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REMOTE SENSING AND GIS INTEGRATION FOR LAND COVER ANALYSIS,
A CASE STUDY: GOKCEADA ISLAND
F. Bektas *, C. Goksel *
* ITU, Civil Engineering Faculty, 34469 Maslak Istanbul, Turkey Istanbul
bektasfi@itu.edu.tr, goksel@itu.edu.tr
Commission IV, WG IV/7
KEY WORDS : Remote Sensing, Land Cover, GIS, Integration, Landsat
ABSTRACT:
In this study, remote sensing and geographic information system (GIS) integration were used in order to analyse land cover of
Gókceada Island by using Landsat 7 ETM data with slope and aspect data. Digital image processing techniques were conducted for
the processes of image enhancement, manipulation, registration and classification for land cover analysis. Digital Elevation Model
of the island were performed by digitising 1/25000 scaled standart topographic map. Slope and aspect map were derived by using
the DEM as layers in GIS. Previously derived slope and aspect maps were overlain on the classified image to delineate problamatic
areas of island for urbanisation. Gokceada Island has been developing rapidly over the last decade, successful planning will require
reliable information about land use/cover distribution. This study illustrates that integration of remotely sensed data and GIS
techniques are effective in order to provide such information.
1. INTRODUCTION
Land cover is a fundamental parameter describing the Earth's
surface. This parameter is a considerable variable that impacts
on and links many parts of the human and physical
environments (Foody, 2002). Remote sensing technique has
ability to represent of land cover categories by means of
classification process. With the availability of multispectral
remotely sensed data in digital form and the developments in
digital processing, remote sensing supplies a new prospective
for land-cover/land-use analysis. Geographical Information
Systems have already been used for assessing environmental
problems, since they provides a flexible environment and a
powerful tool for the manipulation and analysis of spatial
information for land cover feature identification and the maps
of all variables were combined to extract information to beter
understand analysing (Weng, 2001). Satellite remote sensing, in
conjuction with geographic information systems, has been
widely applied and been recognized as a powerful and effective
tool in analysing land cover/use categories (Ehlers et al., 1990;
Treitz et al., 1992; Harris and Ventura, 1995; Weng, 2001).
This study made use of remotely sensed data and GIS
technologies; to evaluate qualitatively and quantitatively
outcome of Gokceada Island land cover/use distribution.
Obtained results were compared with each other, visualized and
analyzed, in Geographic Information System.
2. STUDY AREA
The selected area of study was Gókceada Island of Turkey as
shown in figure 1. Gókceada island located between latitudes
40^ 05 12" N and 40° 14 18^ N and longtitude 25" 40 06^ E
and 26° 01° 05” E, is the most largest island of Turkey and
comprises 289.5 km? and has a population of 8875. The terrain
711
of the island is mostly hilly and the climate of it basically
Mediterreanne and it is the 4th island of the world from the
point of plenty of fresh water sources in the world. The
economy of the island is based mainly on tourism. Gokceada
Island is being developed. year after year, extending their
infrastructure in order to cope to increasing number of tourist
arrivals. Economic prosperity in the island has generated a
significant demand for all forms of recreational activities.
Figurel. Location of the study arca
