Urban Planning
Rasoul Ghorbani; mahdieh tahooni
Abstract
Introduction
Considering that the population growth rate of the surrounding cities of Tabriz metropolis in 2006-2010 Sardroud, Ilkhichi, Osku, and Basmanj cities is 2, 1.8, 0.87 and 0.83, respectively, that the growth rate of Sardroud city is more than other all surrounding cities of the metropolis ...
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Introduction
Considering that the population growth rate of the surrounding cities of Tabriz metropolis in 2006-2010 Sardroud, Ilkhichi, Osku, and Basmanj cities is 2, 1.8, 0.87 and 0.83, respectively, that the growth rate of Sardroud city is more than other all surrounding cities of the metropolis of Tabriz. The study of statistics related to Sardroud city shows the changes in population growth and stages of growth and development of the city so that the population has increased 2.6 times and the area of the city has increased 2.7 times during the 35 years (1976-2011).
The increase of industries of Sardroud has played a significant role in the spatial-physical changes of Sardroud. By comparing the position of different economic sectors in Sardroud with East Azerbaijan province, the total growth rate of the reference economy in 1996-2006 has been equal to 1.6. Also, the province's economic structure during the mentioned period has always been negative and has had a downward trend. The variation rate of the economic structure in the province has been 3.126% in 1996-2006, in comparison with Sardroud city with a high variation coefficient of 7.164%.
Population growth and increase in industries in Sardroud city have led to the unplanned constructions and many changes in the spatial-physical structure of the city, the destruction of agricultural lands (so that the area of agricultural lands and gardens in 1999 has been 6382180 square meters (65.2%) and, 3252635 square meters (26.35%) in 2011), and the emergence of various spatial-physical, environmental, social and economic problems, including land-use change, air pollution, water, soil, negative effects on green space, etc. Therefore, the current study can contribute to the logical understanding of these factors and recognizing the urban issues and problems, proper and rational dealing with these issues, and the thoughtful and tactical design for the future development of the city by recognizing and assessing the physical-spatial growth of the city in two periods of 1998 and 2012 and its changes over time.
Data and Methods
The research method is adjusted based on the nature, subject, and objectives of each research. Therefore, the current study is comparative-analytical research and is applied- developmental in terms of nature. The information related to the area, etc. were collected from the master plan (provided by the Rajan Ab Zagros consultant engineers) and other researchers and is classified based on the research requirements. Relative quantitative entropy model, Gini coefficient. Moran, Gary, and adjusted Gary coefficients were used to analyze the data.
Results and Discussion
Based on investigating the density ratio of Sardroud neighborhoods in 2011, the entropy value of Sardroud was 0.91 in 2011. The entropy value in 1999 has been 0.85 for Sardroud neighborhoods. Although it has had more concentration compared with 2011, the entropy value has been towards zero. However, its value is high and indicates the sprawl in the neighborhoods of Sardroud city.
The obtained Gini coefficient for 1999 and 2011 is 0.35 and 0.36, respectively, indicating the unequal distribution in two decades. However, the Gini coefficient value for 2011 shows the unequal dispersion of the population comparing to 1999. Moran coefficient was calculated for 1999 and 2011. The obtained value for 1999 is 0.03, indicating the unipolar random accumulation pattern of Sardroud similar to most of the cities in Iran. Also, the obtained value for 2011 was 0.01, indicating the movement of Sardroud towards being multipolar in the future. Gary coefficient was also calculated for 1999 and 2011. The obtained values for 1999 and 2011 are 0.05 and 1.99, respectively. It indicates that in 2011, the city was closer to the sprawl dispersion pattern and shows that accumulation and density in Sardroud were more in 1999, comparing to 2011, and the urban sprawl increases in 2011.
The calculations show that Sardroud city has been towards sprawl development, and this dispersion leads to the destruction of the agricultural lands and gardens.
Conclusion
According to the research findings, this type of urban structure has had many negative consequences in different environmental, social, and economic sectors, including destruction of the agricultural lands around the city and so on.
- Taking efficient urban management policies to consider density, public transportation and land use that affect the urban form of Sardroud city.
- Since the city is inevitable to grow and expand and population growth is always present in cities, it is necessary to use specific strategies and tools to manage the growth of cities and effectively control the sprawl expansion of cities, to avoid further waste and destruction of suitable suburban agricultural land around the cities and reduce the negative consequences of this type of urban development.
Urban Planning
Rasoul Ghorbani; Mahdieh Tahooni; Naser Ghaderi
Abstract
Introduction The study of statistics related to Sardroud city shows the changes in population growth and the stages of growth and development of the city, so that the population during the 35-year period (1976-2011) has doubled and the area of the city has doubled Increasing industries near ...
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Introduction The study of statistics related to Sardroud city shows the changes in population growth and the stages of growth and development of the city, so that the population during the 35-year period (1976-2011) has doubled and the area of the city has doubled Increasing industries near Tabriz metropolis, which is located in Sardroud city, plays an important role in changes. As a result, population growth and industrial growth in Sardroud led to unplanned constructions and many changes in the spatial-physical structure of the city, the destruction of agricultural lands so that the area of agricultural lands and gardens in 1999 was 6382180 square meters (65.2%) per year. 2011, 3252635 (26.35%) and the occurrence of various spatial-physical, environmental, social and economic problems in Sardroud city. Therefore, this study evaluated the spatial-physical effects of Tabriz metropolis on Sardroud city with the explanation that the factors affecting change The physical-spatial form of the city informs us of the logical understanding of these factors and of understanding the root of its problems. Each and every logical and correct confrontation with the problems as well as the thoughtful and thoughtful design of the future development of the city helped. Considering the above issues, the questions are as follows: - Has the proximity to Tabriz caused changes in the demographic structure of Sardroud city?- Has the spatial-physical developments of Sardroud city been affected by the expansion of industrial-workshop activities? Methodology In the present study, the method of analytical-comparative research is the type of applied-developmental research. Relevant information from comprehensive study studies and other relevant sources are obtained and classified according to the research needs. Then, the statistical indicators of the research are extracted from the mentioned data based on statistical relations. Quantitative models have been used to analyze the information, which are as follows: Study and analysis of demographic changes using population estimates based on statistics of fertility rates and mortality in Sardroud city through people software, calculation of economic activity diversity index using From the Gibbs-Martin model, comparing the position of different economic sectors of the city with respect to the province using the share change model and the Izard model and measuring the physical-spatial form of the city using quantitative relative entropy models, Gini coefficient, Muran, Gary, and Gary adjustment. Results and discussion In this study few models have been used. According to Bozhugarnia's diagram, the role of Sardroud city in 1996 was industrial, while in 2006-2011 it has taken on a commercial role. Comparing the position of different economic sectors of Sardroud city compared to East Azarbaijan province using the share change model, the growth rate of the total reference economy for 1996-2005 was equal to 1.6 and the economic structure of the province during this period has always been negative and declining. And the employment rate in agricultural sectors is -0.12, industry -0.04 and services are equal to 1.1; and by examining the changes in the economic sectors of Sardroud city based on the Izard model, the only service sector in the city compared to its similar coefficient in the level. The higher province is 252.6 against 137.3 percent, and the results obtained from the measurement of spatial-physical models indicate this. The form of the city is moving towards urban distribution and the values of the indicators in 1999 and 2011 are as follows: (relative entropy = 0.85, Gini = 0.35, Moran = 0.03, Gary = 0.05) And (relative entropy = 0.91, Gini = 0.36, Muran = 0.01, Gary = 1.99). Which has caused the destruction of agricultural lands and orchards, so that in the city of Sardroud in 1378 the share of orchards and agricultural lands was 65.2 and in 1390 it has reached 26.35%. Conclusion Considering that Sardroud city has the most impact from Tabriz metropolis, the development of urban infrastructure of Sardroud city should be considered in line with Tabriz metropolis so that the lack of infrastructure does not lead to marginal growth and inappropriate spatial-physical changes. And in areas where marginalization has taken place, urban renewal and rehabilitation measures and empowerment measures should be taken. Examining the changes in the economic sectors of Sardroud city in the field of industry, private sector investment should be activated and private sector investment in various economic fields should be invested in government economic policies, increasing the amount of investment from city credits, equipping and further development of Shahid Rajaei industrial town. It depends on the carpet weaving and carpet industry in the city.The spatial-physical structure of the city of Sardroud is a pattern of urban dispersion. Due to the need to guide the development of the city towards greater sustainability, the need to change it and the use of strategies for greater compression of the city is felt.- In order to prevent inappropriate urban-physical spatial development towards vulnerable and ecological areas, it is necessary to mention suggestions for improving urban development. Due to the poor growth of the city and its builders, it is necessary for the municipality to exercise strict supervision according to the existing laws and regulations, or for a specific organization or unit to do so under the supervision of the governorates or municipalities.
Urban Planning
rasol gorbani; mahdieh tahooni
Volume 23, Issue 67 , April 2019, , Pages 243-262
Abstract
Urban growth in itself is a rogue character. We need to harness and guide urban development policy is a great responsibility, because on the one hand and, on the other hand led to eliminate troubles and the emergence of rational longevity of buildings of particular abnormalities that prevent physical ...
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Urban growth in itself is a rogue character. We need to harness and guide urban development policy is a great responsibility, because on the one hand and, on the other hand led to eliminate troubles and the emergence of rational longevity of buildings of particular abnormalities that prevent physical dimensions .The study area in the city Sardroud research and analytical research method - comparative data and information needed in the form of documentary and field has been prepared. The analysis of the quantitative data relative entropy, Gary coefficient, the Gini coefficient Moran used to measure the results of spatial models - physical indicators of the form in which the unipolar model of random accumulation of urban distribution and is gone and values in 1378 and 1390 contracts respectively: (a relative entropy = 0.85, Ginny = 0.35, Moran = 0.03, Gray = 0.05) and (relative entropy = 0.91, Ginny = 0.36, Moran = 0.01, Gray = 1.99). In total, these values show that the city has gone to the dispersion pattern and causes the loss of farmland and gardens in the city so that the Sardroud in 1378, while the share of orchards and agricultural land was 65.2percent of the land in 1390 to 26.35percent and consequently the spatial and physical structure of the city has changed over time.
