Journal of Sustainable Urban & Regional Development Studies (JSURDS)

Abstract Urban sustainability is a concept that seeks sustainable development in the world as a model of a new word was introduced the roots of dissatisfaction with the attitude of sustainable development with resource development and physical growth, economic and social returns in the cities of Landscape ecology the population increase in recent years cities have faced physical expansion so the world in which we live is constantly changing, so having a system to coordinate planning between the housing and construction sector with other sectors and between the components that create the (land transport systems, etc.) with infrastructure, public facilities, social services, etc. is an absolute necessity the study aims to identify and evaluate the sustainability of the city housing index in Ahvaz Metropolis is studied the study has a 'development - functional "and a combination of research methods" descriptive, analytical, field and library “ It should be noted in this study, the spatial approach in the form of TOPSIS model using 24 variables in the index composition is used.Finally, to analyze the results of software ArcGIS, VISIO, GRAFER, EXCEL and other programs is required based on the results for the one-dimensional variables and physical development status of Ahvaz during the studied period, showing the vast differences in the eight urban area.
Finally, based on TOPSIS statistics statistical average of 0.379 percent region with TOPSIS 0.583 percent to 0.184 percent, the highest and the lowest was fifth district.It is based on the results zones two, three, four and a TOPSIS amount higher than average Therefore, attention and planning in housing indicator system, in the eight urban districts of Ahvaz is necessary

Abstract Background and Objective: The increasing growth of urban environments has brought environmental problems to cities in the 21st century. These problems have led to the instability of urban environments. Various approaches have been proposed to achieve urban balance and sustainability, one of which is ecological city. The aim of this research is to investigate the role of physical development and urban density in achieving ecological development in the city of Dorche.
Methodology: The research method in the present study is quantitative in terms of paradigm, applied in terms of purpose, and descriptive-analytical in nature. The method of data collection was library and survey; Shannon and Holdern entropy model was used to evaluate urban sprawl, and GIS and SPSS software were used to analyze the data.
Results and findings: The results of the research through the Shannon entropy model show that the value of H between 1390 and 1400 is 1.5165 and 1.4084 respectively and the value of Ln (7) is 1.9459 and the entropy coefficient has decreased between 1390 and 1400; the results of the Holdern model show that between 1335 and 1400, about 92 percent of the city's physical growth was related to population growth and 8 percent was related to the city's horizontal and spiral growth; therefore, the conditions for the formation of mixed and intensive use in terms of ecological structure are available in this city. Also, according to the studies conducted from 1390 to today (1404), urban growth has been controlled and the area of ​​the city's boundary has decreased by 36 hectares compared to the area approved in previous plans, and the horizontal and irregular expansion of the city has been prevented; In fact, this change has caused the city to move towards a compact city. This type of growth is in line with its ecological potential and can contribute to the ecological development and sustainability of the city economically, physically, and socially.

Abstract Urbanism, urban growth and its undesirable expansion as global phenomena, affect all countries throughout the world. In recent decades, the growth and extension of urban areas has come to be considered as a kind of issue or problem and Ahvaz appears to possess such problem. The aim of this study is practical and its methodology is descriptive-analytical. the present study seeks to investigate the physical development of Ahvaz Extension pattern of Ahvaz in the 2021 horizons. First the process of physical extension is investigated during the period from 1981-2017 (35 years) and 14 indicators has been extracted for the study of the appropriate extension of Ahvaz development in 2021 horizon. By using of FUZZY logic, these indicators have turned out to be standard and by the use of analytical-combinatory model of ANPDEMATEL for the optimized model, 3 levels have been determined for the extension of this city, which has been consequently extracted in the combination of OVERLAYFUZZY and 0/9 GAMA in the GIS environment of output maps also using ENVI and arc GIS software. The results showed that at the level of predictive models of agricultural land with weights of 0.101 and 0.118, the most important and important factor has been the physical development of the city of Ahvaz. Also, the output of physical expansion on the horizon of 1400 showed that the best location in the immediate area of the 8th district of the city and not being located on the site of agricultural land in this city.