抄録
There is strong trend for suburban clustered employment growth in many large cities. However, such a polycentric employment growth is quite complicated and subject to many factors. Empirical research mostly focuses American cities. Therefore it is necessary to analyze different cities with different specific characteristics to provide a better explanation of polycentrism. This paper analyzes the metropolis of Turkey, Istanbul, by using available data between 1985 and 1997. Employment centers are defined and a methodology explained to classify clusters of employment centers using rank-size distributions. The dynamics of each center are examined. The impacts of multi-centers on commuting patterns and the spatial extent of labor sheds are also discussed for each type of sub-center. The location policies of the Istanbul Metropolitan Area Sub-Region Master Plan are described and the stated outcomes of the plan for 2010 are assessed based on evidence from historical changes in employment location.
