MODEL DISTRIBUSI DIAMETER LIMA JENIS POHON PADA HUTAN TROPIKA BASAH DI KABUPATEN MAMUJU, SULAWESI BARAT
Abstract: The objective of
this research is to establish the most suitable tree diameter distribution
model for five tree species on tropical rain forest in Mamuju District. This
research was conducted on two locations. The 50 square plots were sampled
systematically for seedling, sapling, pole and tree measurements of bintangur,
jambu-jambu, lada-lada, matoa and nyatoh species. The distance among plots was
50 m. Variables to be measured were stem number of seedlings to trees and tree diameter
at breast height (1,3 m) of saplings to trees. About 70% of the data were used
to establish the best model, the rest of 30% were used to validate the model.
Models to be analyzed were fourth-order semi-logarithmic transformed polynomial
function, Weibull density function and monotonic decreasing Weibull function.
The results show that the five tree species have a similar diameter
distribution pattern. The shape of this distribution is the typical of
uneven-aged stand distribution on natural forest, namely reversed J shape. The
most suitable model for five species is second-order semi-logarithmic
transformed polynomial function.
Penulis: Beta Putranto
Kode Jurnal: jpkehutanandd100043
