Review of operational and body changes procedure of the old texture of Tehran city: An Emphasis on Are 4 ،Region 11

Region 11 of Theran city, as one of the twenty two regions of Tehran city, with the area about 1200 ha and the population about 245000 person, is one of the important central regions of tehran the great city. The current area of this region has been located on proximity of the historical core of tehran and some of its parts (the east ern parts) is a section of this core. As this regard, the region has many elements, residental structures and general spaces in regard of historical antiquity, with special agricultural and historical values which it is important opter the region 12. The present study has been focused on one of the four- areas (area 4) from the region 11 ،and it has been reviewed the operational and body changes procedure of the region and the mentioned area partiaulrely. The special characteristics of this area are the various usages and activities, that include much important politics governmental centers, particular markets with overregiona and over-city operations ،the big industrial units, special usoges and special hospitals. As well, it has been reviewed the role and eftects of the public investments and politics onto the operationa and body changes of the area. The reviews and studies have been indicated that it has been provided the community changes theme as a result of the emigration from the 1340’s, and it has been obliterated the body textures by the land cost reduction; but in recent decades, the region 11 has found the new roles a along with the national planning, with the country inbestments in the great tehran ،and the basic operational and body changes have been created in the are 4, along with the national and regional activities. The research, as well as review of above changes, have provided som methods in the light of reduction of the regional and areal problems.