XIX-B8, 2012
izing on-screen the
t Scenes.
age classification
—ÓM——M MÀ
1
eee]
tural mangrove
al plantation.
ther vegetation
stead forest
stal mangrove
class. Most of |
sonal cropland.
dy soil in the
type of water-
river, shrimp
es, agricultural
ION
of Sundarbans are
ingrove forest loss
cades (1973-2010).
zone of mangrove
hat the mangrove
ring the period of
se of erosion was
io mangrove forest
oss of forest due to
ggradations. Land
ed in some places.
ted only in some
transect lines of
sure 2 and 3) for
lesh Sundarbans.
during the field-
eure 4. The nature
for forest loss are
ent points of the
. The erosion rates
| conclusive result
> erosion has been
-made or climate
on for the eastern
/year respectively
s. Further studies
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
Table 3. Land cover change matrix in Sundarbans forest regions (1973-2010, Bangladesh part), area in sq. km
2010 Total
Mangrove | Other Bare Water | 1973
vegetation | land
1973 | Mangrove 3 920 1 233 4 178
Other - 242 385 278 905
vegetation
Bare land 10 70 597 307 993
Water 104 14 4 538 4 710
Total 2010 4 034 336 1 060 5356 10 786
Table 4. Time-series analysis of mean erosion rate (m/year) at different point
Position Point 1972- 198
number 1980
East 20 9
0- 1989-
1989 2000
17
27 -3 11
37 6
12
24 11 9
18 11
Minus sign represents accretion
22
17
11
53
28
2000-
2010
20
12
14
19
12
Direction
West
West
East
North-west
East,
South-east
South-west
North-west
South-west
North-west
East
22^20'00"
22?10'00"N
22^00'00"N
21*50'00"N
21740'00"N
089*10'00"E 089?20'00"E
Stable Forest
Forest —» Water
Water —» Forest 9:
089° 10°00°E 089^20'00"F 089°30°00"E 089^40'00"E
089° 30°00°E 089^40'00"E
Legend
089^50'00"E
089^50'00"E
Stable Other Vegetation si i
Unchanged water
Other Changes
FTL 22°3000°N
22°10'00"N
Figure 1. Shoreline changes in the Sundarbans mangrove forest (Bangladesh part, 1973-2010)
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