ARTICLE INFO

Article Type

Original Research

Authors

Saeidi Mofrad   S. (*1)






(*1) Department of Urbanism, Faculty of art and Architecture, Mashhad Branch, Islamic Azad University, Mashhad, Iran

Correspondence

Address: Department of Urbanism, Faculty of art and Architecture, Mashhad Branch, Islamic Azad University Ostad Yusofi Street, Emamieh Boulevard, Ghasem Abad, Mashhad, Iran. Postal Code: 9187147578.
Phone: +98 (51) 38942474
Fax: +98 (51) 36638920
Saeedi.s@mshdiau.ac.ir

Article History

Received:  July  14, 2020
Accepted:  September 26, 2020
ePublished:  March 18, 2021

BRIEF TEXT


Urban growth and development are unavoidable processes in urban areas. Urban redevelopment is a strategy to tackle both problems of inefficient available urban spaces and the shortage of free space for urban development.

Urban redevelopment stresses the use of inefficient spaces and uses them for new urban needs when facing the shortage of free space. Buildings influenced by their previous land use or their surrounding environment that might be contaminated by various pollutants and are mainly located in the urban developed areas are called Brownfields [Ferber et al., 2006]. Brownfields sustainable development program in Europe shows that the use of brownfields can reduce the pressure on green space and solve the problem of urban land shortage [Ahmad et al., 2018]. Aruninta (2006) used a questionnaire to assess peoples' dissatisfaction with urban space to identify the brownfields in governmental wastelands in Bangkok, Thailand.

This study aimed to identify the main components and indicators to detect the brownfields in Mashhad and their redevelopment prioritization factors.

This is an empirical study in terms of its purpose and analytical-descriptive in terms of the methodology.

The current research is carried out in all districts of Mashhad.

All 13 districts of the Mashhad metropolis are studied.

Multi-criteria spatial decision support system and its hybrid models (TOPSIS and SAW) were used for the analysis.

Formation of the spatial database for the brownfields of Mashhad: Lands used to be industrial factories and manufactories and are abandoned now, industrial factories located inside the urban areas and have industrial activities were detected to be used in the provision of a database. Determination of the influential indicators in setting priorities: considering the available information and their importance according to the urban sustainable development and the influence of the suggested projects from the authorities (comprehensive urban development plan, 2006). Brownfields' characteristics were classified into physical, economic, environmental and national characteristics. Table 1 shows the influential suggested criteria and sub-criteria in prioritizing the brownfields. Net analysis: After preparing the brownfields of Mashhad database and determination of the criteria Mashhad's passages net map was prepared. This net map is capable of distance calculations using spatial analysis and net analysis in GIS to calculate the distance of each piece of land from the plan's zoning, its suggested spots and its suggested passages in Mashhad's development plan. The mean of access routes was calculated for each zone (Table 2). Multi-criteria spatial support system: Multi-criteria spatial support system was used for weighting, mixing the indicators, prioritizing different zones according to the suggested indicators and preparation of the prioritization map. Statistical analysis in this model which is dependent on multi-criteria methods has the potential to be shown on the map and to be shown in space. Figure 5 shows the weighting process of each indicator in the software environment. Brownfields in district 12 of Mashhad are the top priority for the urban redevelopment. Some of these lands are abandoned and without any function, while some others have industrial-workshop functions. Samen district is the last priority because there is no industrial-workshop function in it. SAW and TOPSIS indicators were calculated for the urban areas (Table 3) using the results of criteria analysis and brownfields' prioritization indicators. The brownfields are scattered mainly in the outskirts and the first five priorities of the brownfields for redevelopment are located in districts 12, 10, 7, 6, and 3 (Figure 3).

The results of the current research are consistent with the results of Green (2018) in terms of the indicators influencing the prediction of the brownfields that are proper for redevelopment. Social and economic indicators and their relationships are almost the same in both studies. Tonin & Bonifaci (2020) approve the results of the current study. The brownfields potentials and characteristics in particular its economic potentials improves the attractions of the urban areas for developers. Loures & Vaz (2018) provide similar advantages for the redevelopment of the brownfields and its effect on the life quality and urban area's quality. Simeonova & Van der Valk (2016) gave the suggestion of the use of brownfields to change them into green spaces.

There is no suggestion reported.

There is no limitation reported.

There is a clear relationship between the urban areas formation and the aggregation of the brownfields in Mashhad. Although most of the industrial entities used to be located at the outskirts, they have been transferred into the inner parts of the city because of the expansion of the city. District 10 and 12 as the new urban development regions are the first and second priorities for brownfields' redevelopment.

We tend to thank the Azad University of Mashhad.

None.

None.

This study is carried out at the author's personal expense.

TABLES and CHARTS

Show attach file


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