@article {Alder:1979::59,
title = "A Distance-Independent Tree Model for Exotic Conifer Plantations in East Africa",
journal = "",
parent_itemid = "",
publishercode ="",
year = "1979",
volume = "25",
number = "1",
publication date ="1979-03-01T00:00:00",
pages = "59-71",
itemtype = "ARTICLE",
url = "https://www.ingentaconnect.com/content/saf/fs/1979/00000025/00000001/art00011",
keyword = "maximum basal area, dominance, Diameter distribution",
author = "Alder, Denis",
abstract = "A simulation model of diameter increment and thinning for Cupressus lusitanica, Pinus patula, and Pinus radiata growing in Kenya, Tanzania, Uganda, and Malawi is presented. The diameter distribution is defined by a vector of diameters corresponding to fixed cumulative probability points. Increment of the diameter vector is a function of basal area relative to maximum basal area, diameter relative to dominant diameter, and height as a site-dependent index of age. A general algorithm for simulating thinning of the cumulative distribution is developed based upon the probability that a given stem will remain after thinning. Validation studies using permanent sample plot data for the 3 species show a standard deviation of percentage residuals for total volume prediction of 12-19 percent; they also show, through simulation of spacing experiments, that the model is accurate over a range of initial stockings from 120 to 1,400 stems/hectare. Forest Sci. 25:59-71.",
}