An Impact of Growth Control and Containment Policies on The Trend of Peri-urban Settlements Evolutions in Tehran Metropolitan Fringe

The transition process from rural to urban areas in the fringe of Tehran metropolis، or in other words peri-urbanization has had a rapid growth in recent decades. One of the forces contributing to such evolutions is the growth control and containment policies assigned to the city which consist of large scale measures such as green-belt or urban growth boundary (UGB) definitions along with small scale measures such as urban development regulations and land-use zoning in comprehensive plans. Outward spillover from population centers with firm growth control policies to spaces without such policies has resulted in sporadic peri-urbanization and emergence of mushroom peri-urban settlements in Tehran metropolitan region، specially in its southern areas. This research aims to analyze the transition of development spillover resulted from growth control to peri-urbanization in the metropolitan fringe of Tehran which takes place in case such political fragmentation through the local governance territories in the region. This analysis is based on the demographic changes in settlements in Tehan’s metropolitan fringe in 1996 to 2006.