Comparative Analysis of Population Distribution Pattern in Urban System of Iran Decuple Regions

Urban system pattern of countries and Regions has a close relation with regional development and territorial equilibrium. So، for explanation of the existing situation and offering suitable polices، it is necessary to analyze the quality of urban system of regions and countries. In this regard، because there is no comparative and systematic study of regions of Iran، main question offered as: how is the situation of the ten regions of Iran according to the primacy urban criteria، urban concentration and urban equilibrium indicators. To answer this question، after reviewing theoretical bases، the evaluation variables were recognized and the research hypothesis was offered based on the distance of the urban system of more than half of the decuple regions of the country with the desired amount of urban primacy، urban concentration and urban equilibrium indicators in 2006 and 2011. Then، based on the descriptive- analytical research method the required data were gathered by library method، the data analysis was also made by the use of urban primacy index، two-city index، Ginsberg index، Mehta index، Moomaw and Alwosabi index، Moosavi index، Herfindal and Henderson indexes، entropy index، and rank- size rule. The result confirmed hypothesis، also showed that regions such as south Alborz، Khorasan and Fars have the highest urban primacy and concentration. But regions such as Saheli-e-Shomali and Zagros have the lowest urban primacy and concentration 10 2006 and 2011. According to equilibrium index، none of regions are equilibrium. Finally، revision and long-time continuation and innovative regional development policies are necessary.