Silvicultural characteristics of Scaphium macropodum (Miq.) Beumée ex K.Heyne in some provinces of Southern Central Coast Region

Abstract

The research results of some silvicultural characteristics of Scaphium
macropodum in the Southern Central Coast Region showed that the species
has a natural distribution in rich, medium, and poor forest types. It was
suitable for warm and humid climate conditions, with the present of good
vegetation, emergent layer. The tree was well adapted to all types of terrain
from flat to high slopes especiallymountain sides; the average annual
temperature of 23 - 26
o
C, heavy rainfall (> 2,000 mm/year). It also prefered
good, porous, well drained, deep soil layer (> 80 cm), few mixed stone;
high humus and nitrogen content (3 - 4%), adapted to low pH soils (< 4).
The density of canopy layer varied quite widely, ranging from 650 trees/ha
in poor forest to 1,167 trees/ha in rich forest, total volume ranged from
70.00 m
3
/ha to 370 m
3
/ha. The participation of Scaphium macropodum in
the forest composition was not clear. Most surveyed individuals had good
quality. Tree density was not uniform in 3 forest types. Scaphium macropodum’s
seedlings regenerated entirely by seeds and had quite high quality with
the percentage of high - quality regenerated trees reaching 100%. The
ratio of individuals with the height of 50 cm or less accounted for
proportion 67.68%, the percentage of prospective regenerated trees was
low at only 10.71%.