Mahmoud Habibnejad Roshan; Kaka Shahedi; Sayed Hussein Roshun
Abstract
Introduction
Floods are one of the most destructive natural disasters that cause severe injuries and loss of life, major infrastructure damage, significant economic losses, and social unrest worldwide. Due to the fact that flood is a dynamic and multidimensional phenomenon, Geographic Information System ...
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Introduction
Floods are one of the most destructive natural disasters that cause severe injuries and loss of life, major infrastructure damage, significant economic losses, and social unrest worldwide. Due to the fact that flood is a dynamic and multidimensional phenomenon, Geographic Information System (GIS) and Remote Sensing (RS) data are used to a large extent to discover the extent of flooded areas and play a special role in preparing flood risk and susceptibility maps. Flood susceptibility mapping is essential for characterizing flood risk areas and planning flood control schemes.
Materials and methods
In this research, the identification of flooded areas in the Karun Watershed based on the Analytical Hierarchy Process (AHP) in the GIS environment and its validation with the NDWI blue index extracted from Landsat 8 satellite images has been considered. For this purpose, first, 15 effective parameters in floods occurrence including slope, aspect, elevation, curvature, rainfall, distance from stream, stream density, distance from fault, fault density, distance from road, road density, lithology, Curve Number (CN), land use, Topographic Wetness Index (TWI) and Stream Power Index (SPI) were selected and the weighting of these parameters was done based on AHP method in the Expert Choice software environment. Finally, by using the command to combine the layers based on the weighting of the AHP method in GIS, the final flood risk zoning map was obtained. NDWI water index was used to validate the flood risk map obtained.
Results and discussion
The results of the AHP model showed that the most effective factors in the occurrence of flood risk in the Karun Watershed include rainfall, the amount of slope and the height classes, which should be considered in order to reduce flood damage and provide management solutions for these factors. Also, the results show that the downstream areas of the watershed have the highest risk of flooding and more than half of the watershed's surface (52.24%) has a medium flood potential.
Conclusion
Preparing a map of flood-prone areas is one of the most constructive methods that enable the reduction of flood risk damages and help planners, stakeholders and decision-makers to properly monitor flood-prone areas and ensure appropriate and sustainable socio-economic development.
Aref Rasouli; Ghorban Vahabzadeh Kebria; Sayed Ramazan Musavi; Sayed Hussein Roshun
Abstract
Extended abstractIntroductionIncome-generating industrial tourism is economically viable, with social and cultural exchange, and at the same time contains the least environmental pollution. Geotourism was first used in the early 1990s to study a special place containing obvious geological and geomorphological ...
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Extended abstractIntroductionIncome-generating industrial tourism is economically viable, with social and cultural exchange, and at the same time contains the least environmental pollution. Geotourism was first used in the early 1990s to study a special place containing obvious geological and geomorphological phenomena. Today, the development of tourism around the world has attracted a lot of attention because tourism has become an industry that brings many benefits to both the host and the visitor. This industry has become the main source of income, employment, private sector growth and infrastructure development in many countries. The purpose of this study is to investigate the capabilities and capabilities of geotourism in Khatirkuh region located in Savadkuh city of Mazandaran province using the combined SWOT-ANP and QSPM analysis. Materials and methodsIn terms of the work steps, this research is descriptive-analytical. The method of data collection was library and survey type field studies (interviews and questionnaires) and the theoretical framework was also done using documentary method. In order to carry out the research, a questionnaire containing 83 questions was divided into four parts: economic, social, environmental and ecological and the ability of geotourism, and some questions related to suggestions and solutions are given at the end of the questionnaire. The designed questionnaire, after its reliability and validity test, was given to 71 local people, employees, experts and students, and each of the questions in the questionnaire were designed as four options based on a Likert scale. Then, using SWOT model, the strengths, weaknesses, threats and opportunities of the region in the field of geotourism were identified and prioritized and prioritized using the network analysis process method. Finally, geotourism development strategies were identified using SWOT-ANP. Results and discussionThe results showed that the total weighted scores of strengths (S) and weaknesses (W) were 2.881 and 2.549, respectively, and the total weighted scores of opportunities (O) and threats (T) were 2.922 and 2.39, respectively. Given that the total SO scores are higher than the WT, an appropriate strategy for geotourism development planning in the region would be an aggressive strategy. Also, based on the results of quantitative strategic planning method (QSPM), the prioritization of these strategies with total points of 29.283, 28.350, 27.744, 26.877 and 26.534 respectively include ST6, SO1, SO7, WO2 and WO1 strategies. Financial resources for developing the region's tourism infrastructure, investing in infrastructure, creating new jobs for indigenous peoples, investing well in cultural sectors, and educating indigenous peoples to connect with tourists were identified more than other strategies. ConclusionConsidering the priority of the proposed strategies for the region, it can be said that for the sustainable development of geotourism, incentives should be considered for the private sector of Khatirkoh region, because private investors are looking for more income by entering this industry, and this is their issue. makes it necessary to provide appropriate services. Unfortunately, there is not much incentive for the participation of the private sector in the tourism industry, especially in the field of geotourism in Iran and naturally in the Khatir-Kuh region. If the problems caused by not handing over to the private sector and infrastructure facilities are solved, we will witness a more sustainable development in the region.
