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
Problems of Forestry Development in East Pakistan and Planning:
FOREST DEVELOPMENT AND FOREST RESEARCH IN EAST PAKISTAN.
‘With the progressive realization of importance of
forests and forest products in the national economy, and
over-all development of the country, planning of Forest
Development and Management planning have assumed great importance. Foresters are now required to take into consideration the overall trend of development of the country and will
have, to orient the forest planning accordingly. Proper land
use, maximum products to meet the present and future -requirement of the country, maintenance of proper soil cover without disturbing the climatic and physical condition of the country,proper maintenance of the head water regions of rivers
and to maximize the agricultural production are the important considerations in the planning of Forest development .But
non-consumptive uses of forest for recreation and aesthetic
purpose and as a source of wild life and natural beauty can
not be ignored either. One of the great common denominations
that ties together all generations is man’s dependence upon
natural resources. Activities of foresters today will infuence the condition oi future generations. Proper planning of
Forest Development is , therefore, not only of vital importance for the present generation, but will guide the destiny,
of generations to come.
Most of the tropical hardwoods contain silica
e
and other minerals more or less. Sawing of these timber
species is sometimes very difficult, since the cutting edges
of the saw teeth blunts quickly. Due to this sawing difficulty some of the timber species of the forest remain unutilised and are never brought to profitable use. Sometimes the
rate of dulling of the teeth is so high that time and labour
consumed in preparation and sharpening of the blades turn
into sheet waste. So, attempts to coat the cutting edges
of the saw teeth with
Introduction
1 All the figures are for conifers and on dry wieght basis.
Major constituents of wood are cellulose, lignin and hemicelluloses. Small amounts of pectic material, starch and other extraneous substances are also present. The ash content of wood seldom
exceeds 0,5%..) (2) o Normal hardwoods and softwoods usually contain
42?2 percent of cellulose. The lignin content of hardwoods varies
from IS to 25%, while in softwoods the range is 25 to 35%. A partly
acetylated5 acidic xylan accounts for 20 to 35% of the wood of hardwoods, with a second hemicellulose, a glucomannan occuring in small
amounts. A partly acetylated galacto-gluco-mannan makes up almost
20% of coniferous wood, but the xylan, .in this case, comprises only
10% of the total wood substance(2).
S3
In a typical wood cell, the primary wall forms an envelope
for the secondary wall, which in turn, encloses the lumen. The primary wall, as well as the intercellular substance, are highly lignified (71 per cent lignin and 14 per cent pentosan in Douglas Fir) ,
whereas the secondary wall is largely cellulose ( over 50% in 8^
and slightly less in layer) , though lignified ( 13 to 25% in
$2 and 11 to 13/j in layer). The hemicellulose content is about
20% in the primary wall, 25 to 30% in the So, and 30 to 35% in the
layer ( 37)—. Regions of. approximately parallel change alternate
with less ordered regions in the secondary wall cellulose. The
molecules in the crystalline regions and to a certain extent, in
the amorphous regions, are held primarily together by a large
number of hydrogen bonds while Van der Waal’s forces probably make
some contribution to the cohesion.
Abstruct will be there
summary of data for the month of April to June,1971:
station: Forest Research Institute, Chittagong.
Time of observation : 0800 hours.
.
In Dacca district, the sal forests are limited within
the Dacca sadar North Sub-Division and in the district of
acres in Rajshahi district.
r . *
Sal is found only in the plains of
Dinajpur district,
Division and small patches in Thakurgaon Sub-Division. In
Rangpur district it is-limited within the Sadar Sub-Division.
In Rajshahi district it is limited within the northern portion
Mymensingh these are. limited within the Mymensingh Sadar and
Tangail Sub-Division and in the foot hills of Garo hills. In
these are limited within the Sadar Subof Noagaon Sub-Division. … . –
In area, Sal occupies approximately 64000 acres in Dacca
district, 1,78,890 acres in Mymensingh district, 16,344 acres
in Dinajpur district, 3410 acres in Rangpur district and 1057
Dacca,
I
THE PRESENT WORKING PLAN?
The amount of work laid down in the preparation and presentation
of periodic working plans for the forest divisions is impreSsive.Compared
with similar plans in most other countries the East Pakistan working plans
are undoubtedly of a very high standard. They contain a wealth of
forests
not easily found elsewhere.
Working plans in their present form date back to mid 19th or
eVen late 18th century German forestry. The ideas and concepts of Central
methods and techniques developed have served the forestry of several
countries for better or worse for generations. But with the changing
position of forests in national economics, in land use policy and as
producers of raw material for industry,. a more dynamic approach also to
planning in forestry is under way.
This raises the question of working plans in the future East
Pakistan forestry business. In this paper it is attempted to examine how
the working plans of to-day are related to the forestry of to-morrow, and
some tentative lines of development are suggested
Introduction
Most of the tropical hardwoods contain silicae
and other minerals more or less. Sawing of these timber
species is sometimes very difficult, since the cutting edges
of the saw teeth blunts quickly. Due to this sawing difficulty some of the timber species of the forest remain unutilised and are never brought to profitable use. Sometimes the
rate of dulling of the teeth is so high that time and labour
consumed in preparation and sharpening of the blades turn
into sheet waste. So, attempts to coat the cutting edges
of the saw teeth with some wear-resistance metal is justified*
Golpata is a gregarious palm with a large number
of 15 to 30 ft. long pinnate leaves arising in tufts from a
stout creeping rhizome. The species is available in abundant
quantities in the tidal estuaries and canal banks in the Sundarbans and on the coasts of Chittagong.
The development program of the Forest Research
Institute aims, among other things, to establish an organization for research in the field of forest management, a
the task which has up to the present day been performed by the
office of the Silviculturalist in the Development Circle.
A United Nations Special Fund Project has been initiated by
the Pakistan Government as an integrated part of the development scheme.
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.
