Journal of Urban Studies on Space and Place
Year:2021 | Volume:5 | Issue:3 (19)|Papers Count:6

The rapid rate of development of cities has caused extensive changes in the land use pattern around cities, and these effects of city development and urbanization can be seen in developing countries as well as developed countries. In Iran, as a developing country, the growth rate has been very high, and following that, there have been extensive changes in the field of land changes. Change of users is inevitable but it can be managed. The process of land use changes and the recognition of the effective factors and its results can help to identify obstacles, problems, analyze and understand urban issues as best as possible and become a tool for managers and urban planners to predict the future growth and development of cities and be able to manage effectively and Look for opportunities for cities. One of the biggest and most challenging issues in recent years in Iran is the change of urban land use, which has many effects in cities, and if these changes are carried out in an uncontrolled and unsupervised manner, they will have irreparable effects. . The purpose of this research is to investigate the effects of land use change on land use planning. Due to the spread of these changes, urban design and urban planning, using error tests and investigations, should always seek to adapt to the conditions that have arisen and are ahead, and they need changes and modernity of opinions in the previous standards. Therefore, he must always adapt to new conditions. It is for this reason that the discussion of flexible planning has been brought up and paid attention to in order to achieve better results than in the past. The most change of land use in cities is related to the change of use of agricultural lands and their conversion to urban uses, which causes more instability in cities, which is caused by the added value of the change of use in urban spaces. With control tools, mayors have a very effective role in preserving and maintaining existing natural lands, and by using their control tools, they can prevent land trading and changes in the use of natural lands to other uses.

Following the rapid growth and increasing expansion of cities in the last few decades, the issue of urban land use has attracted the attention of urban planners and has become the subject of numerous researches, the results of which indicate significant changes in the field of land use, also without land use planning. It is not possible to achieve an optimal pattern of living in cities. Today, urban land use planning deals with how to use and distribute and protect land, spatial and spatial organization of activities and functions, based on the wishes and needs of the urban community and specifies the types of land use. The spatial expansion of cities and the integration of villages and their surrounding lands is one of the important consequences of rapid urbanization, which has had a significant effect in regional capitals. The fair spatial distribution of facilities and resources among urban areas as one of the most important elements of a desirable urban life is one of the requirements for establishing a dynamic, coherent and progressive society, but economic inequality and poverty in the society cause the formation of informal settlements and land use changes, especially agricultural lands around cities. has been In this research, we have reviewed some of these researches.

One of these tools is the land separation patterns, which allows land users and urban designers and planners to control the existing and future development and construction of the land and adjust it to the standards and criteria appropriate to the form and Close the shape of the city. This research intends to answer its main question, "What is the appropriate and optimal model for land use planning and what are its main components? " The research method is a descriptive-analytical and argumentative method, which by using the collection of library information and studying them as the theoretical background of the research, we will deal with the problems and components of the model of land separation and find out from those criteria and components that are effective on the optimal model. Identify the separation of the land. The purpose of this research is to identify the optimal pattern of land separation in the framework of the country's laws and regulations and to describe its effective components and dimensions. General factors such as economic conditions or existing laws and regulations in the separation of land, unique factors of land such as land conditions, ownership, etc. play a decisive role. Therefore, it is pointless to consider a fixed pattern for all urban spaces due to the presence of factors such as social and cultural, political, and environmental factors that have unstable and unstable variables. be reviewed and monitored.

The analysis of social areas describes the mechanism by which households select or are assigned specific residential areas within the city. This mechanism is not definitive and there is no clear plan related to it. For this purpose, for the analysis of social areas, it is necessary to use a method that solves the different spatial complexities within and between departments. In the meantime, the model of three constructions is considered as one of the comprehensive and integrated methods in the analysis of social areas, which separates or differentiates social areas based on three factors: socio-economic status, housing and household status, and segregation or racial discrimination. For this reason, in the current research, using the descriptive-analytical method and the three-structure model, firstly, it determined the criteria that can be used in determining the social areas in the seventh district of Isfahan city as the case study of this research, and then, based on the overlapping map technique, the resulting maps of criteria have been combined and finally, the social areas of 7th district of Isfahan have been depicted in a map based on the analyzes carried out.

Agriculture is one of the most important sectors that are graetly affected by climate change. Reducing the level of agriculture, reducing soil fertility, reducing water level, increasing animal mortality, reducing farmers' income, increasing food and product prices, growth of unemployment, etc. One of its consequences is. Considering the location of Sistan and Baluchestan province in the driest region of the country and increasing drought, this study aimed to investigate the role of climatic migration in reducing crop productivity by usingGIS and IO method in Sistan and Baluchestan province.-For this purpose, first, precipitation data (mm) of temperature and available water were studied in 1991-1400. The results show that rainfall, seasonal temperature and trend water rate decrease, increase and decrease respectively, which has a significant effect on agricultural yield in the region. Then, by overlay method and statistical analysis in GIS environment, by preparing slope maps, for elevation through overlapping layers, land shape map was prepared and then by overlapping the land shape layer, land use, soil and vegetation distribution map of drought distribution in the region and information layers, the relationship between drought and agricultural crops of agricultural lands of the region was prepared-. The results indicate that the area under cultivation of the studied crops (wheat, barley, corn, potatoes) has changed, which is a negative value compared to the base year. Considering the position of Sistan and Baluchestan province in the driest region of the country and increasing drought and desertification of this region, economic and social problems such as migration from these regions are among the most important effects of drought. At first, the study of data obtained from SPI index, precipitation data (mm) temperature and available water values, 1991-1400 indicates that rainfall, seasonal temperature and trend water are decreasing, increasing and decreasing, respectively, and drought is increasing. These changes have a significant effect on the yield of the studied crops (wheat, barley, corn, potatoes) in the region. . Then, by overlay method and statistical analysis in GIS environment, drought distribution map in the region and information layers, investigation of the relationship between drought and agricultural crops, agricultural land status map of the region were prepared. The results of statistical analysis indicate that the level of cultivation of the values of the studied products has changed, which is a negative value compared to the base year. According to the results of this study, a considerable percentage of agricultural lands are no longer suitable for cultivation and another percentage is in a sensitive and deteriorating situation. In Sistan and Baluchestan province, the rate of drought years is increasing, and increasing severe and acute droughts can affect agriculture and consequently, employment in related jobs and consequently, migration. Environmental problems such as drought in Sistan and Baluchestan province have also created problems for people's lives that people have been forced to give up their homes and lives and migrate to other cities of the province. . These migrations certainly have different effects and results such as increasing marginalization, increasing the price of housing and land in migratory provinces, reducing the level of agriculture, reducing soil fertility, reducing water level, increasing animal mortality, reducing farmers' income, Increasing the price of food and products, lowering the quality of agricultural products, creating problems and cultural encounters, unemployment, etc. Therefore, it is expected that to control the consequences of these migrations with strong planning and management to prevent any crisis and problems in the country.

The planet is becoming a world of cities to the extent that in this century we will see the significant development of cities in terms of size and number. Although urbanization brings prosperity and comfort to rural migrants and increases the income and perhaps the socio-economic base of migrants, it may endanger the health of people and their health Issues such as air pollution, noise pollution and urban pollution in general, migration from the village to the city is an inevitable process that takes place with different standards in all countries of the world, including our country, and this has attracted the attention of most urban thinkers. The cultural inconsistencies that immigrants have with the urban population increases the possibility of social deviations. The research method is analytical and it is classified as applied research in terms of the type of research. The statistical population of the research is 10, 038 people aged 20-34 from rural areas living in Semiram city, and using Cochran's formula, a sample size of 320 people was selected. The sampling method in this research is random. The findings of the study show that there is a significant relationship between the variables of age, access to facilities and welfare services of villagers, the level of satisfaction with educational facilities, the ease of access to the city and the influence of mass communication tools and the desire to settle in the city. Also, there was no significant relationship between the variables of socio-economic base, gender, distance from the village to the city, and the type of use of mass communication tools and the desire to live in the city.