Zinat Ranjbar; Pari Shokri Firoozjah; Gholamreza Janbaz Ghobadi
Abstract
The present study was aimed to spatially analyze the status of physical resilience in the coastal cities of western Mazandaran province with emphasis on urban regeneration. This research was applied-research in terms of purpose and had a descriptive-analytical nature,. The method of collecting research ...
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The present study was aimed to spatially analyze the status of physical resilience in the coastal cities of western Mazandaran province with emphasis on urban regeneration. This research was applied-research in terms of purpose and had a descriptive-analytical nature,. The method of collecting research data was based on the library method and field survey (questionnaire). The statistical population was 382 households in Noor, Nowshahr, Tonekabon, Chalous and Ramsar. For this purpose, one-way t-test, Idas multi-criteria decision making method and multivariate regression test were used.The results of the study according to the general finding of one-way t-test for physical resilience indicate poor resilience of coastal cities in the west of Mazandaran province in peak travel conditions and the favorable situation of the preconditions for urban regeneration in these cities. According to the results of the Idas technique, out of the five cities studied, three cities are in weak groups, i.e. "low resilience status and non-resilience". The results of applying this technique also indicate the unfavorable situation of urban regeneration in three sample cities. The results of multi-nominal regression also show that there are a significant effect of urban regeneration in promoting physical resilience of coastal cities in the west of Mazandaran province.
Geography And Urben Planning
Mehri Roozbahani; Gholamreza Janbaz ghobadi; Sadroddin Motevalli; Jalal Azimi amoli
Abstract
The main aim of this paper is to detect the ten-year changes in urban green spaces of Tehran metropolis, from 2010 to 2019, using the time series of Landsat 5, 7 and 8 images. The change detection was done in both annual and ten-year scale and the results are analyzed in two spatial scales; city level ...
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The main aim of this paper is to detect the ten-year changes in urban green spaces of Tehran metropolis, from 2010 to 2019, using the time series of Landsat 5, 7 and 8 images. The change detection was done in both annual and ten-year scale and the results are analyzed in two spatial scales; city level and municipal district-level. Detection of changes was done by a post-classification approach. The innovation of the study is efforts to reach the best results in the image classification step, for which in addition to optical and thermal bands' various features including some vegetation indices, water and built-up index, image texture components, and principal components were also used. Three classification methods including maximum likelihood, artificial neural network and support vector machine were implemented. The results indicated that the support vector machine has had the best result with 91.06% mean overall accuracy. The change detection showed a 10.58% decrease in the Tehran green spaces in the period under review. The greatest decrease, about 7.46 Km2, occurred in the period 1390-91 and the largest increase was 7.61 Km2 in the period 1394-95. Among the 22 municipal districts, regions 1 and 22 with 5.2 and 2.37 Km2, respectively, have had the highest decrease in urban green space, and regions 2 and 19 with 0.5 and 0.47 Km2, respectively, have had the highest increase.
