Increment Models for Some Plantation Grown Indigenous Meliaceae

Wien

1983

S. 145-154

4 Tab., 11 Lit. Ang.

Unselbständiges Werk

200145031

The periodic annual increments of the stemdiameters from stands of three Meliaceae species, were used to develop predictive increment models. The models considered were of the 'distance independent' type. These models were linear and logarithmic in form. Some sort of a weighting factor (Dmax) was included in the equations, to take account of the differential competition status of individual trees. The r values ranged from 0,37 to 0,634. Although the r values were small they were significant at p < 0,05. An age (30 years) was randomly chosen for observed diameters. The corresponding predicted values of diameters for the stands at age 30 years were obtained from a table of predicted diameters. Differences in the observed and predicted diameters were tested, using the Kolmogorov - Smirnov two-sample test. They were found not to be significantly different at (p < 0,05 and p > 0,01).