichardson, S. D. 1961. A biological basis for sampling in studies of wood properties. TAPPI, 44: 170-173.nSaucier, J. R., and J. R. Hamilton. 1967. Within-tree variation of fiber dimensions of green ash. Georgia Forest Res. Paper 45.nWalter, J., and J. Soos. 1962. The vertical and horizontal organization of growth in some conifers of British Columbia. Faculty of Forestry Paper 51.n
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