spatial development pattern

Today, due to population growth and physical-structural development of cities, the structure and spatial form of urban development is of great importance and the compact city serves as a model for urban management and development of tomorrow's cities and smart growth. One of the factors of urban sustainability is the relationship between the shape and physical form of the city (spatial-physical structure). This article examines the situation and major indicators of sustainable city form and its dialectical relationship with other factors, and sheds some light on pros and cons of  urban sprawl of Lamerd city (including its morphology, i.e. structure, form and spatial development of the city). This study, employing library study method of research, adopts descriptive-analytical and comparative approach to data collection. The data of the urban sprawl indicators are collected through cognitive, functional information and studying comprehensive and detailed plans of the city.. By reviewing the literature and using the necessary and effective parameters obtained through analyzing the urban density of Lamerd city, an attempt is made to explain the reasons behind the sprawl and extensive urban development of the city. In the end,  the theories related to sustainable urban forms and morphology, their convergences and divergences, and finally the functional aspects and the implications of the theories in question for the city status are touched upon, concluding by making some suggestions. According to the studies and analyses conducted in 1345-85, the surface area and population of Lamerd city has increased about six and five times, respectively. During these years, the gross population density of the city has decreased from 131.3 people to 30.1 people per hectare. The lack of a sharp decrease in gross population density in different years indicates the excessive expansion of the city and the vacancy of many spaces and inactive urban areas and finally the horizontal, expanded, sprawl  development of neighborhoods in Lamerd, bringing about urban unsustainability in optimal distribution of services and access to facilities for the city residents, and in a rise in infrastructural costs and energy waste. The net residential density in 1985 is 85.85 people per hectare and in 1995 the net residential density and population density are  73  and 29 people per hectare, respectively.

Sprawl is the result of rapid population growth and sprawling expansion in the periphery of the city and has a direct impact on the spatial development of cities, which has become a major challenge in the world in recent years. In the same vein, this research aims to explain the dispersed urban space and its environmental impacts in Qaemshahr

The present study aims to describe descriptive-analytic methods to explain the spatial effects of Ghaemshahr on urban areas using Landsat multistory satellite imagery. The required information was collected through library and field studies from the scope of the study. Land use was adapted from the fuzzy supervised classification based on the severity of the stress, and the geographic information system and model Holdren were used to measure the scattered forms.

The results of the model Holdren indicate that the agent has the greatest impact in 22 years, the sprawl of the city with different patterns and, as a result of the growth of orchard land use by 43 percent is most predictions made based on cells automatically land area made It will reach 8833 hectares by 1402. The results of the GIS shows that sprawl space in this period forms such as linear growth pattern, individual pattern, the pattern of growth, expansion, intensification cluster pattern that adverse environmental consequences associated with.

Therefore, what emerges from this study is the development of spatial urban sprawl, which has devastating effects on the environment and land-friendly agricultural lands of the perimeter of the periphery and the form of space in the city. In order to achieve a sustainable urban form, the compact city growth model is proposed as the future development of Qaemshahr.