A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
INTRODUCTION :
In agreement with the United. Nations Organisation’s programme
on the promotion of economy and at the request of Food and Agriculture
Organisation ( P.A.Oo ) U.N.O., the Soviet Union organised the International
Symposium on Forest Influences and Watershed Management from.August 17 to
September 6,1970 .
Month
July, 1969. 27.66” 35.3%
August,1969. 27.97” 37-5% 89°F
September,1969. 12.80” 80. b%
” T H E ENO.”
{for the
(month.
METEOROLOGICAL DaTA FOR THE PERIOD
JULY-SEPTEMBER,1969 RECORDED AT THE
FOREST RESEARCH INSTITUTE METEOROLOG1CAL STATION.
73 °F
92°F 75.9°F
93 °F
Introduction :
■ Watershed management is concerned with the hydrologic
effects of land use and vegetative management. Water is considered
a product of the land which, within limits set by nature, can be
managed just as other renewable natural resources. In watershed
management the emphasis is not on harnessing water in streams but
on managing on the land itself, before it enters the streams or
.ground water basins. Watershed management may be called as handmaid of Engineering Water Development. This is most evident where
engineering structures erected for better water supply and regulations of stream discharge are threatened by erosion and premature
sedimentation, where the remedy lies in the introductionof conservative land use practices and suitable vegetation patterns combatable with the water producing function of
Investigations were carried, out on the Kraft Pulping of Albizzia
moluccana , a fast growing exotic wood species • In the pulping process
the cooking time was of 3 hours’ duration – 1 hour to raise the temperature
to 17O°C and 2 hours at that temperature . Pulp yield of 49 38$ was
obtained at the optimum condition . The properties indicate that high
quality writing, printing and wrapping paper can be manufactured from this
pulp at low chemicals and bleachability
INTRODUCTION :
ROLE OF FOKLblb, FOREST INDUSTRY,AND FOxtEST
EXTENSION &, KESLhRCH IN This EOuNOmY OF ThL_ COUNTRY.
with a little dispassionate thinking one is
likely to conclude that possibly no other natural resource
of the world has been so shabbily treated by the human beings
as the forests had been from the pre-historic days till
to-day, both collectively and individually. The original
inhabitants of the earth lived mostly as denizens of the
forests depended on forests and forest products for their
food and shelter. But they gradually cleared the forests
to their advantage to live a better life away from the
forests. New society has grown, new civilization built up,
new kingdom established, new economy flourished at the cost
of and on destruction of forests. But hardly people have
realised its importance or care to look back with any sense
of gratitude to this important natural resource of the world,
is so vital even in the modern civilized society. Forest and
forest products have been playing important role to the
nations in support of agriculture , in the growth of industry, giving protection in natural clamities and making provision for its growing population in earning livelihood and
thereby helping economic development of nations in earning
or saving foreign exchange. Forest products are again in
the service of any individual from T cradle to coffin1 but
very often an individual offers his gratitude by using his
injudicious brutal axe in cutting a mighty tree, which might
have grown for over hundred years serving his fellow men for
generations, and even without caring to replace this gift of
nature by planting atleast a similar one is a suitable pice.
Pakistan consists of two regions, viz., East and West
Pakistan, separated by nearly 1,000 miles of Indian territory,
climatic conditions, the soil and forest types of these two regions
are varied. On the national basis, less than ten per cent of the
total land area is classified as forest and range land. In-East
Pakistan, however, 17.3 per cent of the land area is forest land of
which approximately ten per cent is under scientific management and
the remaining 7.3 per cent is in the category of unclassed state
forests where shifting cultivation by the tribal people is practised.
Less than one third 01″ the forest area in West Pakistan is regarded
as productive forest hind and the balance is range land,
At the present time the forests cover 33,5 per cent of
Czechoslovak territory . Coniferous species cover 67 per cent of the area ,
of which Norway spruce takes 47 per cent , scotch pine 14 per cent ,
silver fir 5 per cent , larch and other conifers 1 per cent . Broad-leaved
trees share with 33 per cent , of which 17 per cent is taken by beech ,
7 per cent by oaks » 2 per cent by maples ash and elm . Other hardwoods
and softwoods tree species cover 7 per cent
One of the chief disadvantages of wood in use
is its inability to retain its shape with the change in
the moisture content. It shrinks and swells as water is
desorbed or adsorbed in the cell wall of the wood fibre
which is composed primarily of cellulose ‘mnicrofibrils.
The hydroxyl groups—of—the e. e ll.ulose c.hain-exhibi^t—strong…-
affinity for water molecules* The hygroscopisity of wood
— is due to–these–water loving hydroxyl groups. In the swollen
state water is adsorbed to the easily ■ accessible–hydroxyl- — –
groups of the less^ordered..amorphous–region^–With-the loss
of water, on.Jurying 3 surface tension forces pull the adjacent
cej, ] nInsebchains together causing shrinkage of the fibres
equal to the volume of water removed.
Introduction :
This paper describes the paper making properties of
various types of paper prepared from the mixture of 8(eight) minor
hardwood species, viz, Itchri (Anogeissus acuminata), Amra
(Spondias pinnata) , Barta (Artocarpus lakoocha), Champhata
(Sapium baccatum) , Gutgutia (Walsura robusta), Chakua koroi
(Albizzia chinensis) , Kuramara (Pithecolobium angulatum) r -Jagga
dumur (Ficus glomerata). These minor hardwoods are scattered all
over Chittagong and Chittagong Hill Tract areas. In an earlier
work conducted in this Institute (1) chemical and semichemical
pulping studies of these mixed species were performed and the
effects of various pulping variables on the resultant pulps were
determined.
INTRODUCTION:
The Forests of Sunderbans are constituted of a total of 3,953
square miles of which 2,316 square miles belong to East Pakistan . Out of
2,316 Square miles, the land area is J,OO6,O6O acres, of which 939,820 acres
are productive forest lands
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.