Omid Rahmati; Aliakbar Nazari Samani; Mohammad Mahdavi
Abstract
Determination of groundwater potential in respect to increasing trend of water demand in Iran, is found to be an unavoidable and vital subject. The present research was aimed to assess the efficiency analytical hierarchical process (AHP) to identify potential groundwater zones. Initially, five parameters ...
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Determination of groundwater potential in respect to increasing trend of water demand in Iran, is found to be an unavoidable and vital subject. The present research was aimed to assess the efficiency analytical hierarchical process (AHP) to identify potential groundwater zones. Initially, five parameters (viz., lithology, annual rainfall, drainage density, lineament density and land slope) were used in Ghorveh-Dehgalan plain. Influencing groundwater potential were selected. A questionnaire was prepared to collect ten experts attitudes to paired comparison of such parameters. The normalized weights of criteria/parameters were determined based on Saaty’s 9 point scale and its importance in specifying groundwater potential zones using analytical hierarchy process (AHP) and eigenvector method. To prepare lineament distribution maps, ETM+ Landsat images and PCI Geomatica were applied. Finally, the set of criteria were integrated by weighted linear combination method using ArcGIS 9.3 software to generate groundwater potential prediction map. The pumping test results collected and overlaid with groundwater potential prediction map. The validation of the groundwater potential prediction map was conducted based on frequency ratio and results of pumping 20 wells in study area. Results from comparing predicted potential of groundwater and by the groundwater specific capacity (SPC) showed 85% accuracy. It was established in the study that the AHP technique is promising of make accurate and reliable prediction, specifically in no-data aquifers.
mahdieh salehi; Hossein Arzani; ِAli Tavili; Mahdi Ghorbani
Abstract
Rrecently, rangeland multiple use has been found to be one of the primary solutions to alleviate livestock grazing pressure while improving stakeholder's welfare and per capita income and sustainable management and development. Beekeeping in rangeland as a profitable approach and one of multiple use ...
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Rrecently, rangeland multiple use has been found to be one of the primary solutions to alleviate livestock grazing pressure while improving stakeholder's welfare and per capita income and sustainable management and development. Beekeeping in rangeland as a profitable approach and one of multiple use components in upper Taleghan basin and Saman Orfi of Narian, Dizan and Mehran were studied. The present study was aimed to determine beekeeping suitability as well as ecological and social issues. According to permanent standards and resource sites priority for comprising of these Samans Orfi reserves 4 criteria to be considered such as vegetation,environmental, physical and social issues.These criteria are included overall 14 sub criteria. So Multi-Criteria Decision Making Methods (MCDM) has used because of problem complexity. The hierarchical formed in the 4 levels that is purpose, criteria, sub criteria and options. One of the criteria were qualitative. For accessing logical results, we benefit specialist cooperation. The results showed that social problem are more important than the other criteria in priority. Also, final results of Analytical Hierarchy Process (AHP) indicated that Saman Orfi Narian, and Mehran and Dizin were fall into first to third priorities respectively.
Emad Zakeri; Mahdi Ghorbani; Ali Bozorgmehr; Hojatollah Rabani Nasab
Abstract
Current nomad settlement programs seek improving the quality of nomads’ life as their ultimate goal. However, it seems some of these programs failed due to some problems such as socio- economic problems that appear after settlement or due to the lack of proper preliminary studies before the implementation. ...
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Current nomad settlement programs seek improving the quality of nomads’ life as their ultimate goal. However, it seems some of these programs failed due to some problems such as socio- economic problems that appear after settlement or due to the lack of proper preliminary studies before the implementation. Nomad settlement program in Northern Khorasan is not an exception; therefore, identification and prioritization of problems before implementation of the program in Northern Khorasan is essential for better planning. The required data to identify and prioritize nomad settlement problems and to plan for their proper settlement were gathered through a questionnaire including the criteria and sub-criteria as well as options to solve extant challenges. The questionaire then was completed by experts and analyzed by using the analytic hierarchy process in Expert Choice2000. The results showed that cultural and social management and planning factors with coefficients of (0.433) and (0.314), respectively left the greatest influence on the failure of relevant projects in North Khorasan province. Therefore; the reform of the administrative and planning system as an important solution to problems related to the management and planning criteria and increasing the nomads’ participation in planning and management as an important solution to problems related to social and cultural criteria were assessed in present study.
Koroosh Shirani; Mohammadreza Haji Hashemi Jazi; Seyyed Ali Niknejad; Soleiman Rakhsha
Abstract
In western and southern watersheds of Isfahan province, combinations of natural and human factors have caused numerous landslides related damages. One of the main strategies for restricting the damage caused by the landslide is to avoid these regions. For this purpose, it is necessary to prepare precise ...
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In western and southern watersheds of Isfahan province, combinations of natural and human factors have caused numerous landslides related damages. One of the main strategies for restricting the damage caused by the landslide is to avoid these regions. For this purpose, it is necessary to prepare precise landslide hazard zonation map for such areas. For this purpose, by aerial photos, satellite images, geological maps and field studies , landslide inventory map was prepared in of the upstream watersheds of Karoon Basin called Marber River Basin with an area of 800 square kilometers. Then, nine factors including lithology, slope, land use, rainfall, vegetation cover, aspect, and lineaments elements such as road, fault and drainages were studied as 54 parameters. To enhance accuracy, speed and ease of analysis, all spatial and descriptive data were interred into GIS and 27466 homogeneous units were obtained by overlapping of the mentioned map layers. Analytical Hierarchy Process (AHP) and Multivariate Regression (MR) were used for multi criteria decision analysis and the results showed that both methods have the same accuracy in the separation of zones (lines) with the specific index of landslide risk.. But AHP approach of regression data, based on total quality index as an indicator of the accuracy of the learning has higher acceptability. This is related to this fact that the method has considered all 54 effective parameters due to the inherent performance of natural phenomena and events involved with the landslide. Based on multivariate regression method, only 30 of 54 variables were significant at 95% and 99% levels and r coefficient of regression equation was 57% which is quite acceptable