Impact Assessment of Climate Change and Sea Level Rise on ...

6.3 <strong>Impact</strong> <strong>of</strong> <strong>Climate</strong> change on L<strong>and</strong> Type
<strong>Assessment</strong> <strong>of</strong> impact on l<strong>and</strong> type will determine the change on agricultural yield since it is
associated with cropping pattern. The decrease <strong>of</strong> F0 <strong>and</strong> F1 l<strong>and</strong> will decrease the cultivable
l<strong>and</strong> for transplanted aman crop similarly increase <strong>of</strong> these l<strong>and</strong> type will increase the
opportunity to cultivate T.aman in more l<strong>and</strong>. L<strong>and</strong> type has been assessed for each upazila
for the seven districts due to climate change using the model results that have been generated
increasing the precipitation over the entire catchment on average <strong>and</strong> moderate flood events.
The impacts on each type <strong>of</strong> l<strong>and</strong> for every district have been calculated as shown in Table
6.4 <strong>and</strong> is shown in Figure 6.1 to 6.12. Generally F0 <strong>and</strong> F1 l<strong>and</strong> has decreased in every
district except Faridpur, district which implies that l<strong>and</strong> suitability for T aman in Khrif-II
season, would decrease over the country due to climate change. In contrast, F3 <strong>and</strong> F4 l<strong>and</strong>
has increased considerably in all districts. In Sirajganj district, the decrease <strong>of</strong> F0 <strong>and</strong> F1 is
44% <strong>and</strong> 42% respectively. The decrease <strong>of</strong> F0 <strong>and</strong> F1 l<strong>and</strong> is also quite large in the Barisal
district which is 43 % <strong>and</strong> 32 %, on the other h<strong>and</strong> the percent increase <strong>of</strong> F3 <strong>and</strong> F4 l<strong>and</strong> are
quite high, which implies deep inundated area would increase.
Table 6.4: <strong>Impact</strong> on l<strong>and</strong> type
Districts
Area
L<strong>and</strong> Type (km 2 )
(km 2 ) F0 F1 F2 F3 F4
Inundation at 2005 32.04 156.60 289.80 186.57 10.35
Faridpur 2072.72
Sirajganj 2497.92
Sunamganj 3669.58
Satkhira 3858.33
Barisal 2790.51
Gaib<strong>and</strong>ha 2179.27
Pabna 2371.50
Inundation at 2040 33.66 163.71 308.79 240.66 10.35
% increase 5.06 4.54 6.55 28.99 0.00
Inundation at 2005 58.23 401.49 699.21 423.90 12.24
Inundation at 2040 32.13 230.76 694.31 748.71 35.37
% increase -44.82 -42.52 -0.70 76.62 300 percent
Inundation at 2005 882.17 371.43 699.48 1178.10 472.95
Inundation at 2040 65.16 324.54 672.30 1268.46 575.71
% increase -20.70 -12.62 -3.89 7.67 21.73
Inundation at 2005 35.91 121.50 392.31 1844.37 0.09
Inundation at 2040 27.72 127.70 216.00 2063.97 0.81
% increase -22.81 5.93 -44.94 11.91 Significant
Inundation at 2005 117.63 975.33 749.43 78.12 0.00
Inundation at 2040 66.24 658.80 1161.81 126.18 0.00
% increase -43.69 -32.45 55.03 61.52 0.00
Inundation at 2005 74.43 414.81 479.79 104.04 0.36
Inundation at 2040 73.44 333.27 570.87 224.73 0.90
% increase -1.33 -19.66 18.94 Significant Significant
Inundation at 2005 61.56 219.96 487.08 553.68 126.18
Inundation at 2040 55.35 198.90 410.94 721.98 281.52
% increase -10.09 -9.57 -15.63 30.40 Double
40