This ar t ic le i s an in troduct ion to the computevsoffwave used by the Potential Relative Increment (PRI) approach to opt imal tree diameter growth modeling. These DOSpvograms extract quali f ied tree andplot data,from the Eastwide Forest Inventory Data Base (EFIDB), calculate relat ive tree increment , sort for the highest relat ive iucrements by diameter class, and generate an ASCIIjile fo...

Ecosystem-level estimates of the effect of lianas on tree growth in mature tropical forests are needed to evaluate the functional impact of lianas and their potential to affect the ability of tropical forests to sequester carbon, but these are currently lacking. Using data collected on tree growth rates, local growing conditions and liana competition in five permanent sampling plots in Amazonia...

Tree basal area (ba) or diameter at breast height (dbh) are universally used to represent tree secondary growth in individual tree based growth models. However, the long-term implications of using either ba or dbh for predictions are rarely fully assessed. In this analysis, Dba and Ddbh increment equations were fit to identical datasets gathered from six conifer and four hardwood species grown ...

The main objectives of the study were to (1) determine response diameter growth silver fir, Scots pine, and black pine in Central European seminatural forests tree, stand, environmental factors (2) test for differences their rate on different soils. Based 26,291 permanent sampling plots (500 m² each), we developed a linear mixed-effects model increment each these tree species. models explained ...

—Most optimal tree diameter growth models have arisen through either the conceptualization of physiological processes or the adaptation of empirical increment models. However, surprisingly little effort has been invested in the melding of these approaches even though it is possible to develop theoretically sound, computationally efficient optimal tree growth models using inventory data. The Pot...

37 In coastal forests of the Pacific Northwest, young coniferous plantations typically contain a 38 mixture of planted and natural Douglas-fir (Pseudotsuga menziesii) and western hemlock (Tsuga 39 heterophylla). Swiss needle cast (SNC) disease inhibits the growth of Douglas-fir to varying 40 degrees in these stands, depending on SNC severity. In addition to the value differential between 41 Dou...

Using clim ate records from 20 weather stations, we investigated the changes in temperature, rainfall, and length of the growing season between 1961 and 1995. To establish a link between changes in climate and tree growth, we analyzed radial increment rates from tree rings over the same period. Our results indicate: (1) no change in precipitation over the period; (2) a highly significant increa...