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In a study of height growth patterns of quaking aspen (Populus tremuloides Michx.) in Minnesota, Wisconsin and Michigan, we represented the height-age pattern using a second order ordinary differential equation with environmentally governed parameters. Solving a second order differential equation that has been converted to a system of two first order equations requires knowledge of, or information...
The comprehensive graphical matrix of even-aged stand property inter-dependence, first developed by E.V. Bakuzis, facilitates identification and understanding of the relationship among stand properties. Bakuzis' original matrix of eight stand properties, contained 64 cells, was symmetric, but only about 11 of the 64 relationships had shown enough regularity among species to have been named. In this...
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