The sociological analysis of unsustanability of urban development in informal settlements of metropolis (case study of Tabriz)

In developing countries, urban areas grow mainly by migration of rural population, and it results in unplanned and informal growth spesially in metropolises. The unbalanced growth cause to unsustanability and appear in social and spatial discrimination, poverty, settelment in high risk areas and the other same consequences. Tabriz, one of the Irans metropolises, had been proposed as the destination of emigration in north-west region befor the beginning of the development planning. The migrated population pushed and setteled on suburbs and unsustainable grounds with high steeps, because they had been unable for the charge of land price and not match in terms of social-economical aspects. House construction with poor materials and unstable structures, poverty and livelihood dependent on unstable jobs, existing of the high natural risk like earthquake and landslide, high growth rate of the population, inappropriate network in informal settelments and so on would be inevitable as long as the emigration contries. This issue brings up necessity of paying attention to sustability indexes in planning of informal settelments.