Research Paper
Geomorphology
sayyad asghari; shiva safari; elham mollanouri
Abstract
Land displacement is known as one of the most obvious invisible effects of natural earthquake hazards. In the present study, the radar interferometric technique (SBAS) using the images of Sentinel 1 (2018 to 2021) was used to estimate the land subsidence, and the Landsat 8 image of 2018 was used to extract ...
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Land displacement is known as one of the most obvious invisible effects of natural earthquake hazards. In the present study, the radar interferometric technique (SBAS) using the images of Sentinel 1 (2018 to 2021) was used to estimate the land subsidence, and the Landsat 8 image of 2018 was used to extract the land use classes in a part of the Sarab county. Also, the data obtained from the regional water organization has been used to investigate the condition of underground water in connection with the subsidence caused by displacement. According to the findings and survey of the land use map of the study area, the subsidence can be seen in different places and it reaches 9 cm per year around the agricultural areas and pastures. Also, in some places, the rising rate is estimated up to 12 cm. Examining the condition of aquifers shows a drop in the level of underground water in most stations, especially a sudden drop since the beginning of 2018. Considering that the direct relationship between groundwater withdrawal and subsidence has been fully proven; But after the 5.9 magnitude earthquake in November 2018, sudden changes have occurred in the subsidence of the region. Therefore, it seems that the subsidence of the region is more affected by the earthquake.
Research Paper
Urban Planning
Mostafa Amirfakhrian; samane bagherzade
Abstract
The purpose of this study is the sociability of public spaces in District 1 of Mashhad, and it seeks to show how the quality of people's presence in these spaces has changed as a result of the spread of Corona. The study is descriptive-analytical and the research variables are based on a conceptual model ...
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The purpose of this study is the sociability of public spaces in District 1 of Mashhad, and it seeks to show how the quality of people's presence in these spaces has changed as a result of the spread of Corona. The study is descriptive-analytical and the research variables are based on a conceptual model including 4 components of attendance, security, public health and public space management in the form of 55 variables. The scale of the study also includes all public spaces in Region 1. For this purpose, using Cochran's formula, 356 questionnaires were completed from the attendees in the public space. After entering the Spss software, the collected data were evaluated by inferential tests such as "one-sample t-test", "two-sample independent t-test", "paired" and "correlation test". took By combining information through logical methods, the story of the sociability of public spaces in the format of "4 curtains" was set according to the characteristics of acquired background (education and marriage) and non-acquired background (age and gender) of users. The first act of the story" showed higher stress and unwillingness of participation of men compared to women in public space. The "second curtain" indicated that married people have stronger motivations and desire to interact more with others compared to single people. "The third act of the story" showed the decrease in attendance, unwillingness to work together in the public space, and a feeling of insecurity among literate people compared to people with a lower level of literacy, and the "fourth act" also showed the trend towards virtual space. , confirmed the lack of need for street lighting, reduced presence and understanding of strangers among older people. Additional findings indicate the effective role of public vaccination in improving the sense of presence of residents in the public space after the outbreak of Corona.
Research Paper
Geomorphology
mojgan entezari; shokoh Esteki; Hamide Gholamhaydari
Abstract
A major cause of landslide and relevant losses and fatalities is inappropriate land management, especially in mountainous areas and valleys. In this study, risk-vulnerability superimposed model was used to investigate the probability of occurrence of fatal landslides in Tarom Watershed. The risk-vulnerability ...
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A major cause of landslide and relevant losses and fatalities is inappropriate land management, especially in mountainous areas and valleys. In this study, risk-vulnerability superimposed model was used to investigate the probability of occurrence of fatal landslides in Tarom Watershed. The risk-vulnerability superimposed model has been formulated to evaluate the landslide risk and vulnerability. These factors include topography, geology, number of streams, rainfall, frequency of faults, land use, density of roads, population density, and construction density, which were considered and analyzed in the present model. According to the model output (i.e., risk-vulnerability map), it was figured out that the eastern and northeastern parts of Tarom Watershed are exposed to highest levels of risk and vulnerability. That is, occurrence of a fatal landslide with financial losses is more probable in these areas, as compared to other parts of the watershed. Results of the present research showed that 17%, 35%, 23%, 16%, and 9% of the entire watershed area were classified as being exposed to very low, low, moderate, high, and very high risk-vulnerability levels, respectively. Advantage and superiority of this model over other models and methodologies for landslide study is simultaneous consideration of landslide occurrence risk and vulnerability of the study area to the landslide, making it capable of determining the areas of higher probability of fatal landslides with financial losses.
Research Paper
Urban Planning
Maryam azadbakht; Mojtaba Jahanifar
Abstract
The alienation feeling is a kind of mental state arising from the city in which the citizens feel a sense of separation and lack of belonging towards themselves and the city social, physical, cultural and historical environments. Urban spaces make citizens feel alienated. This research was done with ...
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The alienation feeling is a kind of mental state arising from the city in which the citizens feel a sense of separation and lack of belonging towards themselves and the city social, physical, cultural and historical environments. Urban spaces make citizens feel alienated. This research was done with the aim of presenting a conceptual model to explain the causal, background and intervention conditions that affect the urban space alienation feeling. In this mixed method research in the qualitative stage, interviews were conducted with 32 Ahvaz citizens until theoretical saturation, and by the theme analyze, a conceptual model was presented to explain and how the conditions affect the alienation feeling. In the quantitative stage, with the structural equation modeling, the alienation feeling causal structure was investigated for 310 Ahvaz citizens who were randomly selected in a stratified manner. Qualitative findings showed that city space ineffectiveness, insecurity, lack of city vibrancy, poor quality of city structures, city inaccessibility and unviability are the most important causes of the alienation feeling. The gender, family, ethnicity and culture of the people are also the background conditions. Inaccessibility has the greatest effect with a causal path coefficient of 0.65, followed by urban space insecurity with a coefficient of 0.60. The unviability of the city with a causal path coefficient of 0.51 had the least impact on the feeling of alienation in the urban space of Ahvaz. The feeling of alienation in urban spaces is strongly affected by interventions such as policy and legislation, urban designs, and gender segregation. The optimal and intelligent design of cities, taking into account individual and gender differences, ethnic and cultural symbols, and of course the security and accessibility of the city, provides the possibility that citizens feel less alienated from the urban space and their residence place.
Research Paper
Urban Planning
Seyyedeh Freya Aghayari; rasoul samadzadeh; mohammadtagi masoomi
Abstract
Many cities are exposed to natural hazards such as earthquakes. One of the important goals of urban planning is to reduce the vulnerability and make cities resilient against earthquakes, and the first step to realize this goal is to recognize and assess the vulnerability of Khalkhal city to a possible ...
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Many cities are exposed to natural hazards such as earthquakes. One of the important goals of urban planning is to reduce the vulnerability and make cities resilient against earthquakes, and the first step to realize this goal is to recognize and assess the vulnerability of Khalkhal city to a possible earthquake. The main goal of this research is to assess the vulnerability of earthquake hazards with a resilience approach in Khalkhal city.The current research is descriptive-analytical in terms of method and applied research in terms of nature. In this research, first through library studies, factors affecting resilience were identified and after preparing the research conceptual model, a questionnaire was designed in order to achieve the desired goal. Determining its statistical sample size was done using the Cochran method and the sampling method was done using the simple random method. To measure resilience, 380 citizens and 15 experts were selected as the sample size of the research among the households living in Khalkhal city. After collecting data and field information, SPSS software was used for data analysis and for drawing maps and zoning in ARCGIS software.According to the output of SPSS in the form of a GIS map, it can be said that the central part of Khalkhal city is in low resilience and is prone to earthquakes, and many parts of Khalkhal city are in medium resilience and few parts of the city are in The state of resilience is very unfavorable; Also, according to the single-sample parametric test, the results of the research show that in the implementation of urban resilience, social, physical, economic and institutional criteria are ranked first to fourth in the resilience of Khalkhal city, and they have an effective role on the efficiency of urban resilience in this city.
Research Paper
Geotourism
Maryam Bayati Khatibi; Nasrin Ghadimian
Abstract
Tabriz city in East Azarbaijan province also has a high potential in terms of having natural attractions and suitable climatic conditions. In this research, in order to evaluate the suitability of a suitable ecotourism location using the Analytical Hierarchy Process (AHP) and using the method (OWa) and ...
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Tabriz city in East Azarbaijan province also has a high potential in terms of having natural attractions and suitable climatic conditions. In this research, in order to evaluate the suitability of a suitable ecotourism location using the Analytical Hierarchy Process (AHP) and using the method (OWa) and Geographical Information System (GIS) were first examined according to the situation of the study area and the opinions of nature tourism experts and the evaluation of effective options in evaluating the spatial suitability of ecotourism development and all the options were converted into information layers and finally Using the AHP FUZZY technique with the OWA method in the GIS environment with the combination of 16 layers of information, the spatial compatibility map of the ecotourism development of the study area was prepared. Based on the results obtained from the spatial suitability map of ecotourism development in the study area, 52493.8 hectares or in other words 23.48% of the area is at a very favorable level, 50017.8 hectares or 22.38% of the study area is favorable and 1 51709/ or in other words 23/13 is at the average level. Also, the results of this research showed that the most unsuitable areas for the development of ecotourism include 24659.3 or in other words 11.03% of the entire area. The central region of Tabriz has a high potential for ecotourism. This area is in a very favorable condition in terms of research criteria. Thus, in terms of the most important criteria, i.e. distance from natural landscapes, distance from historical, religious and ancient attractions, and distance from facilities and services, due to its proximity to neighboring cities, including Tabriz itself, as the capital of the province, it has a good status compared to other parts of Tabriz city.
Research Paper
Urban Planning
amir pourdadash; akbar Asghari Zamani; Iraj Teymuri
Abstract
Considering the challenges ahead in the way and type of management of free zones, including non-democratic management structure, unstable income, achieve a bright future for the Aras Free Zone, it is necessary to identify and outline the key drivers. The current research, with the perspective of future ...
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Considering the challenges ahead in the way and type of management of free zones, including non-democratic management structure, unstable income, achieve a bright future for the Aras Free Zone, it is necessary to identify and outline the key drivers. The current research, with the perspective of future research, tries to identify the vital factors affecting the state of good governance in Aras Free Zone and investigate the effect of these factors on each other. This research, in terms of practical purpose and from library methods, survey, its nature is based on new methods in future research with an analytical and exploratory approach, using quantitative and qualitative models and analysis methods and structural cross-effects, such as Micmac and Delphi method. has benefited Based on this, during numerous discussion sessions and opinion gathering of experts and expert group of Aras Free Zone, 15 people as a statistical sample of the target population, 60 items or variables were identified in the form of 8 main indicators of good urban governance. Then, the above variables were weighted in the form of a 60x60 matrix of cross-effects by the elite group and defined in the Mic Mac software. What can be understood from the state of the dispersion map of the variables is the instability of the system. Therefore, according to the ranking of the direct and indirect effects of the variables and their scoring, the number of 21 variables that had more weight in both cases were identified as the main drivers of good urban governance in the free zone. Among the variables, citizens' and officials' trust in each other has the highest score and the most vital factor affecting good urban governance in Aras Free Zone, and administrators' adherence to the law, strategic vision, and social justice are ranked in the next ranks.
Research Paper
Rural Planning
Mohsen Aghayari Hir; Hossein Asgharpur; soheyla bakhtar
Abstract
Food safety and health have become a crisis due to the inappropriate and indiscriminate use of Chemical inputs. Considering the importance of the subject, the present research was conducted with the aim of analyzing and identifying the most important factors affecting food security, with an emphasis ...
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Food safety and health have become a crisis due to the inappropriate and indiscriminate use of Chemical inputs. Considering the importance of the subject, the present research was conducted with the aim of analyzing and identifying the most important factors affecting food security, with an emphasis on organic agriculture in Tabriz County. This research is based on a mixed approach and on practical purposes. The statistical population of this research is the expert agricultural jihad of Tabriz County. In terms of collecting information, it was done in two forms: library and field, using semi-structured interviews. The statistical sample was initially conducted using targeted sampling and then using the snowball method with 16 people until theoretical saturation was reached. Qualitative data analysis was done using the six-step theme model. MAXQDA software was used to code the interviews. The reliability of the interview was checked using the retest method (within the subject). Acceptability and verifiability methods were used to measure validity. The results of the qualitative section included eight main themes, 28 sub-themes, and 62 optional themes. Acceptability and verifiability methods were used to measure validity. The results of the qualitative section included eight main themes, 28 sub-themes, and 62 optional themes. The quantitative part of the research was conducted based on the results of the qualitative part, and a questionnaire was prepared based on 62 selective themes. And in the form of a census, it was provided to 95 people who were directly and indirectly related to the cultivation of crops. To analyze the data from the questionnaire, Structural Equation Modeling with Smart PLS3 software were used. The results showed that the policy dimensions of organic agriculture, economics, health, quality, and standard of living, optimization of production, access, and environment had the greatest impact on food security, respectively.
Research Paper
Urban Planning
samaneh jalilisadrabad
Abstract
The ability to attract people by public spaces has caused these spaces to be called as a container for the formation of social capital. also, the two-way connection of urban public spaces and social interactions is undeniable, and it should be said that public spaces have led to the formation of social ...
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The ability to attract people by public spaces has caused these spaces to be called as a container for the formation of social capital. also, the two-way connection of urban public spaces and social interactions is undeniable, and it should be said that public spaces have led to the formation of social interactions and the existence of social interactions makes public spaces successful, This raises the importance of successful public spaces.The research method employed an applied-descriptive method and a survey research technique. The data collection method was documentary and field studies that in which concepts related to urban spaces and social interactions were investigated and the effective factors on promoting social interactions in public spaces are classified in 4 dimensions of performance and activity, physical-spatial, environmental and semantic qualities and in 12 components and 60 indicators.these indicators were specificed according to the case study and after that, 10 key drivers have been identified with the Delphi technique and cross-impact analysis method in MICMAC software.the key drivers are:playground and leisure place for children, entertainment and leisure complexes, sitting spaces, the presence of people in different age and gender groups and categories,including women, children, the elderly and disabled people, and the level of response to their presence, suitable furniture for sitting and talking, access to walking and cycling paths, different landuses and activities 24 hours a day, memorable experiences, access to pedestrian facilities and furniture, Attention to the climate of the place of rest and comfort. after that, the 5 categories of public spaces in District 10 are scored according to the Likert method. It can be concluded that despite the existing quantitative and qualitative deficiencies,but the community parks and district parks have a better situation in terms of promoting social interactions than other urban spaces in District 10 of Tehran Municipality.
Research Paper
Urban Planning
Mousa Kamanroudi Kojouri; kamal rasouli; esmail isazade
Abstract
The excessive increase of cities and their uneven growth due to natural population growth and excessive migrations is one of the fundamental problems of our country's urban network. Cities grow differently, including internal or endogenous development, connected or continuous urban development, and detached ...
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The excessive increase of cities and their uneven growth due to natural population growth and excessive migrations is one of the fundamental problems of our country's urban network. Cities grow differently, including internal or endogenous development, connected or continuous urban development, and detached urban development. However, the issue of importance is how physical growth and development are formed and the extent and manner of expansion of cities, which has brought various economic-social and primarily environmental consequences. The purpose of this research is to investigate and analyze the factors affecting the physical development of Piranshahr City and its environmental consequences for the future development of the city and to control and guide its determining factors and forces. To analyze the data from factor analysis methods, multivariate regression analysis (using SPSS software), as well as the use of Landsat 8 satellite images and the Crosstab model in the years 1365 to 1395 in two fifteen-year periods for the city of Piranshahr, and with The use of satellite image processing techniques and geographic information system have been evaluated and analyzed. The results of this article showed that the built area of Piranshahr city has increased from 144 hectares in 1365 to 958.77 hectares in 1395, which indicates a physical expansion of 6.5 times for this city, which is the result of population increase (natural growth - migration) and change of land use (agriculture, orchards, barren lands) to urban built lands.
Research Paper
Geotourism
Hossain Hamedpour Darabi; Marzieh Rezaei; Mohammad Akbarian
Abstract
Population increase, urban sprawl and marginalization, demands entertainment, sightseeing, and the use of recreation spaces around cities. Afforestation canopy within the vicinity, in addition to the environmental benefits, can also meet part of the city dweller’s recreation needs. Therefore, the ...
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Population increase, urban sprawl and marginalization, demands entertainment, sightseeing, and the use of recreation spaces around cities. Afforestation canopy within the vicinity, in addition to the environmental benefits, can also meet part of the city dweller’s recreation needs. Therefore, the present study tries to identify the criteria and indicators for the designing of forest landscapes in the Southern Iran’s Sahara-Sindhi habitat and introduce them for ecotourism use. This research is based on reviewing previous research, questionnaires and using the Delphi method. Said questionnaires contain the following criteria: ecology, economics, social and infrastructure, that was compiled by the researchers and presented to a group of 15 respondents. Ecology’s criteria, with four sub-criteria and 25 indicators; Economics criteria, with two sub-criteria and 10 indicators; Social’s criterion with two sub-criteria and nine indicators and Infrastructure criterion with two sub-criteria and 27 indicators. Applying opinions from our panel of experts and calculating average scores, four criteria, 9 sub-criteria and 62 indicators were identified as " ecotourism-based afforestation designing for Southern Iran’s Sahara-Sindhi habitat". The results show that social, economic, ecological and infrastructural criteria are prioritized with scores of 35.1,35.0, 33.1 and 30.1, respectively. Based on the slight difference in social and economic criteria, it can be said that in designing such ecotourism destinations, local awareness, well-being, income, livelihood of local communities, efficiency of ecotourism and investment in the region are the most important aspects and should be prioritized, considering that the represented criteria all have very little difference in scores. Therefore, we could announce that all mentioned criteria are important and according to the respondents, they should be taken into consideration for afforestation designing.
Research Paper
Geomorphology
Fariba Karami; majid ranjbari
Abstract
The rivers are the most important supplies of fresh and agricultural water in the cities and villages. The importance of chemical quality of waters is becoming increasingly important due to the increase and diversity of Anthropogenic activities in the urban and rural environments. Therefore, the current ...
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The rivers are the most important supplies of fresh and agricultural water in the cities and villages. The importance of chemical quality of waters is becoming increasingly important due to the increase and diversity of Anthropogenic activities in the urban and rural environments. Therefore, the current study aimed to investigate the trend of land use changes and the chemical quality of surface water in a period of twenty years in the Qaranquchai River in Hashtrud Ccounty. The Qaranquchai is one of the sub-basins of Qezel Ozen River in the northwest of the country. In this research, Land use maps for the years 2021 and 2001 were prepared and drawn using Sentinel 2 and Landsat 7 satellite images, and were examined their changes. The chemical quality data of surface water in the hydrometric stations of the Qaranquchai basin, including Mg, Ca, EC, TDS, Cl, HCO, SO4, K and Na were obtained from the Regional Water Organization of East Azarbaijan province from 2000 to 2020. Then, their changes over 20 years were analyzed using the Mann-Kendall test. The results of the analysis of land use changes showed that in 2001, the largest area of land use was pasture, while in 2021, rainfed land had the largest area in the Qaranquchai basin. In fact, during the studied years, with the increase of rainfed agricultural land from 38% to 53.1%, pasture land decreased from 60.17% to 42.3%. The results of the investigation of the changes of the chemical quality indicators of the water in the hydrometric stations in the Qarangochai river in the studied time period, showed that the trend of changes was increasing. The result of the increasing process of each of the anions and cations in the river water has caused its quality to decrease.
Research Paper
Climatology
Hassan Zareh; Saeed Movahedi; Dariush Rahimi
Abstract
Reduction in productivity of horticultural and agricultural products, increase in pests, reduction in quality of agricultural products, and threat to food security are the consequences of climate change. The impact of climate change on agriculture leads to an increase in risk and risk-taking in the field ...
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Reduction in productivity of horticultural and agricultural products, increase in pests, reduction in quality of agricultural products, and threat to food security are the consequences of climate change. The impact of climate change on agriculture leads to an increase in risk and risk-taking in the field of agricultural activities. The results of the observational data review confirm the occurrence of climate change. The annual temperature anomaly of Bushehr province indicated an increase in the frequency of years with temperatures above the average from 1996 to 2021. According to the Pettitt's test, this increase is about 1.2 c˙. In addition, the significant increase in temperature at the 95% confidence level and Z values ≥ 2(in Mann-Kendall test) confirmed the occurrence of climate change in Bushehr province. The estimated data of the model for the future period confirm the continuation of the increasing trend of olive temperature thresholds for the period (2014-2040). The findings of the research indicated that with the increase in temperature for at least the following 20 years, the olive tree's cooling needs will not be met and the flowering season will occur in March instead of April. In the future, more areas will have an annual temperature of more than 26 °C. Therefore, in the future, the olive growing period will increase from 90 days to 150 days. With the increase in the number of days with temperatures above 40°C, the fruit burns more and the quality of olives decreases. Therefore, in addition to Asalouye and Dashtestan counties (1994-2019), Kangan, Jam, Deir and Dashti counties, the northern foothills of the province, and parts of Dilam (2017-2040) are added to the unsuitable olive areas. The favorable areas for olive cultivation will be moved to the west of the province.
Research Paper
Urban Planning
sharare saidpour; Freydon Babaei Aghdam; Iraj Teymuri
Abstract
Today, worn-out and inefficient textures are a major part from urban contexts and they have problems and specific structural and functional barriers which need to be examined importance-performance the urban regeneration indicators regarding the regeneration of inefficient textures. In this context, ...
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Today, worn-out and inefficient textures are a major part from urban contexts and they have problems and specific structural and functional barriers which need to be examined importance-performance the urban regeneration indicators regarding the regeneration of inefficient textures. In this context, the present research has been done with the aim of assessment of importance-performance the urban regeneration indicators based on damages from inefficient urban texture of Saqqez city which has been identified the highest level of risk from injuries resulting from inefficient texture and it has also been assessment of importance-performance the Indicators.The current type of research is applied in terms of purpose and has been descriptive-analytical in terms of data collection and the field-library method has been used to collect information. In this researchFMEA has been used of the infrastructure in the first stage to identify the damages from inefficient urban texture from Saqqez and specifying the risk priority number and determining operators and the IPAmodel has been used to assessment of importance-performance the indicators in the city of Saqqez in the next step. The investigations have shown in the FMEAmethod of the31risks raised in the10potential; 6potential effects have a high risk level (first stage; vulnerability to earthquakes, financial inability, managerial weakness and next stage;, increase in social abnormality, decrease in belongingness and increase in pollution) and the results of the IPAmodel have shown that there was no compatibility between the importance-performance the regeneration indicators of Saqqez and it is necessary to and it is necessary to be the first priority The Pay attention to the indicators of integrated urban management, organizing narrow roads, and access to main streets, compatibility of users, Supervision of construction and control of buildings, employment and income, investment in the neighborhood, improve participation and improving belonging to reduce the damage of inefficient textures.
Research Paper
Urban Planning
hamid saberi; Hajar Nasehi; mehdi alizadeh
Abstract
As a fundamental element in man-made environments, especially in urban spaces, urban visual appearance significantly impacts psychological and social functions. This research aims to explain the role of the visual image in the behavior of District 8 of Isfahan City citizens with an approach in terms ...
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As a fundamental element in man-made environments, especially in urban spaces, urban visual appearance significantly impacts psychological and social functions. This research aims to explain the role of the visual image in the behavior of District 8 of Isfahan City citizens with an approach in terms of developmental-applicative goal and descriptive-analytical research methodology based on library and field studies. The statistical population is all people over 15 years of age living in this area (239,756 people), which was analyzed using Cochran's formula of 204 samples. A researcher-made questionnaire was used to collect information. To achieve the goal indicators (lighting, color, readability, skyline, smell and sound, orientation, urban furniture, social security, sense of place, vitality, mental image, spatial attitude, and social participation) using the theoretical foundations of extraction became. For data analysis, one-sample T-tests, multiple regression, and the structural equation model were used for path analysis. The findings from the results of the investigation of the effect of visual appearance on the behavior of citizens showed; The readability index is the first and the orientation index is the second. Finally, the results show that the visual appearance of the city in the urban context of the 8th district of Isfahan has a significant effect on the behavior of the citizens of this region according to all dimensions, components, and indicators, and according to the intermingling of the components and indicators of the concept of appearance. Visually, its role in various aspects of citizens' behavior and the emergence of moral and humanitarian crises is undeniable.
Research Paper
Climatology
Atefeh Hoseini Sadr; bromand salahi; Gholam Hasan Mohammadi
Abstract
The aim of this study is to investigate the long-term fluctuations and trend in horizontal visibility in the northwest of Iran. For this purpose, hourly horizontal visibility data from 7 synoptic stations were used for the period of 1951-2020. The Koschmieder approach was used to calculate the extinction ...
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The aim of this study is to investigate the long-term fluctuations and trend in horizontal visibility in the northwest of Iran. For this purpose, hourly horizontal visibility data from 7 synoptic stations were used for the period of 1951-2020. The Koschmieder approach was used to calculate the extinction coefficient. Moreover, the Mann-Kendall and Rdit tests were applied to examine the trend of horizontal visibility. Also, the percentages of very good visibility (>19 km) compared with bad (<10 km) visibilities. Based on the results the annual average of horizontal visibility in northwest of Iran is ~13 km. This study showed three different fluctuation periods in the regional average of horizontal visibility: the first period (1951-1985) showed a sharp decrease in the visibility, the second period (1987-2005) was characterized by a low and stable visibility, and the third period showed a recent relative improvement. The regional average of horizontal visibility (extinction coefficient) exhibited a significant decreasing (increasing) trend of -0.167(0.0017) km per year at a confidence level of 0.01. The significant decreasing trend was confirmed in all stations except for the Ardabil station. The most severe decreasing trend was detected in Sanandaj and Zanjan stations with rates of 0.183 and 0.179 km year-1, respectively. The region-average of Rdit statistic in northwest Iran in the early 1950s was ~0.85, but it decreased to around 0.3 in the 1990s. Despite the recent improvement in horizontal visibility, reaching the reference distribution (i.e. Rdit=~0.5), the decreasing trend of horizontal visibility was still confirmed. The percentage of trend analysis of very good and bad visibility showed an increase in bad visibilities (from 5% to 25%) and a decrease in very good visibilities (from 80% to 5%), which confirms the decreasing trend in horizontal visibility. Hazy condition with 38.7% was the most influential weather phenomenon in visibility degradation.
Research Paper
Geotourism
Hossein Azizi; Mohammad Reza Rezaei; Hassan Oroji
Abstract
Tourism becomes the largest and most diverse industry in the world, which, as the main source of income and work, plays an important role in the economic growth of the countries of the world. Accidents and crises play the role of inhibiting the development of the industry. Epidemics are distinguished ...
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Tourism becomes the largest and most diverse industry in the world, which, as the main source of income and work, plays an important role in the economic growth of the countries of the world. Accidents and crises play the role of inhibiting the development of the industry. Epidemics are distinguished from other crises by the fact that they usually leave the local government. Resilience strategy for quick recovery of destinations affected by the crisis has been introduced. Therefore, it is necessary to conduct a research with the aim of investigating the role of resilience in the epidemic crisis in tourist cities. The present research method is analytical-descriptive in nature and it is a survey type by completing a questionnaire. At first, the path analysis model was used to determine the factors on the tourism resilience of the studied city (Shiraz) during the epidemic crisis. Therefore, according to the number of research criteria, the multiple regression test was implemented, which was directly considered first. The combination of resilience is determined as an independent variable on Shiraz as dependent changes. It is considered indirect in the next steps. In the stages of direct research, all research indicators have a significant effect on the dependent variable and there is a significant linear relationship between the independent variables and the dependent variable. The most direct effect is related to the social-cultural index and the most indirect effect is related to the economic index. In total, the social-cultural index has the highest correlation coefficient among the resilience indices, which indicates the most influential index on the epidemic crisis in Shiraz tourism. The economic index is on the second level. Finally, infrastructure and institutional-organizational indicators are placed in the next ranks with small distances.
Research Paper
All other Geographic fields of studies , Interdisciplinary
mohammad yousefi shatoori; Zakeyeh Aftabi
Abstract
Security, stability, development and health are on the agenda of all political systems, which have found a close, complementary and increasing relationship with water resources. Therefore, water supply is a special function of the government. Over the past century, the access of political-spatial units ...
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Security, stability, development and health are on the agenda of all political systems, which have found a close, complementary and increasing relationship with water resources. Therefore, water supply is a special function of the government. Over the past century, the access of political-spatial units and communities to limited sources of fresh water has been involved in many fundamental bottlenecks. In recent decades, Zayandeh Rood watershed has been involved in a series of problems with origins inside and outside the basin, which has resulted in the drying up of most of it, and has affected the security and development of the resident communities in the same proportion. The current article, which is useful, has explained the reflection of the water crisis on the hydropolitical scenarios of the Zayandeh Rood catchment area. The methodology governing descriptive-analytical research. The data required for the research has been collected by library and field method (interview-questionnaire) and analyzed using Micmac, Scenario Wizard and Shannon's entropy model software. The results of the research showed that out of 31 possible situations connected with seven scenarios with strong and likely compatibility, the situations that describe the hydropolitical scenarios of the Zayandeh Rood watershed as critical, which include the possible possible situations. . Therefore, the water crisis had a critical effect on the hydropolitical situation of the area upstream of the Zayandeh Rood catchment area, and the optimal management of water resources at the national level and in accordance with it at the level of the Zayandeh Rood catchment area became the most appropriate solution to prevent the occurrence of a critical situation in the Zayandeh Rood catchment area.
Research Paper
Geomorphology
masoomeh hadavand; mehran maghsoudi
Abstract
Off-road activity has increased significantly in different environments, especially arid regions and desert environments of the world, which can have negative effects on the ecosystem and different levels of desert landforms. This study is based on a qualitative, descriptive-analytical and quantitative ...
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Off-road activity has increased significantly in different environments, especially arid regions and desert environments of the world, which can have negative effects on the ecosystem and different levels of desert landforms. This study is based on a qualitative, descriptive-analytical and quantitative method that examines and monitors the trampling of landforms in desert areas and emphasises the need to protect the Lut Desert as a unique natural and cultural heritage against anthropogenic factors. This study was conducted at two levels. In the first level, the effects of off-road were studied and monitored in different years, and in the second level, the region wind and its relationship to the persistence of off-road effects on the land of desert forms were analyzed. This study was conducted in the northwestern region of Shahdad clots to Shoor river at a distance of three thousand meters from Shahdad-Nehbandan road. First, Aphrodite works were obtained in digital satellite images and then the density of Aphrodite works was obtained at certain intervals and compared on both sides of the road. During different years, these digitized works were examined and monitored. Based on the obtained results, it was found that the density of off-road effects has an increasing trend and shows that in recent years, off-road riding in the Lut desert has attracted more tourists. At a distance of three thousand meters from the road, the density of off-road effects is about 14%. And at a distance of two thousand meters 6%. And at a distance of three thousand meters 01%. The result shows that there is a direct relationship between the distance from the road and the off-road density.
Research Paper
All other Geographic fields of studies , Interdisciplinary
Negar Houshangi; hassan sajadzadeh; Mohammad Saeid Izadi
Abstract
Creating a context for a sense of belonging to a place and strengthening the practical criteria for increasing the quality of life in informal settlements adds to the necessity of evaluating this issue and recognizing the factors that strengthen it. In this regard, this research with analytical description ...
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Creating a context for a sense of belonging to a place and strengthening the practical criteria for increasing the quality of life in informal settlements adds to the necessity of evaluating this issue and recognizing the factors that strengthen it. In this regard, this research with analytical description and review methods of texts, sources, and visual documents in library studies and case research method, recognizes the factors involved in creating a sense of belonging in such settlements and also the effects of spatial configuration changes in enhancing the potential sense of belonging in Nakhodcher neighborhood of Rasht city. The quantitative results obtained from the distribution of 384 questionnaires have been analyzed by the structural model method. This method is used to investigate the effect of a significant relationship between the factors of sense of belonging in this neighborhood and it examines the correlation of variables, which is one of the prerequisites for doing regression. The research findings from the questionnaire show that there is a significant positive relationship between the effective factors in the formation of the sense of belonging, including perceptual-cognitive, environmental-physical, and socio-cultural factors; So that by increasing the parameters of spatial configuration such as the length of passages, interconnectedness, depth, connection, and selection, the quality of the sense of belonging factors mentioned above will also increase. Summarizing the conditions obtained by Depth map software and space layout indicators shows that the minimum value of the connection index in the network of passages of the fabric of the Nakhodcher neighborhood indicates the minimal permeability of the fabric and its organicity. To strengthen the dynamics of this area, the average depth of the entrances of the neighborhood should be kept to a minimum and different uses should be established in the vicinity of the main axis.
