Geomorphological Assessment of Land Suitability for the Physical Expansion of Sanandaj City Applying Restricted Areas

The Third World cities have, in recent years, faced with numerous problems, including population growth, uncontrolled migration and consequently increasing disproportionate construction with environmental capabilities city. This uneven development has multiplied the vulnerability of cities to the risks involved. The fact is that the physical structure and spatial development of cities are very complicated. This problem prevents many attempts to analyze and communicate useful and effective policies and approved plans of the city. Therefore, the natural structure, on the one hand, could have the breadth of vision and knowledge of the environment and, on the other hand, provides a measured and considered the possibility of any movement in the environment by humans in the form of a tiered system. Establishment and creation of a city, more than anything else, depends on the conditions of its geographical location, because the effects of natural phenomena have a decisive effect in locating, sphere of influence, urban morphological and physical development. Natural phenomena act as agent sometimes positive and sometimes negative factors and inhibitors. Therefore, any extension of natural areas should be done with appropriate programs and management plans and zoning so that, along with the people of the region, preserve its natural values and, thereby achieve continuous operation of the area. To achieve this objective, urban land-use planning is considered which is the main aspects of construction following turmoil and problems of cities.