somayyeh Alizadeh; Akbar Asghari Zamani
Volume 2, Issue 5 , December 2021, , Pages 15-31
Abstract
The financial inability of executive agents and urban management in helping housing programs and financing urban services has been effective in the process of formation and nature of urban density as well as the realization of unforeseen densities in urban development plans. Therefore, in recent times, ...
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The financial inability of executive agents and urban management in helping housing programs and financing urban services has been effective in the process of formation and nature of urban density as well as the realization of unforeseen densities in urban development plans. Therefore, in recent times, the policy of selling excess building density by municipalities has caused disruption in the country's urban system, space organization, and urban appearance. Due to these factors, there is a lack of service uses and an increase in mass congestion, which over time has led to cities becoming a platform for land and housing. In the present article, we intend to study the changes in building density in Zafaranieh town of Tabriz to measure the paradigms affecting the formation of building densities in the study area. The method of the present research is applied in terms of purpose and descriptive-analytical research in terms of nature. Accordingly, two main methods of field-library have been used to collect data and information. Thus, after reviewing the theoretical foundations of the research, first, using the approved plans of the city of Tabriz, the number of floors and criteria related to urban densities of the study area during the period 1399 - 1390 were extracted; Then, by referring to the Municipality of Tabriz Region 2, the number of permits issued, the number of building floors and the revenues from the sale of density were determined. To analyze the data, using Arc GIS geographic information system and models such as CrossTeb, Holdern model, and Shannon model, changes in the number of building floors, the growth rate of saffron town, and the distribution of altered parts have been analyzed. The results of this study show that in the period 1399 - 1390, changes in building density in the study area were quite noticeable that the most important factor in this field was the sale of density to provide municipal revenue.
Akbar Asghari Zamani; Khalil Valizadeh Kamran; Robab Rahmani
Volume 2, Issue 4 , September 2021, , Pages 75-92
Abstract
The values of urban appearance street space are different from the values of other physical elements of the city. The street space has linear content and transit function to introduce its appearance in special circumstances. In other words, the main part of the street space is only visible from an angle. ...
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The values of urban appearance street space are different from the values of other physical elements of the city. The street space has linear content and transit function to introduce its appearance in special circumstances. In other words, the main part of the street space is only visible from an angle. Is in a state of motion that is, a dynamic, and the physical elements of the wall are regularly combined with the skyline, various sequences are. But at the intersections, the pause of the observer and the different spatial conditions cause the content of the values of the urban landscape to change. According to the above, the main elements of the body of the street are the skyline and the wall, among which the skyline is more important. The boundary skyline means the separation of the upper wall and the sky from the observer's point of view.The purpose of this study is to evaluate and quantify the skyline using the SVF index and with the help of google sketch up pro software. This quantitative assessment can guide urban planning and designer in the policies of urban geometric and development plans. For this purpose, the necessary data for the study area are collected and the operational process of research in Four steps: Create longitudinal cross-sections of selected streets in the area, 3D simulation in google sketch up the environment, determine observer points, and finally the sky access index was calculated and reporting was done. The results of the research show that Roshdieh town with an average skyline index of 43/32 has a regular skyline and Valiasr town with an average index of 40/55 has an irregular skyline. Therefore, the analysis of the obtained results and the test of the research hypothesis show that in the studied areas, there are significant differences between Valiasr town as an old and relatively planned area with Roshdieh town as a new and constructed and fully planned area.
Mohammad Ali Koushesh Vatan; Akbar Asghari Zamani
Volume 2, Issue 3 , June 2021, , Pages 49-58
Abstract
In the process of urbanization, proper land-use planning is critically important. Because the way man uses the land causes significant effects on the temperature of the city. In this regard, this research aimed to study the land surface temperature (LST) concerning land use. The research data includes ...
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In the process of urbanization, proper land-use planning is critically important. Because the way man uses the land causes significant effects on the temperature of the city. In this regard, this research aimed to study the land surface temperature (LST) concerning land use. The research data includes the land-use shapefile and Landsat 8 image for day time (path = 168, row = 32; July 2020). Retrieval of LST done by ArcMap software. In addition, to investigate the difference in average temperature between different land-uses Kruskal-Wallis test in SPSS was used.The results showed that the average temperature of Tabriz City was 28.41 ° C ± 4.62 ° C. Furthermore, its minimum and maximum temperatures are 13.55 ° C and 39.29 ° C, respectively. Also, based on the different land-uses, Tabriz Airport has the highest average temperature with an average temperature of 33.81 ° C ± 1.81 ° C compared to other land-uses. Then, military lands, barren lands, industrial lands, river, green space, under construction lands, and constructed lands with an average temperature of 32.22 ° C ± 2.52 ° C, 30.57 ° C ± 3.51 ° C, 30.51 ° C ± 2.71 ° C, 30.07 ° C ± 2.53 ° C, 29.88 ° C ± 2.94 ° C, 25.62 ° C ± 3.22 ° C and 23.61 ° C ± 3.91 ° C, have the highest average temperature, respectively. Further, between the land-uses LST was significantly different (sig = 0.000). In the following, based on pairwise comparisons, it was observed that except for the green space and river average temperatures, there is a statistically significant difference between the average temperatures of all land uses. In the following, based on pairwise comparisons, it was observed that except for the green space and river average temperatures, there is a statistically significant difference between the average temperatures of all land uses.
