Perera et al. (1993) reported that GIS-based research
was carried out to develop new land for rice cultivation in
southern Sri Lanka, with special concern for environmental
conservation. The locations of the land considered for
paddy cultivation were analyzed and merged with the
GIS database, with a specially arranged points system.
According to their study, more than 72% of the selected
land was classified as highly suitable or suitable for rice
cultivation. In addition, Mongkolsawat et al. (2002) used
GIS to develop a spatial model for land evaluation for
rice cultivation in the lower Namphong watershed in
northeastern Thailand. They determined that the highly
suitable land covered an area of about 208.3 km2 and that
some 17.7% of the watershed is unsuitable for rice, which
corresponds to the sloping land. Suitability classes were
checked against the rice yields collated by the Department
of Agriculture Extension Service in Ankara, Turkey, and it
was determined that they were satisfactory.
The main objectives of the current study were to
identify the most suitable areas for rice cultivation on
various alluvial soils in the Çankırı-Kızılırmak district
in the Central Anatolian region of Turkey. That was done