The temporal- spatial measurement of Urmia city s space form with emphasis on urban Density indices

Density is one of the important issues in urban studies, and one of the most important city formation, and its monitoring is also important in the city developments analysis. this research purpose is descriptive – analytical, and is about changes and the spatial-temporal distribution evaluation of urban Density indices in urmia city(Area,population,Gross Residential and Net Residential Densiy, Building Densit, per capita , floor Area ), using data and statistical methods such as Moran , Gray ,Shannon Entropy and relative and Williamson coefficients and with Median ,Std. Deviation, Range ,Skewness, Kurtosis during 1996- 2016 .The results show that In the past 20 years in Urima city, values of all indices had increasing, and moving towards the limited compression by using the significant models, but inequality and lack of equivalence in most indicators distribution, and their distribution in city, and this is increasing inequality polar distribution explanation in the city. Consequently, Zones 1 and 2 are the most populated regions in the city, and the first one from the point of building density and infrastructure overhead, and the second from the point of net population density amongst the city's regions, the most inequality is the zone 5 because it was more unbalanced and has the most inequality in distribution.