bjfs_logo-removebg-preview

BANGLADESH JOURNAL OF FOREST SCIENCE

A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute

ISSN - Print: 1021-3279 | Online: -
Abstract:

The properties of particleboard produced from l-,2-,3- and 4-year old Bambusa
vulgaris Schrad, the commonest village bamboo in Malaysia, were ascertained.
Culms of two years old or more were found to yield good particles for particleboard
manufacture. Three particleboards with the density of 561,641 and 721 kg/m^ were
produced by using urea formaldehyde resin as the binder at the resin contents of 6,
8 and 10%, pressing time of 6 minutes and temperature of 160°C. All the boards
tested passed the minimum requirements of the British Standards BS 5669-1989.
This indicates the suitability of this bamboo species for the manufacture of
particleboard.

Abstract:

The survey on visitors of Bhawal National Park reveals that picnicking was the
highest participated outdoor recreation activity (79.62%), and sightseeing was the
second highest activity (12.83%) with respect to all socio-economic variables viz.
gender, age, education, and income. Male visitors (82.26%) are higher than the
female visitors (17.74%). Age-groups of 26-35 and 16-25 years are more interested
in participating outdoor recreation activities which are 40.38% and 35.09% respectively.
Participation in outdoor recreation activities increases with the increase of
education level. Majority of the visitors are from middle class (47.19%) and high
middle class (24.34%). Visitors from all gender, age, education level and class
participate in outdoor recreation activities in Bhawal National Park. So, development
of proper planning and scientific management of outdoor recreation facilities
of the park are needed in order to ensure sustainable benefits to the visitors.

Abstract:

Species diversity and economic returns of five different components namely
timber, fruit, fuelwood, vegetables and non-timber forest products (NTFPs) in
homestead agroforestry system were studied at two smallest administrative units
(Union) namely Betagi and West Demsha under Chittagong district. Most of the
available species under each component at both locations were common. With little
exception, the frequency distribution of each component species was similar in all
household categories at each study location. Tree components for timber and fruit
were more in West Demsha than in Betagi, whereas components for fuelwood,
vegetables and NTFPs were more in Betagi. However, the economic returns from
vegetable component were more than those from any other component in both the
study locations. The results indicated that homestead agroforestry systems in the
study locations were traditional, and generally immediate income generating
component like vegetables had been selected by the small and medium households
in the establishment of such system.

Abstract:

Twelve high density (density range 0.775-1.031 g/cm^ lesser used/unused
hardwood species, viz. bhadi (Lannea coromandelica), bahera (Terniinalia belerica),
haritaki (Tarminalia chebula), jam (Syzygium sp.) kanak (Schima wallichii), minjiri
(Cassia simaea), batna (Quercus spj, goda (Vite.x peduncularis), gutguttya (Protium
surratum), homalium (Homalium bhamanse), itchri (Anogeissus acuminata) and
nageshwar (Mesneferrea) were studied to determine their pulp making characteristics.
An active alkali change of 14% and sulfidity of 25% were used in all cooks. It has
been observed that most of these species produce good quality pulp.

Abstract:

In November 1989 two clumps of Thyrsostachys regia (Munro) Bennet (T. siamensis
Kurz ex Gamble) flowered in Bangladesh Forest Research Institute Bambusetum,
Chittagong. Flowering was of gregarious type and the clumps died after flowering.
Floral buds bloomed after 4-5 weeks of their initiation. There are two florets in a
spikelet and the flowers are protandrous. Anthesis generally occurred in the morning
and occasionally in the afternoon. Anther dehiscence started at noon and continued
for the whole afternoon. When in full bloom two bee species (Apis dorsata and an
unidentified one) were found to visit the flowers. Fruits matured after 60-70 days of
blooming. Squirrels and three bird species, Lonchura punctulata, L. striata and
L. malabarica) were found to feed on matured seeds.

Abstract:

Seed germination remains to be an unsolved problem in teak. Studies made on
radiography and seed technological aspects using drupes from India and Thailand
disclosed certain important features. Radiography has been standardised for sharp
image to read the anatomical potential of seed. Teak drupes from two provenance
differed in size and weight within and between seedlots. Radiograms revealed the
development of 4, 3,2 and 1 seed in the tetracarpellary ovary in the order of 1,5,19
and 48% with 27% empty drupes. When drupe size decreased the percentage of
single-seeded and empty drupes increased correspondingly. Teak drupes possess
ontogenic and dormancy problems posing challenge to germination

Abstract:

Diversity and distribution pattern of tree species of Bamu Reserved Forest of
Cox’s Bazar were studied by count plot method for analysing stand composition. A
total of 85 tree species were recorded from the forest of which 77 species belonging
to 30 families were identified. Leguminosae and Moraceae ranked top with seven
species followed by Verbenaceae and Euphorbiaceae each with six species. The
Importance Value Index (IVI) of each species was calculated to characterize the
composition of vegetation. Bursera serrata showed the highest (18.91) IVI followed
by Artocarpus chania (14.82), Pterospernium acerifolium (14.04), Hopea odorata (13.73),
Glochidion multiloculare (13.19) and Vitex peduncularis (10.51). Distribution of the
number of individuals of each species in nine diameter classes ( 80cm with
10cm intervals) were calculated with respect to total individuals. It showed that
maximum percentage of individuals (35.08%) belonged to 80cm) represented the lowest percentage (1.82%).
Bursera serra tahad the highest (8.04%) percentage distribution followed by Glochidion
multiloculare (7.67%), Dipterocarpus turbinatus (5.85%), Hopea odorata (5.36%),
Pterospernium acerifolium (4.87%), Bauhinia acuminata (4.03%) and Lagerstroemia speciosa
(3.05%). The rest of the species had values < 2.8%.

Abstract:

This paper describes the community structure of two prominant forest types i.e.,
moist deciduous miscellaneous and riverian Khair-Sissu forests of Himalayan foot
hills in relation to their analytic and synthetic characters. The importance value index
(IVI) values recorded from moist deciduous miscellaneous forest were maximum for
Mai lotus philippinensis (113.28) and minimum for Cassia fistula (6.54). Similarly the IVI
values in the riverian Khair-Sissu forest were maximum (218.02) for Dalbergia sissoo
and minimum (16.46) for Sapium insigne. The species diversity (2.3796), beta diversity
(2.9166) and equitability (14.6700) values were observed as maximum in moist
deciduous miscellaneous forest, whereas the values for these parameters were minimum
(0.8507, 1.3636 and 2.4915 respectively) in the riverian Khair-Sissu forest.
However, the values for concentration of dominance was maximum (0.6827) in
riverian Khair-Sissu forest and minimum (0.1071) in moist deciduous miscellaneous
forest. The soils in both the forest types were observed as alluvial, coarse textured and
almost neutral in reaction.

Abstract:

The beetle, Podontia qiiatuordecinipunctata Linn. (Chrysomelidae : Coleoptera) is a
major defoliator of amra (Spondias pinnata (L. f.) Kurz and S. dnlcis Forst, f.) in
Bangladesh. Besides Spondias spp., the pest also attacks Ficus elastica Roxb. and
Duabanga grand iflora (Roxb. ex DC) Walp. Both the adult and the larva cause partial or
complete defoliation affecting the growth of the plant seriously. The peak infestation
period occurred during August and September. Younger trees are most heavily
attacked. The incidence is more pronounced in the hilly areas than in the plains. The
pest was controlled by foliar application of cypermethrin (Ripcord 10 EC) @ 12 ml/10
litres of water.

Abstract:

The genus Xylocarpus (Family: Meliaceace) is
represented by five species, namely X.australisicus
Raidley, X. granatum Koening, X. molucccnsis Lamk.
Roem, X. gangeticus Parkison and X. parvifolius,
and they are distributed in the tropical mangrove
forests (Saenger ct al. 1993). The two species
X. granatum and X. molucccnsis are found also in
the Sundarbans, Khulna (Chaffey and Sandom
1985) and Chakaria Sundarbans of Chittagong
(Brandis 1906, Troup 1921).

Last Published
About BJFSBD.ORG

Welcome to the Bangladesh Journal of Forest Science (BJFS) – a leading platform for advancing the knowledge and understanding of forest science in Bangladesh and beyond. Established with a commitment to excellence, BJFS serves as a cornerstone for researchers, practitioners, and enthusiasts dedicated to the sustainable management and conservation of forest ecosystems.