Image Processing Reference
In-Depth Information
1500
Settlement
1000
Field
500
Lake + Sea
0
Forest
−
500
Stone Quarry
−
1000
Industrial area
−
1500
District
Fig. 15.6
Land use changes in Büyükçekmece and its sub-districts between 1984 and 1998
the construction of a dike to provide water for Istanbul in 1985. In addition to
Ahmediye, the newly created lake also inundated parts of Tepecik, Karaağaç and
Büyükçekmece. Overall, approximately 1,000 ha area was flooded: 619.2 ha
(64.9%) in Ahmediye, 197.4 ha (14.3%) in Tepecik, and 119.3 ha (5.5%) in
Büyükçekmece. Since the other parts of the study area are not adjacent to the lake,
other changes of less than 1% correspond to slight sea level changes of the Marmara
Sea. Only one 1% change in the Mimarsinan corresponds to a joint change caused
by the lake creation plus sea level rises.
After 1990, industry in Büyükçekmece had started to grow. In 1998, in Kıraç,
Kavaklı and Mimarsinan, 3-5% of industrialized areas were seen, which meant a
total of 103.8 ha. This brought the total area of land used for industry in
Büyükçekmece to 344 ha. The main reasons of the growth of the industrialized
areas here are the planned structure of the region and the very convenient air, high-
way (Trans European Motorway (TEM)), and sea connection possibilities. Other
land use is accounted for by stone quarries and open pits, which cover 298 ha of the
study area.
Results of the change detection analysis obtained using image clearly showed
that over the period 1984-1998, there has been a great increase in settlements
mainly at the eastern part of the Büyükçekmece Lake, that is in Esenyurt, Kavaklı,
Yakuplu and Kıraç and at the southwestern part of the lake in Mimarsinan (in yellow).
Areal values of the changed areas (settlement plus industry) for the period 1984-
1998 were calculated as 4,790 ha based on the classified image obtained using the
change detection method (Table
15.6
).
