Investigating the modification of Jansen's industrial zone in Ankara, Türkiye, through fringe-belt analyses

The manufacturing and infrastructural areas that emerged during the industrial period and became part of the urban landscape have directly influenced planning criteria regarding their location, magnitude, and relations with transportation. Due to their adverse effects on the city, such as pollution and noise, these areas, which were generally planned on the urban fringe, were sometimes surrounded by green spaces in order to isolate them physically. Because of changing social conditions and urban developments, many industrial areas are now emerging as problem areas in the urban landscape. They cannot retain their original function but have remained part of the city and turned into abandoned areas or urban voids. In light of these, this paper focuses on the former industrial zone of Ankara, which Herman Jansen (1932) planned in line with the Garden City principles. The industrial zone was located along the railway line and in the western part of the city, where it was thought that it would not negatively affect the city, and it was isolated by green spaces. This paper utilises the fringe-belt theory to show the evolution and modification of the industrial zone by using aerial photos,
orthophotos, and maps at ten-year intervals. So, it investigates the changes in the identity of this zone. This paper briefly tries to reveal the approaches to the abandoned industrial sites and green spaces surrounding them. In addition, this paper will contribute to the limited studies on fringe-belt analysis in Turkish cities.