Citation
Hashim, Muhammad Amirul Asyraf
(2016)
Quantitative assessment of three Shorea spp for Sungai Menyala Virgin Jungle Reserve, Negeri Sembilan.
[Project Paper Report]
Abstract
In Peninsular Malaysia, Virgin Jungle Reserve (VJR) has been established since the
1950’s and are initially known as Permanent Forest Reserve. Due to its status as a
Permanent Forest Reserve, the forest has been spared from timber exploitation from
the gazetting to the status since 1950. Since then, this forest area changed naturally
and this condition is called a Virgin Jungle, meaning it has not been developed or
exploited for commercial purposes. This study made use of the abundant tree stands
from the family Dipterocarpaceae, genus Shorea present inside the forest reserve.The
study was focused on three Shorea species, which all Shorea parvifolia, Shorea
acuminata and Shorea leprosula. The objective of this study were to determine the
abundance and distribution of these three species and to investigate the difference in
basal area and volume of the three Shorea species. The primary data for each species
were collected from a belt-transect plot sited at compartment 6 of the forest reserve
with covering 2.0 ha. The population density of these three Shorea species, has an
average population density for Shorea leprosula of 17.5 trees per hectare, for Shorea
parvifolia, 14 trees per hectare and for Shorea acuminata 13.5 trees per hectare. The
distribution of trees indicates the adverse characteristic of De iocourt’s factor
procedure (reverse J distribution) where stems frequencies increase with the increase
in DBH. The growth stage distribution has a growth stage distribution of 3.5% small
trees, 37.8% medium trees, 58.7% large trees. From the results for each species in
this study, it can be concluded that the study area has a high number of medium sized
trees as its main forest structure with Shorea parvifolia being the dominant stand with
the biggest number of individuals among the other two but with Shorea leprosula
having the biggest volume and basal area, followed by Shorea parvifolia and Shorea
acuminata. This study will give a guideline for relevant authority on forest inventory
and stand structure determination of Sg.Menyala Permanent Forest Reserve.
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