Expanding salinity threatens
Sundarban.
Decreasing flow
of water through
the rivers from upstream
is destroying the
ecosystem of Sundarban. Experts from
home and abroad
observed that alarming decrease in
water flow down
the rivers caused
high salinity in both
water and soil
of Sundarban, causing
a massive change in
fauna composition of
the forest. Sundarban, which
lies across the
outer deltas of the
Ganges, Brahmaputra and Meghna rivers, is the largest mangrove forest
in the world.
The number of
timber producing big trees such as Sundari is decreasing at the
proportionate rate at
the increase of
salinity, Abstract from a
paper on Biodiversity
and its Conservation
in Sundarban Mangrove Ecosystem by Indian scholars Brij Science journal
also revealed the same result (New Age ,
2011). The latest report
of World Conservation Monitoring warned that a
long-term ecological change is taking place in Sundarban due to the eastward
migration of the Ganges, abandonment of some distributaries and past diversion
of water and
withdrawals for irrigation (New Age, 2011).
Moving
farming complements simple financial systems as well as remote social towns.
Shifting cultivation is characterized by a rotation of fields rather than by
crops, accompanied by slashing and burning (Kerkhoff and Sharma, 2006). There
was secure situations regarding built-in terrain utilize, and also excellent
agro forestry. However, with a developing market economy and the inevitable
population pressure on land, the once elegant system of shifting cultivation
collapsed into degradation and retrogression, influenced by factors both internal and
external to the system. About 60,000 families engaged in shifting cultivation
covering an area of about 85,000 ha of the hill forests reserves. The actual
degree associated with dirt deficits because of moving farming within the hilly
places is actually proven within (Farid et al., 1992).
Location
|
Predominant
Slope
|
Soil Loss
|
Khagrachari
|
60% area under 60% slope
|
10.10 - 67.00
|
Manikchari
|
46% area under 40% slope
|
12.00 – 120.00
|
Ramgarh
|
48% area under 40% slope
|
7.00 – 27.00
|
Rangamati
|
53% area under 40% slope
|
26.00 – 68.00
|
Raikhali
|
49% area under 40% slope
|
13.00 – 27.00
|
Bandarban
|
58% area under 60% slope
|
8.00 – 107.00
|
Teknaf
|
56% area under 20% slope
|
-
|
Following 5-7 many years
associated with farming, through this process, these types of countries
completely break down for a nearly permanent condition. Rubber plantations on
more than 70% of the slopes of Sylhet and Chittagong hills leads to severe
landslides during heavy monsoon periods. Clearing of forestland for settlements
and unscientific land management for agricultural use accelerate erosion of the
topsoil through extensive surface runoff caused by heavy monsoon rain. In
addition, the infertile heavily compacted clay is exposed to the surface as a
result of topsoil removal.
Property Exchanges in order to
Additional Utilizes
Land transfers have taken place
where forested land got diverted for purposes of human settlement, development
of industry, fishery, transport and communications, irrigation, energy and
power, mining, tourism, educational institutions and defense. This scope
connected with like coach transfers seemed to be in relation to 61, 000 '.
Brick Fields
Brick fields in the vicinity of
forests have been identified as one of the notorious causes of deforestation.
Brick field owners who are the elite sand patrons within existing power
structures, have good liaison with political and government officials. These
people set up nearby musclemen that start landless, work starving individuals
to illicitly crop woodland assets. Brick fields in the vicinity of forests have
caused not only deforestation but also environmental degradation of the
biological production systems. Farmers of many areas reported that their fruit
production in the areas had declined because of smoke originating from the
brick fields. Moreover, 50% of the energy used for firing bricks comes from
woody biomass.
Inappropriate Managing
Techniques
In order to meet the increasing
demand for forest products, in the 1980, the Forest Department adopted a forest
management called clear felling followed by artificial regeneration, which
later on proved to be very detrimental to sustainable tropical rain forest
management. Following this system, the forest was cleared by slop and burning
all vegetation, and replanted with only one or two commercially important
species. As a consequence, the rich biodiversity of the tropical rain forest
ecosystem was destroyed as well as its soils exposed to erosion through
torrential rains during the monsoon season. A opening with reforested land as
well attracted lots of people so that you can encroach a plan acreage. A new
working plan format has been devised in order to incorporate available
information in the future management plans.
Latest Development inside
Supervision Procedures
Inventories were carried out of
all major forest formations in the country except the forests in Chittagong
Hill Tracts (NFA, 2007). This has provided the necessary database for using
quantitative information for preparing more comprehensive management plans for
different forests.
Total
Forest Land and Forest Area Managed by Forest Department of Bangladesh:
Category
of Forests
|
Area
|
Percentage
|
Forest Department managed
forests
|
1.53
|
10.54
|
Unclassed state forests
|
0.73
|
5.07
|
Village forests
|
0.27
|
1.88
|
Total
|
2.53
|
17.49
|
Category
of Forests
|
Area
|
Percentage
|
Hill forests
|
0.67
|
4.65
|
Natural mangrove forests
|
0.60
|
4.09
|
Mangrove plantations
|
0.14
|
0.97
|
Plain land Sal forests
|
0.12
|
0.83
|
Total
|
1.53
|
10.54
|
Government starts to operate in
the very limited size areas of forest. At the time of the government's
activities in the forests of greater demand now. A great twelve-monthly program
regarding functioning is included within the supervision program. There is huge
potential for tree planting, forest protection and agro forestry in Bangladesh
to mitigate climate change. The Church of Bangladesh Social Development Program
has been distributing over 20,000 fruit, medicinal and timber trees to poor
households per year in Meherpur District which will mitigate against global
warming by absorbing carbon dioxide, but also improve nutrition, health and
income respectively. Also timber useful
for hardwood is wonderful for the particular carbon dioxide will be kept inside
properties, and also timber gas minimizes the usage of garden greenhouse fuel
emitting fossil powers, although unwanted gas coming from timber gas are
usually reabsorbed simply by fresh baby plants selected and planted. This is
basically a detailed plan of operations within the forest division and is
prepared by the Divisional Forest Officer. In recent years, there has been a
substantial shift in emphasis in forestry and forest management from maximizing
yield towards maximizing sustainability through increased participation of local
population, conserving biodiversity and maintaining forest services
(www.bforests.gov.bd). Present management systems have evolved from the past
ones through various modifications in order to incorporate present objectives
into forest management.
Finally,
Many more adaptation techniques than those listed here need to be either transferred
from other parts of the world or developed in the country, and then trialed in
Bangladesh. There is also a need for
organisations to disseminate their ideas and experiences among likeminded NGOs
in Bangladesh. Furthermore continued research is necessary to determine more
accurately future and present effects of climate change on Bangladesh. It is
hoped that this paper will assist Bangladeshi and international organisations
to achieve some of these aims.
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