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Showing 165 results for Spatial
Volume 27, Issue 3 (10-2023)
Abstract
The education of environmental values as one of the fundamental elements of sustainable development as well as a mechanism for the reconstruction and revival of environmental capitals has an important and necessary role. This research aims to identify and study the importance of spatial components of the educational policy model of the mentioned values to achieve this goal, it has taken into account sustainable development theories and educational strategies as well as behavior and ethics-based theories in the field of environmental values. The components and indicators of the study include identifying, extracting, and using questionnaire tools and completing them based on the opinion of 32 experts in the field of environmental education, studying and making a comparative analysis of the data obtained from SPSS software, One-way analysis of variance (ANOVA) and Duncan's post hoc analysis. The results confirm that the component familiar with the environment and ecological system has the least importance with a value of 2.925, and the most important component behavioral-cognitive with a value of 3.5533 has been assigned to itself in the formulation and implementation of environmental values policy.
Volume 27, Issue 3 (10-2023)
Abstract
Tehran is one of the most polluted cities in the world. The air pollution is caused by different factors such as centralization, increased traffic and incorrect location of the spatial pattern, consumption of fossil fuels, lack of rules and regulations for limiting industrial areas and nonobservance to the environmental guidelines. Sometimes, these factors are intensified because of the climatic factors. The aim of this study is to identify the relationships between the residential urban factors and Tehran's air pollution and to determine the extent of their importance. The intended techniques found through radar data showed that the physical pattern and the consequences of the urban planning system are considered some of the effective structures in increasing the air pollution in Tehran. Hence, the correlation coefficient between the height environment of urban buildings and constructions (the third dimension of the city) and Tehran's air pollution was calculated to be 0.86. In other words, in the case of proper planning or with the possibility of modifying the structure of the height environment in city up to 86%, it is possible to adjust and control the air pollution. The results were in line with the spatial pattern of PM2.5 particles and carbon monoxide regarding urban land use, industries, commercial centers, transportation, organizations and health centers and had the highest coefficient of determination with the spatial pattern of Tehran' air pollution. Considering the traffic, the index had the highest correlation with the spatial pattern of PM2.5 particles. Meanwhile, in the dangerous and unhealthy parts of the spatial pattern, a large number of nodal points with little distances formed traffic channels. Thus, by identifying these channels and managing urban traffic, the air pollution can be controlled to a larger extent. It should be mentioned that because of the impossibility of decreasing or eliminating driving forces in the creation or intensification of the air pollution, the residential environment of Tehran can be directed toward an appropriate environmental pattern by changing or maintaining the structures and functions through a change in the patterns of macro-urban management and the urban planning models consistent with the human functions and spatial pattern.
Volume 27, Issue 4 (12-2023)
Abstract
The rapid growth of the urban population in Shiraz over the past few decades has caused the physical expansion of the city and its enchroschment on sorrounding villages and settlemnts leading to numerous challenges and inadequacies in the pheripheral regions there. Some of these problems are poverty, marginalization, rising housing prices, lack of adequate facilities and welfare services, environmental pollution and overcrowding. Using different indicators, the present study tries to evaluate the inadequacy of peripheral settlements of Shiraz metropolis. Thus, in order to manage urban growth and its related difficulties, developing countries have decided to implement various policies such as family planning, rural development, controlling rural-urban migration, limiting the growth of large cities, symmetrical urbanization and new city development. Nevertheless, most developing countries have witnessed rapid population displacement to mega cities in recent decades
On the other side, despite metropolis’ role in national development, increasing process of metropolitanization in most developing countries has cussed many problems which resulted in many challenges in the end. City sprawl and relocation of activities and populations from centre to outskirts of the city as well as the population distribution is one of the most important sustainable challenges in metropolitan areas. In developing countries, growth and expansion of metropolis space has been associated with various issues and resulted in different types of environmental problems such as reduction of life quality, rapid growth and mis-management of low-income settlements on the outskirts and continuation of such problems will worsen the existing situation in the not too far future.
Volume 28, Issue 3 (12-2024)
Abstract
The examination of the official metropolitan regions of Iran elucidates their pivotal function in the configuration of the spatial frameworks of provinces. These regions serve as economic and social nuclei, shaping the allocation of resources and fostering development. Comprehending this function is instrumental in developmental strategizing and mitigating regional disparities. This research investigates the influence of metropolitan regions on the spatial configurations of provinces through the analysis of demographic concentration, regional activities, and urban hierarchies. Quantitative techniques, including the Ttest, Kmeans clustering, and Moran's I index, are utilized in this scholarly inquiry. The results suggest that the eight provinces possessing established official metropolitan centers exhibit a higher level of advancement compared to the 23 provinces that do not have such centers. Furthermore, the adjacent provinces surrounding these metropolitan regions also demonstrate a greater degree of development. The outcomes derived from the Moran's I index illustrate a clustered spatial arrangement, which is corroborated by the Inverse Distance Weighting (IDW) map, thereby underscoring the concentration of development in the central plateau of Iran. Nevertheless, the province of Khorasan Razavi deviates from this pattern due to its geographical proximity to less developed regions. The application of Kmeans clustering has identified Tehran, Isfahan, Fars, and Alborz as the most developed provinces, while Qom and Sistan and Baluchestan are categorized within the less developed cluster. These results underscore the critical importance of metropolitan areas in facilitating the structural transformations occurring within Iran's provinces.
Volume 31, Issue 3 (8-2024)
Abstract
Today’s urban life has encountered with a number of challenges especially in social and spatial arenas. Socio-economic inequalities, sometimes, emerges in the form of spatial inequality. Tehran, as a metropolis and capital, enjoys effective system with higher sensitivities in national system. The city, though, with a multi and complex system has brought a large population under its arena but at the same time it is considered imbalanced with continuous growth and development. In other words, Tehran, despite a role model for macro socio-economic system, suffers from spatial disparity and imbalanced services. One of the most obvious and sharp characteristics of Tehran is its north-south spatial inequality and polarization thanks to modernisation and its elements such as cars and emerging business districts. In the post-1979 Islamic revolution, the gap between rich and poor and spatial inequality in Tehran has widened despite the promise otherwise. Urban planners and sociologists in Iran have conflicting views about the spatial disparity where some call it a historical trend and nothing to do with the globalisation process whereas others think vice versa. To know whether or not Tehran can be called a global city, the current paper tries to illustrate old and new emerging inequality patterns in Tehran. For that matter, the theory of’ Global City (propounded by Saskia Sassen) has been analyzed based on spatial maps between 1996 and 2006.
