نشریه مطالعات ساختار و کارکرد شهری
پیاپی 33 (زمستان 1401)

One of the dynamics of cities is the residential mobility of families within the city. These movements, which occur for a variety of reasons, sometimes cause problems in the destination or origin neighborhood. The purpose of this study is to find the reasons for the relocation of residents from the center of Tehran, from the perspective of the residents in those areas and provide a solution to prevent them from leaving. This research is a survey and uses field study. The statistical population includes the residents of the neighborhoods around Tehran Bazaar selected through multi-stage clustering method. The statistical tool used in this research is factor R analysis and the required data has been collected through library studies and interviews with experts. After analyzing the questions, 5 questions were removed and finally the modified questionnaire was distributed among 203 residents. After rotating the data with the help of factor R analysis tool, 12 factors were identified. After removing the factors with less than three questions, 7 factors were finally identified. The results showed that "insecurity and social problems", "formation of the pyramid of urban spatial status", "physical problems and texture wear and tear", and "lack of tissue responsiveness to new needs" were the most important factors affecting the mobility of families and "creating a new mental image of texture in the citizens’ minds".

Urbanization, as a dynamic process of changing the relationship between man and the earth, is an important social and economic phenomenon around the world. Although urban expansion is largely due to economic and demographic reasons, it has socio-spatial and economic-political consequences and affects the natural and biological factors as well. Mazandaran Province has also been considered by immigrants and tourists due to its relative location and prevailing environmental conditions. Such advantages have intensified the population increase and the built space there. Accordingly, in this study, the trend of population growth and space built in urban and suburban environments (suburbs and villages) were measured from 1975 to 2020. In this analysis, population and housing general census data were obtained from Sentinel 1 and 2, and Landsat satellite images. The results show that, during the period under review, from 1975 to 2020, the area of the land built in the province has increased almost 3.5 times from 20 thousand hectares to 71 thousand hectares. The annual growth rate during this period is approximately 2%, which is 2.04% for the urban lands and 3.45% for the suburban lands. For the population, this ratio gets inverse, i.e., the annual growth is 2.85 for the urban population and 0.75 for the suburban population. The percentage of urban land changes was higher in Savadkuh with 44% and Behshahr with 39%, showing that the suburban lands had a significant growth in these counties.

In recent years, with the increasing population, there have been significant changes in the state of land cover, and this trend will continue in the future. Currently, unprincipled change of the land cover is one of the most important problems in the cities of the country, and many of its harmful effects may become apparent in the near future. This study aims to investigate the situation of land cover change in the outskirts of Rasht metropolis seeks to answer the questions that what are the factors affecting the acceleration of the process of land cover change? What are the strategies to slow down this process and what has been the trend of land use change (agriculture to residential) in Rasht city in recent years? The present study has a descriptive exploratory method and a qualitative approach. In order to collect the required information from the two methods of library studies and survey study through conducting interview in a semi-structured and in-depth method used. Findings and results in this study show that the components affecting the change of marginal land cover can be divided into different social, economic, physical, environmental and managerial categories In this regard, the migration of people from the surrounding villages to the city and the creation of the phenomenon of suburbanization and the tourist nature of Rasht and the high attraction of tourists and increasing the phenomenon of urban dispersion are among the most important factors.In general, it can be concluded that the lands on the outskirts of metropolises are the most important pillars of any city.In this regard, it can be said that there are various strategies such as allocating green taxes for land use change - promoting intermediate development and redefining the position of agricultural activities to reduce the speed of these changes, which Their timely implementation can eliminate or reduce the negative effects of land cover change.

The growth of sub-urbanism in recent decades has led to the weakening of inner-city centers and the destruction of the social life of these centers. The most important consequences of evacuation of urban centers are economic recession, population evacuation, unfavorable urban governance, reduced demand for purchases and lack of infrastructure investments. Therefore, the revitalization of urban centers, as the beating heart of cities, plays an important role in improving the quality of residents’ lives. Business Improvement District (BID) is one of the most successful methods with an economic approach to urban centers and is expanding around the world. The aim of the present study is to measure and extract the drivers of improving business districts in District 6 of Tehran with a futures research approach. This research is applied in terms of purpose and uses a combination of documentary and survey methods. Moreover, in terms of nature, based on a new method of future research, it is analytical and exploratory taking a combination of quantitative and qualitative approaches. The statistical population of this study includes 15 managers and experts in the field. The results indicate that the key drivers affecting the creation of business environment in District 6 of Tehran have not been identified. Also, two-dimensional factors such as good urban governance, municipal performance in providing services and facilities, private and public sector investment status, quality of buildings and materials in the housing and construction sector, etc. have a very high capacity to become key players in the system.