Valuation of Indices and Components of Sustainable Urban Regeneration of the River Valleys of Tehran City (Case Study: Darakeh River Valley)

Document Type : Research Paper


1 PhD Student in Urban Planning, Islamic Azad University, South Tehran Branch, Tehran, Iran

2 Associate Professor of Urban Planning, Tarbiat Modares University, Tehran, Iran

3 Assistant Professor of Urban Design, Bu Ali Sina University, Hamadan, Hamadan, Iran



Urban river-valleys focus attention on city's spaces that have potential, capability and sensitivity and these particular areas in the current settlement system should not become to places that stimulate poverty and the counter-development flow. Tehran river-valleys, as sensitive zones with ecological, environmental, tourism, and urban landscapes, must be protected on the one hand, and on the other hand, the capacity of urban streams should be protected along the path of Tehran city development considered as the driving force behind developmental trends. In order to improve and rebuild these zones, interventions have been carried out in different stages. Quality of life in the valleys has been declined over time however there are various plans for it in Tehran. Urban river-valleys have been plagued by high human interference and physical, biological and human heterogeneity so that sustainable regeneration due to its multidimensional content and appropriate attention to decision making and management aspects is more appropriate and can provide better solutions to improve natural conditions with a spatial structure in mind. Sub-themes such as livelihood, spatial identity, attention to poverty and economic condition, urban governance, and citizen participation were a set of factors that improve the quality of Tehran's urban highways (sample studies of the river) and thus enhance the quality of life in Tehran and in order to establish a link between the concept of urban sustainable regeneration and river knowledge, the final model was measured. Therefore, in order to link environmental values ​​with city and river protection, the present study seeks to answer the question of how is the model of development and integrated comprehensive protection of Tehran’s urban river-valleys with emphasis on theoretical framework of sustainable regeneration? The goal of sustainable regeneration of urban river-valleys with integrated approach and protection is to link environmental values with urban development, improve quality of urban life, regulate human-nature relationship, preserve and revitalize river-valleys to create sustainable living, diversify resorts and prevent natural crises such as floods. Therefore, the overall objective of the research is to create a conceptual model of urban sustainable regeneration of Tehran’s urban river-valleys with a focus on Drakeh River-valley and then determine the effect of each of the components and indicators on the mentioned model.
The research method is to propose a sustainable regeneration initial model of Darakeh river-valley based on the theoretical framework with an integrated comprehensive development and protection approach then SEM and the second root estimation of the approximate error variance were used in order to analyze the quantitative data, evaluate the components and indicators and select the best model, respectively. The main purpose of applying SEM technique in this research is to use methods and parameters that can test, validate or refute the conceptual model of theoretical framework of the research. The main application of this technique is in multivariate themes, which considering each independent variable with multiple dependent ones. Researchers tend to use SEM because of the following reasons: a) estimation of multiple relationships, b) ability to measure latent variables (concepts not seen), c) calculation of measurement error D) ability to investigate the effect of co-linearity; e) Test of false and unrealistic relationships.
 Results and discussion
The findings of the study are: 1) Proposing a sustainable regeneration model of Darakeh river-valley with a comprehensive development and protection approach 2) Quantitative evaluation of model components and indicators 3) Determining the interaction between hidden variables and explicit ones of model 4) Relationship between explicit component variables Together 5) Verify the basic conceptual model.
The result of this study is that besides innovating the proposed sustainable regeneration of urban river-valleys of Tehran (SRURVT) model with emphasis on Darakeh river-valley, quantitative evaluation of components and indicators have been done in proposed model. Components and their importance were quantified, and the importance of the indicators were determined for each component, while the interaction of the components metrics with the quantities was shown in the conceptual model presented in Initially, weights of environmental, economic, socio-cultural, physical and managerial components and related indicators were considered equal. Via SEM, the relationship between hidden and explicit variables in the initial conceptual model was modified and finally the modified model quantified the value and weight of the components (independent latent variables). So that in terms of sustainable regeneration in the river-valley, the importance of components was determined as following, environmental indicators with factor 1, socio-cultural with 0/85, physical with coefficient of 0/81, economic factor with 0/79 and finally management factor with 0/71, respectively.
These quantities indicate the priority of actions and weight of each component which ultimately provides a model for Darakeh river-valley that can provide a basis for starting applied research on sustainable regeneration of other river-valleys of Tehran.


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