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Four sigmoid growth models are fit to basal-area data derived from increment cores and disks taken at breast height from oak trees. Models are rated on their ability to fit growth data from five datasets that are obtained from 10 locations along a longitudinal gradient across the states of Delaware…
Keywords: goodness-of-fit, parameter estimation, non-linear model
Source: Ecological Modeling. 174: 115-126.
We evaluated the stability of a complex regression model developed to predict the annual height growth of young Douglas-fir. This model is highly nonlinear and is fit in an iterative manner for annual growth coefficients from data with multiple periodic remeasurement intervals. The traditional…
Keywords: vegetation, density, non-linear model, sensitivity analysis
Source: Forest Science 56(6): 592-602