Land evaluation - Environmental land suitability for urban land planning (Case Study: District 22 of Tehran)

Rapid growth of urbanization and increase of population in the recent decades along reactive planning (in sense of urban planning after occurrence of crises and urban challenges, not before occurrence of crises) of urban districts and metropolitan in order to serve desirable services to citizens and the peoples going to cities and extent them, has encountered a problem. In this research , by using the multi criteria techniques and analytic hierarchy process of geo – environmental evaluation for urban land planning with use of geographical information system of zone of 22 has been used .according to this research, effective criteria of land suitability of land planning is divided in to 9 criteria , slop, height , geology , land use , land unit , distance from river, distance from fault , distance from road .the 5 main land uses are high rise building , multistory building , low rise building natural conservation, recreate . the results show that the results show that 19.3 percent area of zone is suitable for high rise building, and 15.28 percent suitable for low rise building. the spatial distribution is of these zones is from north to south and southeast. Suitable area for natural conservation is about 17.6 percent, and 23.33 percent area appropriated for recreation. The conformity of existing building with the suitability maps for the 5 main land uses shows that there are some areas of conformity, but in the other areas, there is unconformity.