International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004
Table 10. Statistics of the classes in suitability map for Khulna/Sathkhira study area.
Suitability Weightage Number of | Area Percentage of total
Classes (%) polygons (hectares) suitable area
] 77.78 77 2356.22 1.82
2 74.07 859 33276.27 25.70
3 70.37 1890 53392.59 41.24
4 67.9 1385 29815.41 23.03
5 65.43 416 6707.16 5.18
6 62.96 96 1031.64 0.79
7 60.49 118 1088.99 0.84
8 58.02 110 1380.38 1.06
9 54.32 23 403.56 0.31
Total 4974 129452.22
In this study area, the lower suitability classes (fifth-ninth)
have very lower percentage of areas than the higher suitability
classes (second-forth) except the first one. Thus, it is evident
from the percentage weightages of the classes with higher
percentage of area (second-fourth) that the land parcels in this
study area are highly suitable with in the attained suitability
classes.
Table 11. Area and percentage of suitability classes in different land use
Classes of the Khulna-Sathkhira area.
Suitability Shrimp bed Agriculture land
Classes Area Yo Area Yo
| 2205.78 93.62 150.44 6.38
2 26593.29 79.92 6682.97 20.08
3 35747.35 66.95 17645.23 33.05
4 7070.62 23.7] 22744.78 76.29
5 318.68 4.75 6388.48 95.25
6 187.07 18.13 844.57 81.87
7 217.90 20.01 871.09 79.99
8 45.83 332 1334.54 96.68
9 - - 403.56 100.00
Total 72386.54 55.92 57065.68 44.08
Note: - Areas are in hectares.
- Percentages (except total) are based on total suitable
areas under each suitability class.
- Percentages in total are based on total suitable area
under all suitability classes.
In table 11, existing shrimp beds are seen to be placed to the
higher suitability classes (first-third) with considerable higher
percentage than they are placed to the lower suitability classes
(fourth-ninth). This, like Cox's Bazar study area, indicates the
validity of the model in selecting suitable shrimp farming
sites. For agriculture land, the situation is reverse then the
shrimp bed: they are placed to the lower suitable classes
(fourth-ninth) with comparatively higher percentage.
Total area of the two land use classes under model application
is 1, 34,179 hectares (table 6). About 96.47% of this area (1,
29.452 hectares, table 10) is placed to suitable classes. Total
232
area of the agricultural land is about 59,065 hectares; 96.6%
of this area (57,065 hectares, table 4) is placed to suitable
classes. This indicates the existence of high potential of the
extension of shrimp farming in this study area.
6.3 Comparison of the two study areas in respect of
suitability of shrimp farming
Comparing tables 8 and 10, it is seen that wide variation of
suitability exists in both the Khulna-Sathkhira (77.8% -
54.3%) and Cox's Bazar (67.9% - 45.1%) study areas.
Considering the percentage of weightage, Khulna-Sathkhira
area is more suitable for shrimp farming than Cox's Bazar
area. With in the attained suitability classes, majorities of the
Khulna-Sathkhira areas are placed to the highly suitable
categories (table 10), where as, Cox's Bazar areas are placed
to the moderately suitable categories (table 8).
Internati
ue nte
Total sui
study ar
respective
well as, «
suitability
areas, hig
Consideri
Cox's Ba
Sathkhira
7. CONC
Coastal a
domestic
exchange
coastal aq
job oppor
system an
but it has
malnouris
142 mill
regions cc
water reg
farming. '
created a
necessary
developm
motivatiot
coastal aq
land scar
model wi
Different
suitable si
DFO Cox
Coxs Bi
Banglades
DFO, Sat
Sathkhira
DFO, Khu
Khulna d
Paikgacha
district.
Gupta M
Developmi
Selection i
Gupta M.(
Brackish
ARC/INFC
Kapetsky
1987.AGec
opportuniti
UNEP/GR
Krishnamu
and S.R.}
Brackishw:
data. À ca
Remote Se
