Assessing Increase the urban density capacity of urmia city by analyzing the spatial distribution of city densities Using MADM Techniques

Density as one of the dimensions of city construction is an important factor in understanding how the city works and changes. in the case of the study.the city of urmia has been developing a large horizontal expansion in the recent decades.The purpose of this research is to evaluate the process of change in the types of densities in Urmia city and level of implementation of detailed plan in the field of building density. in this regard , at first , the status of different urban densities in different periods and the degree of fulfillment of a detailed plan was analyzed and Then, with the introduction of effective indicators on determination of real building density, city land capacity was determined and modeled with the Multi-Criteria Evaluation and in GIS software . the density indicators in the city are distributed as unbalanced in the urban regions And 78% of the building densities predicted by the detailed plan were not realized . the result of modeling the capacity of building density Suggests unused to 68 % of the city's land capacity and The distance is far to favorable conditions, especially in regions 2,3 and 5of the city. Comparison of the results of the research model with the existing condition of building density in Urmia Suggests The movement of the density profile From higher than the density in the central and middle regions of the city towards the medium and lower density in the city's margins and Creates a pyramid mode in the city.