In 1950-1952, 1972, 1978 and 1989-1990, intensive immigration into Turkey took place from the Balkans and
particularly Bulgaria. Most of these immigrants settled in Bursa.
As a result, the pressing economic, social and cultural needs, particularly the need for shelter, of this
immigrant population emerged, with local municipalities incapable of applying the zoning plans they had
previously prepared. This gave rise to an unplanned and rapid ‘urbanization’ process in I and II class agricultural
areas, resulting in many harmful changes to agricultural zones in terms of land use.