Study urban system of new provinces in Iran by spatial planning approach, case study: Qom

Balancing in territories settlements، especially in the urban systems، is important for spatial planning. According to studies carried out in a non-equilibrium state of the urban system and the primacy phenomenon is evident at national and regional levels in Iran. The purpose of this paper is to explore the urban hierarchy of Qom province، especially in the course of time. This study، is descriptive and analytical method and developmental research by purpose. Documentary methods have been used for data collection. In order to analyze the urban system has been used many indicators (primacy، two city، Mehta، Moomaw&Alwosabi، Kinsburg، scattering coefficient، Herfindahl، Shannon entropy، size- rank and improved size-rank). The results show province of Qom has 6 city that all cities don’t have record high urbanization except the city of Qom. Also، all indicators show that the city of Qom has the strongest urban prime rate، concentration and imbalance. Even become the province of Qom and the formation of new urban areas couldn''t reduce imbalances.