Analysis and study city hierarchy system of Golestan province with the emphasis on political - administrative changes

One of the most important hardships of world’s countries including Iran is the centralization of overpopulation and facilities in big cities and creation of Urban Primacy phenomenon and destroying of city balanced hierarchy system that this phenomenon is due to lack of balance in distributing of different facilities in abroad country and also ignoring potentials of small and mid-cities. In present article we studied city hierarchy system and effect of Golestan province generating in 1998 upon this system. The research method is descriptive-analytical and quantity and Urban Primacy Index focus index and balance index is used. Conclusions referred that city system of Golestan has passed two different processes, from 1977 to 1997 and 1997 to 2007. In which from the year 1977 to 1997 it has some frequent changes or had an unchangeable process, but from the year 1997 to 2007 had inclination toward prior city and incongruity, and also generating the Golestan province in 1998, which plays an important role in it, was known as the new political division in increasing incongruity of city system.