Geomorphology
shahram roostaei; Davod Mokhtari; Christineh Jananeh
Abstract
IntroductionSlope instabilities are one of the most distinctive types of geomorphic hazards that are exacerbated by human interference and threaten most of the human installations, especially mountainous highways and impose heavy costs on the government and local residents. Each year, slope instabilities ...
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IntroductionSlope instabilities are one of the most distinctive types of geomorphic hazards that are exacerbated by human interference and threaten most of the human installations, especially mountainous highways and impose heavy costs on the government and local residents. Each year, slope instabilities cause enormous economic damages to highway, railways, power transmission and communication lines, irrigation and watering canals, ore extraction, as well as oil and gas refining installations, infrastructures in cities, factories and industrial centers, dams, artificial and natural lakes, forests, pastures and natural resources, farms, residential areas and villages or threaten them. Nowadays, many instabilities are resulted by human intervention and manipulations. One of the effective human factors in instability occurrence is the construction of highway. Highway construction, especially in mountainous areas, increases the probability of occurrence of various types of instabilities, as it changes the natural balance of the slopes and causes deformations in the land. Each year, lots of casualties and financial losses are imposed by the occurrence of various types of instabilities in the slopes overlooking the highways, which also cause the destruction of many natural resources in the country. However, the construction of roads, highways and freeways is necessary and unavoidable in today’s life.The Tehran-North highway will be the route that connect the Iran’s capital Tehran with the southern shores of the Caspian Sea.Materials and methodsThis contribution aims to study slope instabilities along this highway using logistic regression method. In this regard, layers of 14 effective factors were identified, comprised of elevation classes, slope, aspect, geology, land use, precipitation, distance from fault, river and highway, normalized difference vegetation index (NDVI), climate, slope length (LS), stream power index (SPI) and topographic wetness index (TWI). Consequently, maps of the factors responsible for instabilities were prepared as separate layers in the GIS environment and transferred into the Idrisi software. The whole procedure included: (1) preparation of digital elevation model (DEM), river and fault layers based on the 1:25,000 topographic map of the area, as well as distance maps from rivers and faults, (2) creating slope and aspect maps from DEM, (3) preparation of land use and NDVI maps of the region based on unmatched classification of Landsat 8 image of OLI sensor, (4) preparation of geological map, (5) preparation of precipitation and climate layers based on the information obtained from the meteorological organization, (6) creating LS, SPI and TWI layers based on the DEM, (7) conversion of the distribution data of the regional instabilities using Landsat satellite and Google Earth images, (8) correlating the information layers with the regional instability map and calculating their density per unit area, and (9) performing the logistic regression model using Terrset software.Result and discussionResults obtained by applying logistic regression model showed that the most important factors affecting slope instabilities in the Tehran-Soleghan highway area are distance from fault and climate. 27.14% of the Soleghan highway area possesses medium to high potential for instabilities, within which 86.26% of the instabilities have occurred. Furthermore, 4.57% of the Soleghan highway area shows very high risk in terms of instability occurrence, encompassing 61% of the occurred instabilities. According to the prepared maps, the middle and southern parts and a small section in the north of the Tehran-Soleghan highway area have the highest potential for instability occurrence. The high value of the ROC index and its proximity to the end value of 1 indicates that instabilities strongly correlate with the probability values derived from the logistic regression model. Additionally, the assessment of the instability potential map by the SCAI index showed that there is a high correlation between the prepared risk maps and the occurred instabilities, which have been confirmed by field surveys. The obtained results are in a good agreement with the general opinion that SCAI decreases especially in high and very high risk classes and indicates a high correlation between the prepared risk maps and the occurred instabilities and field surveys in study areas.ConclusionFinally, it can be mentioned that the logistic regression model is suitable for preparing the zonation of the probability of instability occurrence along the edges of the studied highway. As a final conclusion, it can be concluded that in addition to natural factors, the- human-made factors and particularly unsystematic highway construction can play an important role in the instability occurrences on the slopes overlooking the highway and in order to reduce the relative risks and increase the stability of the slopes, it is necessary to avoid manipulating the ecosystem and changing the current land use as much as possible, in addition to policy making for constructions in accordance with geomorphological and geological features of the area.
Geomorphology
Masoumeh Rajabi; Shahram Roostaei; Mohsen Barzkar
Abstract
IntroductionThe concept of morphometry involves the measurement and numerical analysis of land surface, shape, dimensions and form of land. In relation to flooding, watershed morphometry includes quantitative indicators describing watershed physical characteristics that control the pattern and quantitative ...
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IntroductionThe concept of morphometry involves the measurement and numerical analysis of land surface, shape, dimensions and form of land. In relation to flooding, watershed morphometry includes quantitative indicators describing watershed physical characteristics that control the pattern and quantitative characteristics of floods such as amount, time of occurrence, delay time, and flow hydrograph. Unusual development of cities due to population growth and consequent land use change has caused disruption of hydrological balance and increased flooding of basins. The purpose of this study was to prioritize the sub-catchments of Zab River based on a novel combination of morphometric analysis and statistical correlation and zoning of flood potential under sub-catchments.Data and Methodto disregard for human and social sub-basins, which has a great impact on the hydrological processes of the catchment. Based on the validation results, the Shinabad and Sufian basins have the highest priority, and the new method of morphometric analysis and statistical correlation have considered them the highest priority for managers' attention.The elongation ratio helps to understand the hydrological characteristics of the drainage basin and ranges from 1 for circular basins to 0 for extended basins and its high values indicate the shape of the basin circle, high peak discharge and high flood potential. Is. The values of tensile strength in all sub basins are more than 0.5 and indicate high potential for flooding. Straller (1964) considers the circle ratio a quantitative measure for visualizing the shape of the basin. High values of this parameter indicate circular shape, high to medium ruggedness and low permeability in the basin, which causes peak discharge in less time. The ratio of the circular ratios under the Lavin Tea Basins is 0.17, Copar 0.19, and Zab Small 0.27, indicating relatively low flooding potential in this parameter. The amount of this parameter is 0.35 under Shinabad basin and 0.31 under Sufian basin which indicates their higher flood potential in this parameter (Table 7). The branching ratio is an important parameter affecting peak runoff hydrograph discharge with high values indicating high instantaneous discharge and flood event. The mountainous and steep areas have a split ratio of 3 to 4. Branching ratio values indicate low flooding potential except for Shinabad basin which shows this ratio of 6.19 and this ratio indicates high flood potential Results and DiscussionSince hydrological units are based on morphometric parameters to prioritize flood mapping, firstly, using channel networks and elevation curves, topographic maps of 1: 50000 and digital elevation data are analyzed. The boundaries of the hydrological units became. Then, because the catchment morphological parameters have different effects on soil erosion processes and runoff formation, prioritization of the sub-basins was done in a new way based on the difference of morphological parameters and statistical correlation analysis between them. Morphometric parameters were calculated for all sub-basins in GIS software. Then, statistical correlation of morphometric parameters was performed based on the t-Kendall method using SPSS software. Based on the correlation matrix we can analyze the relationship between the parameters and define the relative weight for each parameter without All twelve variables including circular elongation ratio, branching ratio, flow frequency, drainage density, drainage texture, compaction index, shape factor, mean slope, roughness ratio, roughness, and roughness number for all sub-basins are calculated in Table 2. The Kendall correlation coefficient was used to investigate the relationship between Validation results showed that the new method of morphometric analysis and statistical correlation did not perform well in prioritizing all sub-basins, but this method was accurate in identifying the most priority sub-basins (most acute conditions). The reason for this may be due to the lower performance of morphometric analysis and the characterization of waterways in low-slope catchments. Also, the precise reason for not estimating the priority of some sub-basins is due.ConclusionThe selected twelve parameters are directly related to runoff and flood potential. Therefore, high values of parameters have a direct relationship with runoff and flood potential due to their greater impact on the selected twelve parameters. Indicator (Cv) values for each sub-basin are obtained from averaging of 12 indices and accordingly sub-basins of Shinabad and Sufis with high flood potential, sub-basin with small potential and sub-basin zab basin. Copar and Lavin Tea have physiographic and morphometric characteristics of the sub-catchments have a great influence on flooding and hydrological behavior, it is possible to study the status and potential of flooding below the catchments. In this research, in order to potential of flooding, firstly, Zab sub-basins were prioritized based on the new method of morphometric analysis and statistical correlation. Based on this method, the results showed that the Shin abad and Sufi basins are the top priority for the implementation of management measures to ensure.
Geomorphology
Leila Khodaei Geshlag; shahram roostaei; Davod Mokhtari; Khalil Valizadeh Kamran
Abstract
Introduction Risk management and landslide assessment begin with a comprehensive identification and monitoring of their movements and mapping them, which can be used as a basis for achieving knowledge about their spatial and temporal distribution. The integrated vision of the radar remote sensing images ...
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Introduction Risk management and landslide assessment begin with a comprehensive identification and monitoring of their movements and mapping them, which can be used as a basis for achieving knowledge about their spatial and temporal distribution. The integrated vision of the radar remote sensing images has made them a powerful tool for preparing distribution maps, assessing the risk of landslides, and evaluating the instabilities reoccurring at various time intervals. Therefore, this study aimed to identify, monitor, and measure the extent to which the region is at the risk of slope instabilities in the period of 2009-2011 in the Ahar-Varzeghan region in the Ahar Chay heights using the Interferometry Synthetic Aperture Radar (InSAR) technique. Data and Method The studied area is a part of Ahar Chay watershed with an area of 1593 km2, which makes it the largest watershed in the East Azerbaijan province. The said area has an east longitude of 35´ 46° to 10´ 47° and north latitude of 20´ 38° to 45´ 38°. This area is located on northern slopes at an altitude of more than 2730 m, and in the Alpaut and Chaligh areas with an altitude of less than 1260 m. Various types of data were used in this research, including radar imagines, ENVISAT-ASAR, and data captured by Global Positioning System (GPS) in field research. Besides, topographic maps of 1.25000 associated with the country's land surveying organization and geological maps of 1:250000 related to the country's geological and mineral exploration organization were used to examine the area's geology and morphology. Besides, SAR scape ENVI4.8 and Arc/GIS software environments were used to prepare and process radar images, and provide the displacement maps associated with the landslides. INSAR is a remote sensing technique developed to study the earth's surface movements in the 1992 Landers, California earthquake. When this technique is adopted, two or more SAR images are used to generate a digital elevation model or prepare a map of the movements of the earth's surface. Also, this technique measures the phase difference between two different waves, and this phase difference is attributed to the change in the distance between the sensor and the earth target or the movements of the earth's surface. SAR images show the movements of the earth's surface in the direction of the satellite's line of sight. However, SAR images can be used in both ascending and descending modes, which enable them to measure the earth's surface movements in three directions: vertically, from the north, and east. The following steps must be taken to measure the movements of the earth's surface and/or develop a digital elevation model using the InSAR technique: SAR image formation: - Interferogram generation - Ambiguous phase extraction - Phase recovery in the generated interferogram - Elimination of the effect of the topographic phase on the interferogram - Displacement phase extraction Results and Discussion The InSAR technique has been used in this study to identify the range of slope instabilities and the rate of displacement of unstable landslides. Based on the research findings, radar images and differential interferometry processing methods could potentially identify unstable active areas and calculate the rate of displacement. In this study, the results of the ASAR radar image processing were used to calculate the rate of displacement from 2009 to 2011. Figure 9 showed the displacement rate for the period of 2006-2011. It should be noted that positive and negative numbers in this figure indicated the rate of upward and downward movements, respectively. According to this figure, the highest and lowest rates of downward movements were associated with 2009 and 2011, respectively. In other words, the rate of downward movements had decreased by 2011. However, the rate of upward movement in the region was the highest for the years 2009 and 2010. Also, the lowest rate of upward movement recorded for this area was in 2011. Conclusion The present study utilized the InSAR technique to identify the range of landslides and to estimate the displacement of unstable landslides. The results of this study showed that radar images and differential interferometry processing methods could potentially identify unstable active areas and calculate the rate of displacement. In this study, the results of the ASAR radar image processing were used to calculate the rate of displacement between 2009 and 2011. Then, the validity of the results of the InSAR technique was measured by adapting the displacement maps to field operations and Google Earth. According to the research findings, the highest rate of fall or downward movement occurred in approximately 8 cm in the southern areas. Moreover, the highest rate of elevation or upward movement occurred in about 5 cm in the east northern areas in 2009. The highest rate of falls in this year was associated with areas with old landslides, among which the villages of Depigh, Nasirabad, and around Sariaraghan were more affected than other areas. These instabilities in the village of Depigh were mostly located around the bed of the Ahar Chay river, in a way that severe landslides in this area caused enormous rocks to accumulate on the surface of the river bed.
Geomorphology
Masoumeh Rajabi; shahram roostaei; Mohsen Barzkar
Abstract
Introduction Rivers are one of the best geomorphic landscapes in which the connection between the system of forces and the forms of unevenness can be clearly understood (Chorley et al., 2000: 163). Various sites, especially sedimentology, are important. Zab River is one of the most water-rich rivers ...
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Introduction Rivers are one of the best geomorphic landscapes in which the connection between the system of forces and the forms of unevenness can be clearly understood (Chorley et al., 2000: 163). Various sites, especially sedimentology, are important. Zab River is one of the most water-rich rivers in the country, which due to the high discharge, causes a lot of damage annually due to floods on agricultural lands located in the river. This river, by changing its course in the bed and creating erosion along the bed, exposes the lands around the bed to destruction, and considering that the farmers of the region use the river water for agriculture, it is of great economic importance for them.Therefore, it is necessary to classify and determine the boundaries of the riverbed and thus understand the existing processes and morphological knowledge of it. Therefore, it is necessary to classify and determine the boundaries of the riverbed and, as a result, to understand the existing processes and its morphological knowledge. Data and Method River classification according to Rosegan method: Rosegan classification is divided into four levels: In this research, for the morphological classification of Zab river, first by scrolling along the study area, an almost uniform set of geomorphic units is identified. Then, using GPS in three paths upstream, middle and downstream of the study area were segmented. After intercepting the river route and then entering the required data into the WMS9.1 and HEC-RAS software environment and executing the hydrological model, the geometric properties of 24 transverse sections of the total sections in all intervals The studied route was extracted and all the parameters required for classification and geometry of the duct in those intervals were calculated. To determine the overflow discharge of the intervals, the discharge with different return periods obtained from the relationship between Fuller and smada software with The prepared sections were given to HEC-RAS software and then based on one of the methods to determine the full cross section (level at which the ratio of width to depth to depth in an orthogonal device is minimized) the overflow flow is determined Took. Accordingly, in each cross section of the curve, the ratio of width to depth of flow versus depth for each section was plotted and the minimum point on the curve was selected as the discharge of the full section. After determining this discharge in each transverse section, using frequency analysis, the full section discharge has been determined for the whole river. Finally, by introducing flow characteristics, geometric characteristics and manning coefficient of each section in HEC-RAS software, flow simulation was performed and data related to cross-sections and water surface profiles including width to depth ratio, indentation index Bed, cross-sectional area in overflow, overflow width, maximum depth, flood plain width and water level slope, etc. were calculated. The implementation steps of the HEC-RAS model are shown in Figure 2. Results and Discussion According to field and laboratory studies, Zab River is in the alluvial group in terms of classification based on the type of bed sediments (rocky and alluvial). In summer, due to dehydration, fine-grained sediments are placed on coarse-grained sediments, as a result of which sand particles get stuck between the sand particles and cause the bed to solidify. These sediments are sandy but in winter Due to the flood, fine particles are displaced along with the flood and large particles remain at the bottom of the bed, so the type of sediments on the bottom of the Zab River are sandy. To obtain the average size of duct material, 15 samples were taken along the river at different distances and granulated in the laboratory. Due to the fact that the intervals 4 in the upstream and 11 in the middle part of the studied route have a mixed bed of irregular rapids or erosion basins and the bed (profile) and sides are relatively stable and have a limited sediment transport system with type B Roses are compatible. Also, moderate roughness and narrow valleys with a gradual slope are other reasons for confirming this claim. Intervals 1, 2, 3, 4, 5 upstream, 10, 12, 13, 14 in the middle and 17, 20, 21, 22, 23, and 24 downstream of the studied route with respect to stability They and their sediment load and limited transport are Type C compliant. The predominant morphological feature of these areas is wide valleys with alluvial terraces associated with the flood plain, which are again the characteristics of this type. Section 18 is located in the downstream part of the studied route in type D, which is witnessed by the following reasons. The river is arterial in this area and rock fragments are rarely seen in the bed. The ducts also have erodible edges and high suction load. The morphological appearance of most areas has this type of wide valleys with alluvial and clovial cones. Interval 12 is located in the middle part of the studied route in type E. Here the ducts show significant sinusitis and the ratio of width to depth is low. The river is stable in this area and one of the reasons is the development in the floodplain with dense grass cover on the vertical shore of the duct. The predominant morphological feature of this section is the type of wide valleys with grasslands. Conclusion The characteristics of these intervals indicate their conformity with the Rosgen model. High instability of the riverbed in the range of intervals of types C and D is a threat to agricultural lands and surrounding structures. The results of evaluating the stability conditions of the intervals of the study area in the third level of Rozgan showed that in the upstream path of the study area, the intervals of 2, 5, and 8 intervals have more stable conditions at a good level than other intervals. Flow conditions in the intervals 1, 3, 6, 7 are at the intermediate level and in the interval 4 are at the weak level, which have more unstable conditions. In the intermediate path, the range 11 is better and more stable, and the 10, 12, 13, and 15 ranges are at the intermediate level, which is less stable. In the downstream direction, the studied areas are intervals 19, 21 and 22 at a good level and with more stable conditions, intervals 18, 20, 23 and 24 at a medium level and range 17 at a weak level and instability conditions. The results of Zab River evaluation based on Rozgan classification system at levels two and three showed that the canal patterns in Zab River and consequently the effective parameters in classifying and separating the canals are consistent with Rozgan system. However, there are differences in the values and parameters that are due to specific conditions of local influencing factors. However, the Rozgan system is responsible for the morphological knowledge of the Zab River and similar fluvial systems. کرد. Therefore, this model has the ability to quantitatively predict the geomorphism of the Zab River and rivers with similar conditions.
Geomorphology
shahram roostaei; christineh jananeh
Volume 23, Issue 70 , March 2020, , Pages 169-188
Abstract
Landslides and slope instabilities are among the important natural hazards, which cause human and financial casualties and loss of economic resources every year. These hazards mostly occur in natural slopes or those manipulated by human. Landslide hazard zonation is one of the methods by which, areas ...
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Landslides and slope instabilities are among the important natural hazards, which cause human and financial casualties and loss of economic resources every year. These hazards mostly occur in natural slopes or those manipulated by human. Landslide hazard zonation is one of the methods by which, areas prone to landslide occurrence can be determined and plannings can be done using the obtained zonation maps to reduce the casualties. The aim of this contribution is to study landslide hazard zonation within the Baleghluchai watershed in NW Iran. First, the main factors including the slope and its direction, geology, soil, climate, distance from the road and river and land usage were determined. The method of current investigation was Fuzzy AHP in the GIS environment, based on which, after preparing data layers using the above-mentioned parameters and giving weights to them in the GIS environment, the landslide potential map, as well as classification was carried out by Fuzzy AHP method. Results showed that the largest part of the watershed (32.21%) has low landslide potential, while about 13.5% of it has very high potential. Areas with very high and high landslide potential (327.39 km2 area) are mainly located in the northwest of the watershed, with some small areas distributed in the south and east, while areas with very low and low potential (504.06 km2) are mainly found in the central to northwestern and southern parts of the watershed.
Geomorphology
musa abedini; shahram roostaei; Mohammad Hossein Fathi
Volume 22, Issue 66 , January 2019, , Pages 187-205
Abstract
Diagnosis and classification of landslides is a critical need in the risk analysis before and after the disaster. And primarily through land surveying or traditional interpretation of images was done. In this paper to identify and classify types of object-oriented approach landslide has been paid. The ...
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Diagnosis and classification of landslides is a critical need in the risk analysis before and after the disaster. And primarily through land surveying or traditional interpretation of images was done. In this paper to identify and classify types of object-oriented approach landslide has been paid. The data used in this study consisted of false color images obtained from satellite data Resourcesat-1 with spatial resolution of 5.8 meters and digital elevation models with 2.5-meter resolution satellite image of 10 meters of Cartosat-1 was used. This method was used for the North West basin and then used without further reforms in the eastern part of the basin. A total of three sliding using this method accurately identified 71.11% and 91.4% classification accuracy has been detected. In this way, the landslide early detection of high accuracy and speed, hence has great potential to assist in risk analysis, disaster management and decision making process after the earthquake or heavy rainfall, can be used related entities, including crisis management headquarters, natural resources and watershed institutions.
Geomorphology
Somayeh Khaleghi; Shahram Roostayee; Ali Mohammad Khorshiddoost; Mohammad Hossein Rezaee Moghaddam; Mhammad ali Ghorbani
Abstract
Catchments and river systems altered in response to changes of internal and external factors. Hence, several techniques have been proposed to simulate these changes and Evolution of the river systems. Cellular Automaton is one of the newest river cellular models that define the catchment landscape with ...
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Catchments and river systems altered in response to changes of internal and external factors. Hence, several techniques have been proposed to simulate these changes and Evolution of the river systems. Cellular Automaton is one of the newest river cellular models that define the catchment landscape with a grid of cells, and development of this landscape is determined by the interactions between cells (for example fluxes of water and sediment) using rules based on simplifications of the governing physics.This method is used for simulation of Lighvan catchment with 20 m cell size and 10 years precipitation data (1380 to 89). Simulation results evaluated in two qualitative and quantitative methods, So that the relative changes in the catchment and spatial distribution of erosion and aggradation value in the entire catchment and each cell was identified on Digital Elevation Model map and also, values of different particle size distribution in different discharges showed that with the increasing discharge, and amounts of sediment increased and among this coarse sand have the highest value and very fine sand, clay and silt particles have the lowest value. Also investigation of longitudinal and latitude profile show that Lighvan river is in mature stage and Lighvan channel has been underwent aggradation due to climate changes and increasing catchment precipitation in last decade that causes hillslope erosion and channel aggradation. Finally, Since certainty of Cellular Automata results is difficult and CAESAR is sensitive to input parameters but comparing the results with previous investigation and field observation shows that Cellular Automata has acceptable results.
Geomorphology
Shahram Roustaei; hasan Ahmadzadeh; mohammadreza nikju; maryam dehgani
Abstract
Abstract To reduce vulnerability of some villages to natural hazards, shifting their location is inevitable. The rural relocation and resettlement is a plan to determine the optimum establishment and activity site for the study of villages by studying the causes of displacement, evaluating social and ...
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Abstract To reduce vulnerability of some villages to natural hazards, shifting their location is inevitable. The rural relocation and resettlement is a plan to determine the optimum establishment and activity site for the study of villages by studying the causes of displacement, evaluating social and economic characteristics of villagers and environmental and physical assessment are of options for a new location. Googerd village due to its vulnerability to landslides was studied which several times was displaced and finally a place is specified for the displacement. If this site itself be vulnerable to natural hazards, it will cause the collapse of the physical, economic and social environment of villages. Vulnerability assessment in relation to natural hazards requires precision tools with applications in the spreadsheet spatial level. Therefore, in this study, in order to evaluate the rate of stability of the chosen site for displacement and relocation of Googerd village, at first the rate and range of displacement during the period from 2003 to 2010 were derived using 25 ASAR ENVISAT radar images and SBAS differential radar interferometry (D-InSAR) technique. The results showed that the stability of the selected sites does not have the favorable conditions and experience on average 12 cm line of sight (LOS) displacement. In order to conduct survey on the hillside of study area against mass movements and assessment of environmental stability and optimized understanding of them, displacement time series plots was drawn for six points around the selected site. These figures indicate that there is variable line of sight (LOS) rate of downward motion between 14-8 cm in all sides of selected site.
zeinab Bahrami; Shahram Roostaei
Volume 18, Issue 47 , April 2014, , Pages 1-21
Abstract
During the last two decades, a lot of efforts in different grounds have taken for completing and developing of geomorphological inheritances. One of the natural attractions of Lorestan Province is beautiful Pole-dokhtar wetlands which define as a geomorphologic tourist place. This area is located at ...
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During the last two decades, a lot of efforts in different grounds have taken for completing and developing of geomorphological inheritances. One of the natural attractions of Lorestan Province is beautiful Pole-dokhtar wetlands which define as a geomorphologic tourist place. This area is located at 47˙, 42’ of eastern longitudes and 33˙, 5’ of northern latitude, and at height 735 m from sea level. Evaluation of scientific value and additional value methods are used in order to evaluate of landforms in geomorphosite of Pole-dokhtar wetlands. In this study, besides a complete analysis of this place according to scientific, economic, ecologic, aesthetic and historical values, a relation was caused between geomorphology and other natural phenomena. After the explanation of the purposes of evaluation methods and identification of the features of Pole-dokhtar wetlands, the results of this study showed that the scientific and aesthetic value of this location is at the first place than other criteria. While the economic value of this place receive the lowest rate. The existence of such a situation Indicate lack of identification of this place, Lack of coordination between planners, Poor management of related organizations and inadequate knowledge in the field of geotourism that led to the Lack of economic development.
