Question

For Tehran, Iran. Describe the city's planning and how it grows. (in what pattern?)

Answer 1

Tehran is one the larger cities of the world having population of around 7 million people. Since the mid-20th century, The city of tehran has gained most of its phenomenal growth.  

Tehran has exercised its development process and urban planning in three ways-

1. Infrastructure design and development
2. Land use regulation
3. Policy development.

INFRASTRUCTURE DESIGN AND DEVELOPMENT-

Tehran' s transport infrastructure building as have major infrastructure projects in the city which needs infrastructure to support a population of 7 million people. The Tehran Metro was largely constructed by Chinese company with Austrian input, as well as Iranian engineering. Tehran has expanded port and airport facilities to support further demand and growth which will propel a virtuous cycle of investment and development opportunities.

LAND USE REGULATION-

Urban land distribution creates urban form and physical identity because the use of land determines cities characters including buildings, streets and public spaces. The role of land use planning on the making of physical identity as well as introduces some recommendations to improve them.

POLICY DEVELOPMENT-

Revolutionary development institutions have helped increase input use and redirect government resources toward smaller investment projects that benefit small farmers and the rural poor. Tehran has evaluated the policies and programs related to entrepreneurship also.

TEHRAN'S NATURE AND PATTERN OF GROWTH-

Spatial-temporal patterns of Tehran’s growth were analyzed using spatial metrics for the time period 1921–2011. Metrics were selected can the basis of literature Metrics were calculated using “Fragstats” software. Metrics describe four dimensions: absolute size, relative size, complexity of urban form and spatial distribution of patches. To measure absolute size, two metrics were used: (1) total urban land area, (2) Number of patches. As urban growth occurs, total urban area continually increases due to the highly non-reversible nature of urbanization. The number of urban patches metric is a measure of discrete urban areas in the landscape and is expected to increase during periods of rapid urban nuclear development, but may decrease if urban areas expand and merge into continuous urban fabric.

Relative size was measured using the mean patch size. The mean urban patch size is a function of the number of urban patches and the size of each urban area, and can either increase or decrease through time. Decreasing values of mean urban patch size implies that new urban centers are growing faster than existing urban areas. That is, urban growth occurs more as a process of new and multiple urban nuclear formation.

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