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Title: A simulation study of hardwood rootstock populations in young loblolly pine plantations
Author: Weise, David R.; Glover, Glenn R.;
Source: Simulation. 51: 3
Publication Series: Miscellaneous Publication
Description: A computer program to simulate spatial distribution of hardwood rootstock populations is presented. Nineteen 3 to 6 yearold loblolly pine (Pinus taeda L.) plantations in Alabama and Georgia were measured to provide information for the simulator. Spatial pattern, expressed as Pielou's nonrandomness index (PNI), ranged from 0.47 to 2.45. Scatterplots illustrated no relationship between pattern, species relative density, site preparation, or stand age. Newnham's point pattern generator was modified to reduce execution time. Equations to predict program inputs as a function of PNI and desired number of points were developed for uniform, random, and randomly clumped populations. Total rootstock height distribution was fitted using a two-parameter, left- and right-truncated Weibull function. Crown area was determined conditionally by total rootstock height. The simulator may be used to generate populations for evaluating different sampling methods for hardwood rootstock attributes or in individual tree growth and yield models
Keywords: hardwood, loblolly pine, spatial pattern, Pielou's index
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Weise, David R.; Glover, Glenn R. 1988. A simulation study of hardwood rootstock populations in young loblolly pine plantations. Simulation. 51: 3
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