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Investigation of regional resilience using spatial analysis and WASPAS hybrid model (Case Study: Townships of Khuzestan Province) Full text
2018
Faraji, Amin | Arvin, Mahmoud | Atash-Afrooz, Nasrin
Natural and human hazards have caused vulnerability and resilience concepts receive much attention. Investigating the vulnerability and resilience of cities and regions shows the readiness and capacity of cities and regions to reduce the effects of disasters. If the situation of the city and the region is high in terms of resilience, Infrastructure, economic and social conditions of the residents have the ability to recover and return faster to a state of equilibrium. Besides, emergency services would be done properly. In this research, resilience was investigated on a regional scale with the purpose of assessment regional resilience dimensions in the townships of Khuzestan province. The research method is analytical-descriptive and in terms of purpose is applied. The data were extracted from the Planning and Budget Organization of Khuzestan Province`s database. The data are divided into economic, social, infrastructural, health, and environmental dimensions and 26 indicators. In order to analyze the data and weigh indices, Shanon entropy was employed. The townships were then ranked by use of WASPAS technique. The results showed that Ahvaz, Dezful, Khorramshahr, Shadegan, Shoosh, Azadegan, Shoshtar, Abadan, Izeh, Ramhormoz, Andimeshk, Behbahan, Baghmalek, Mahshahr, Ramshir, Omidieh, Karoun, Hamidieh, Masjed Soleiman, Bawi, Gotwand, Lali, Hendijan, Indica, Haftkel, Hoveiza, and Aghajari ranked 1st to 27th respectively. Undoubtedly, based on the Khuzestan province`s special position and its multi-cultural aspect, despite its rich natural resources, border situation and putting away the resiliency would result in a big crisis for the whole system. Also, the results showed that Khuzestan province resiliency related to spatial inequality.
Show more [+] Less [-]Assessment of spatial vulnerability infrastructures in Yazd province, with passive defense approach Full text
2018
Razavian, Mohammad Taghi | Alian, Mehdi | Rostami, Hossein
Nowadays, infrastructures play a significant role in the safety process in ordinary times and during the crisis. From this point of view, maintaining the safety of infrastructure against threats would be a security priority for any country; therefore, understanding current situation and vulnerability of infrastructures in a regional scale can be used as an efficient mechanism to formulate regional and national security strategies. This paper assesses the vulnerability of infrastructures with passive defense approach and analytical method, in Yazd province. The analysis of data and information collected were done with analytic network process model (ANP) and geographic information system (GIS) due to the interaction between infrastructures. The results showed that about 51 percent of province area is in the situation of high and very high vulnerability. The central part of the province, Yazd and Meybod, is the most vulnerable regions, because of their failure to comply with principles of passive defense, favorable environmental conditions, further concentration, centralization of infrastructure, and political, administrative, and geographical centrality.
Show more [+] Less [-]Ecological impacts assessment of land use change on the natural structure of the Gharesoo Watershed Full text
2018
Mehri, Azade | Salmanmahiny, Abdolrasoul | Mikaeili Tabrizi, Alireza | Mirkarimi, Seyed Hamed | Sadoddin, Amir
In order to evaluate the impacts of land use change, the quantification of landscape structure through relevant metrics can be used. These metrics are appropriate owing to the fact that they are measured easily and take low cost and time. The goal of the present study is to investigate the ecological impacts of land use change on the natural structure of the Gharesoo Watershed in order to identify the highly affected areas. Firstly, the amount of land use change between 1984 and 2013 was calculated. Then, landscape metrics were used to investigate the spatial patterns of land use change. Finally, an ecological impact index based on current land use was established. The results showed that during the period studied, areas of forest and agriculture have decreased by 12 and 5 percent respectively, and other uses including residential-industrial, rangeland, and transportations have increased by 292, 143, and 176 percent respectively. Landscape metrics analysis indicated a decrease in compactness and an increase in fragmentation and degradation of the landscape. According to the ecological impact index map, approximately 28 percent of the region is exposed to high and very high impacts. These areas can be used as a base for future studies and may be earmarked for intervention measures such as improving land management and decreasing fragmentation.
Show more [+] Less [-]Evaluating Ecological Networks of Urban Landscape (Case Study: Karaj Metropolis) Full text
2018
Mohammadyari, Fatemeh | Mirsanjari, Mir Mehrdad | Zarandian, Ardovan
Landscape fragmentation is the most important challenge in urban development. This challenge prevents the flow of materials and energy in the region. These changes affect ecological characteristics. In this regard, ecological networks are considered as tools for conservation planning. Therefore, satellite images were used in the years 2006, 2011 and 2017 to evaluate the ecological networks of Karaj Metropolis. The Classification and preparation of land map conducted based on land cover and with the support vector machine algorithm. Landmarks were also used to assess the status quo and the process of changing heterogeneity, continuity, and communication-isolation networks in previous years. The results showed that the trend of criteria changing in the study area is not desirable. The inappropriate process of changing of Space landscape heterogeneity criteria, the conjunction of the same spots across the land, and the optimal communication reduce the ecological function and the consequence is a decline in the sustainability of ecological networks. Also, due to the decreasing trend of metrics in green spots, especially human green, and the increasing trend of metrics in construction and open spots, in sum, it can be concluded that the ecological function and the ecological network characteristics of the landscape are following a descending trend.
Show more [+] Less [-]Environmental Development Planning of Shandiz District based on the Analytical Process Full text
2018
Jahani Shakib, Fatemeh | Hashemi, Nasim
One of the new problems is paying attention to environmental planning for sustainable exploitation of land resources and prevention of environmental issues that have been considered by researchers and managers recently. As much as this planning is based on objective facts and potentialities, achieving predetermined goals becomes more feasible. On the other hand, environmental planning tools have tended to achieve local-scale plans to reach more sustainable cities and townships. In this paper, local-scale development planning has investigated in Shandiz district located at Torghabeh-Shandiz city. The planning of the Shandiz district has carried out using the analytical process consisted of three stages of environmental planning and using the Geographic Information System (GIS). The first stage involves understanding the capabilities and potentials of the study area through the study of the current status. Issues, facilities, and constraints associating to each section are categorized and prioritized in the second stage. The third step involves drawing a vision, organizing the general goals, and defining the objectives. Regard to the priority of the studied factors, it was proposed spatial solutions in environmental units. Finally, physical-spatial development plans were developed to guide the regional changes according to the natural and man-made constraints and potentials.
Show more [+] Less [-]Redefining the Role of Small- and Middle-Sized Cities in the Regional Development Process; Introducing a Spatial Based Applied Method (Case Study: Kurdistan Province) Full text
2018
Ghorbani, Ramin | Pourahmad, Ahmad | Hatami Nezhad, Hossein
Much quantitative research (and some qualitative cases) has been done on the role of small- and medium-sized cities in regional development. The present article is also in this line, but with a slight change in the structure of the breakdown in the approach to the subject and the analysis of the problem, and the multi-faceted analysis of the data using the Fuzzy Inference System. The purpose of this research, with regard to the title, is developmental-applicable and has a descriptive-analytical approach. The FIS application and increasing approach has four stages (in general): its Database and Fuzzification; the rules base; the engine; and the Defuzzification. In the glimpse (Knowledge Base), regional development indicators (10 indicators) and variables (more than 70 variables) in four pillars of regional development (economic, physical, infrastructure and human development) for the small- and middle-sized cities of Kurdistan province (9 cities of the city centers Except for Saravabad) were selected and mapped in 2006 and 2016, and then a detailed analysis of the process was performed on the data. The final result of this paper is that although fluctuations in the development of the inland region of the province have been observed, regional development changes (relying on economic indicators) have been consistent with changes in the urban hierarchy (demographic projections). Thus, with the decline of concentration and concentration in Sanandaj, we see an increase in the role of small- and middle-sized towns in the urban-regional development of the province.
Show more [+] Less [-]Spatial patterns analysis of urban growth in Iran metropolitan regions (Case study: Tehran, Mashhad, Isfahan, and Shiraz metropolitan regions) Full text
2018
Dadashpoor, Hashem | Salarian, Fardis
Residential and employment attractions urge the population to reside in regions with appropriate potentials for development. The metropolitan regions of Iran have been attractive centers for the population; this attractiveness resulted in some changes in different spatial patterns. The present research examines the effect of spatial-physical, and demographic variables on metropolitan regions of Iran in order to achieve suitable planning for future spatial development of Iran. The objective of the study is to analyze correlation, centralization, and uniformity of distribution and composition of spatial patterns of development in the metropolitan regions. To do this, Shannon entropy, spatial Gini coefficient, spatial density index, and Kriging Estimator were employed. The results showed a trend that dictates on a decrease in concentration in metropolitan regions, which has manifested in different spatial patterns. In Tehran metropolitan region, the trend of development goes into polycentric with sprawl in the peri-urban and rural area. According to the development trend of population centers in Tehran, it can be said that at the same time of concentrated centralization, other settlements have played an effective role in the spatial structure of this metropolitan area, and strong road network has led to the formation of such pattern. In Isfahan metropolitan region, the spatial structure has changed into concentration. This has happened with an unbalanced distribution to a radial pattern. While Mashhad metropolitan region has a monocentric linear pattern, Shiraz shows a monocentric and sprawl in the periphery. This can be attributed to the small growth of settlements compared to the metropolis.
Show more [+] Less [-]Investigating the Relationship between the Spreading of Human Settlements and Instability of Agricultural Water resources in the Zayandeh-Rud Basin Full text
2018
Rahmani Fazli, Abdolreza | Salehian, Saeid
The Zayandeh-Rud Basin, placed in the center of Iran, is one of the areas with water instability problems. In the last decade, the water resources of the basin have decreased. Thus, that part of the length of the river in the middle and downstream of the water flow has dried or temporarily turned off, and the allocation of agricultural water to the agricultural lands of these sectors has decreased significantly. In this study, ground-level land use changes were analyzed through Landsat satellite imagery analysis in 2000, and 2014. These periods coincided with the periods before and after the occurrence of the instability of water resources in the basin. The researchers specified the research area and then divided it into three parts, naming upper, middle, and downstream. At the next step, these parts were compared in the form of 6 categories of use. According to the results, during the period, along with the occurrence of water resource instability, construction and residential land use across the rangelands has increased, and land use of pasture has decreased. Agricultural coverage has increased in the upstream, but it has decreased in the middle and lower parts. Besides, the empty and blank land use on the upstream has decreased, and it has increased in the lower parts. Regarding the results, some of the instability of agricultural water resources in the basin could be attributed to the expansion of settlements, increase in water consumption throughout the area, and increase in agricultural activities in the upstream basin.
Show more [+] Less [-]Assessing Tourism Attractions of Gharahsoo Watershed Based on the Impact and Effectiveness of Environmental Criteria Full text
2018
Ahmadi Mirghaed, Fazlolah | Mohammadzadeh, Marjan | Salmanmahiny, Abdolrassoul | Mirkarimi, Seyed Hamed
Identifying tourism attractions is a basic requirement in the local and national community toward balanced and harmonious development of land potential. This study aimed to evaluate the tourism attractions of Gharahsoo watershed in Golestan province, northeast of Iran, based on the impact and effectiveness of environmental criteria. After determination of criteria and preparation of layers, criteria analysis was done based on the impacts and effectiveness of the criteria using DEMATEL method. Entropy Shannon method was used for weighting criteria. Finally, the spatial analysis was done by employing the TOPSIS method. The results showed that landform and plant density, in terms of the impact, and access to facilities, in terms of the effectiveness, have priority over the other criteria. Also, the criteria weighting results showed that the criteria access to facilities, landform and plant density with the value 0.229, 0.147 and 0.123 are a priority to the other criteria, respectively. Finally, the results showed that, in terms of tourism attractions, the areas of the southern of Gharahsoo watershed are in suitable conditions and the rest of the area, especially the northern parts, has unsuitable conditions.
Show more [+] Less [-]Scenario Development in Realizability Territorial Spatial Arrangement (Case Study: Khorasan-e-Razavi) Full text
2018
Mousavi, Mir Najaf | Ghaderi, Reza | Taghilo, Ali Akbar | Kahaki, Fatemehsadat
Future studies in Territorial planning focus on finding key factors, drivers and uncertainties in the development of regions in the planning space. This is in the way that the planner can map and manage a desirable future by having them as a control lever. The purpose of this study is to identify the effective factors on the planning of Khorasan-e- Razavi province, to identify the key variables of the province's development and finally to develop effective scenarios for the province's planning. The research process is practical in terms of purpose, and the research method is descriptive-analytic. The nature of the data is qualitative. The data are collected through survey and from documents and records. Data analysis is based on futures research techniques including environmental scanning, structural analysis, and cross-impact analysis. The results of the research show that among the developed scenarios, province planning will face 22 strong adaptive scenarios, 2740 weak adaptive scenarios, and 1837 inconsistent scenarios, in the future. Of the 22 possible scenarios, eight scenarios have a favorable status, two scenarios have interstitial status, and 12 scenarios are in an unfavorable situation. Between the favorable scenarios, Scenario 1 is the best and the most likely scenario ahead of the province and all of its possible probabilities are quite desirable.
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