Change of Economic Structures and New Foundations of Urban and Regional Spatial Planning, Case study: Tabriz Metropolis

Emergence and appearance of changes in the role، physical structure and spatial organization of cities is not a haphazard event. But this occurs during a long developmental process and under the influence of economical developments resulting from modifications in nature، technology and production relations، social developments and philosophical progressions. The method used in this paper for data analysis is in the form of secondary analysis. Diagrams were used for elucidation of the issues and processes. In this paper basic principles have been outlined for urban and regional spatial planning benefitting from the scholars'' thoughts and viewpoints in this area including Daniel Bell، Fritz Machlup، Alvin Toffler، Frank Webster Yoneji Masuda، Simon Nora، Allen Mank Uri and Manuel Castells who hold views germane to information society. Also the spatial organizing of Tabriz and its urban region has been defined with the dominancy of the new pattern. Besides، Its primary findings embrace uncomplicated and shortened space due to reduction of the system''s parts، replacement of parts fusion with their severance، replacement of decentralization from time and place with centralization، converting parts assortment from vertical structure to horizontal، replacement of space dissociation with space integration، replacement of quantitative criteria with qualitative measures in organizing process and conversion of size and scale of system parts from large to small.