BANGLADESH JOURNAL OF FOREST SCIENCE
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
The feasibility of preservative treatment of golla cane {Daemonorops
jenkinsiana (Griff.) Mart.}, by soaking method was tested in the present study.
Cane samples of 1 m, 2 m, and 3 m long were soaked with 10% borax and boric
acid solution. The study revealed that adequate dry salt retention (DSR) in the
above samples could be obtained in 3 days, 4 days, and 5 days respectively. The
DSR values obtained were much higher than those of the specification (4 kgm’3)
of Indian Standard. Dry cane (12.87% me) samples up to 3 m to 4 m long could
be treated easily within 5 days, but the same dimension of green cane (150%
me) samples needed 8 days. DSR value of air-dried sample was about 6 times
higher than that of the green samples.
Physical and mechanical properties, durability and treatability characteristics of
21 timber species have been collated. Enduses of these species have been evaluated.
Based on the various uses, the species have been recommended as priority species for
plantation.
The production of pulp can be substantially increased by addition of anthraquinone
as a catalyst in kraft and soda pulping. However, a greater benefit can be
achieved in soda pulping. In assessing jute fibre as an alternative raw material for
pulping, it shows a promising prospect. The use of neutral sulphite anthraquinone
process can make conifer-like pulp from jute fibre.
Seedlings of Bambusa tidda Roxb. and Dendrocalamus strict us Nees were grown in the
nursery under four different light conditions, viz. sunlight, partial sunlight, shade, and
6 hours photoperiod up to nine months of age. Almost all the seedlings were dead (80 to
90%) under shade and 6-hr grolux electric light photoperiod conditions after 200 -270
days. Survival was highest (80-95%) under both sunlight and partial sunlight condition.
The seedlings were comparatively healthy, green and tall under partial sunlight. Under
these two light conditions seedings started clump formation within three months of age.
The clump formation was delayed and a very few bamboo seedlings formed weak clumps
under shade and 6 hours photoperiod conditons.
The paper describes particleboard making characteristics of three common bamboo
species, namely, Banibusa balcooa, Banibusa vulgaris and Melocaiina baccifera grown in
Bangladesh. Urea formaldehyde resin was used as the binder. The particleboards from
these bamboo species compare almost an equal strength properties with those from
wood species.
Gamar defoliator, Calopepla leayana Latr. (Chrysomelidae : Coleoptera) is a major
defoliator of gamar (Gnielina arborea RoxbJ in Bangladesh. Both the larva and the adult
feed on the leaves making irregular holes on them. The distribution, description and
biology of various developmental stages of the pest are provided. The pest has three
generations in a year, hibernating as an adult from November to May. A common pupal
parasite, Brachymeria sp. and an egg parasite, Tetrasticlnis sp. were recorded. Biological,
chemical, physical and mechanical method for the control of the pest have been
discussed.
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.
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.
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
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.
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.
