首页    期刊浏览 2024年11月29日 星期五
登录注册

文章基本信息

  • 标题:ارزیابی تطبیقی روش‌های رتبه‌بندی مخاطرات طبیعی در مناطق روستایی (مطالعه موردی: استان زنجان)
  • 其他标题:Comparative Assessment of Ranking Methods for Natural Disasters in Rural Regions (Case Study: Zanjan Province)
  • 本地全文:下载
  • 作者:Taherkhani, Mehdi ; Sojasi Qeydari, Hamdollah ; Sadeghloo, Tahereh
  • 期刊名称:Pizhūhish/hā-yi Rūstāyī
  • 印刷版ISSN:2008-7373
  • 电子版ISSN:2423-7787
  • 出版年度:2012
  • 卷号:2
  • 期号:7
  • 页码:31-54
  • 出版社:University of Tehran
  • 摘要:مخاطرات طبیعی همواره از مهم‌ترین موضوعات مطرح در جوامع روستایی به شمار می‌آمده، و برنامه‌ریزی برای مقابله و پیشگیری از این مخاطرات و آثار زیان‌بار آن‌ها در زمرة اهداف بلندمدت جوامع مذکور بوده است. از این‌رو همواره استفاده از روش‌شناسی‌های علمی روز در مطالعات مربوط به مخاطرات طبیعی بسیار ضروری است. در این زمینه بهره‌گیری از روش‌ها و مدل‌های تصمیم‌گیری به منظور سازماندهی و برنامه‌ریزی بهینه ابزارهای مهم قلمداد می‌گردند که با اهداف متعددی چون اولویت‌بندی، مدل‌سازی، تصمیم‌گیری، انتخاب و نظایر اینها نقش مهمی در حوزه فعالیت‌هایی از این دست ایفا می‌کنند. این تکنیک‌ها در دو گروه عمده مدل‌های تصمیم‌گیری چندهدفه و چندشاخصه تقسیم می‌گردند، که در این میان مدل‌های تصمیم‌گیری چندشاخصه با توجه به کارایی بیشتر، خود به دو گروه مدل‌های جبرانی و غیرجبرانی طبقه‌بندی می‌شوند. بدین ترتیب در مقاله حاضر ابتدا بر اساس تعدادی شاخص به اولویت‌بندی روش‌های وزن‌دهی از دیدگاه متخصصان پرداخته می‌شود و سپس در گام بعدی با در نظر گرفتن مجموعه‌ای از ?? شاخص برای مخاطرات در روستاهای دهستان سجاس‌رود استان زنجان با ?? روستا در سطح شوراها، با به کارگیری یک مدل از هر زیرگروه به مقایسه دقت نتایج حاصل از اولویت‌بندی ?? نوع مخاطره پرداخته شد. یافته‌ها بیانگر آن بود که از نظر متخصصان مناسب‌ترین شیوه وزن‌دهی AHP و رتبه‌بندی مخاطرات بر اساس روش‌های تصمیم‌گیری چندشاخصه بیشترین همبستگی را میان روش SAW با دیگر روش‌های رتبه‌بندی داشته است. بدین ترتیب روش SAW را می‌توان گزینه‌ای مطلوب‌تر به منظور رتبه‌بندی مخاطرات طبیعی در مناطق روستایی به شمار آورد.
  • 其他摘要:Introduction A natural hazard is a threat of a naturally occurring event which has negative effects on human lives. This negative effect is called a natural disaster. Natural Hazards (and the resulting disasters) are the out comes of naturally occurring processes that have operated throughout the history of Earth. The assessment of vulnerability at the community level is currently strongly evolving. Also participatory methods are seen as the way forward to act successfully at the local/community level. In order to carry out effective measures for risk reduction, information has to be available about the certain hazards that threaten a certain area, the elements at risk (population, buildings, infrastructure, economic activities) that are exposed to these hazards, the vulnerability of these elements at risk and an estimation on the expected losses. The concept of vulnerability has not been finally defined yet and the indicators and agreements on how to measure the "measurelss"es are still on its way. Natural hazards have always been among the most important problems in rural community and planning opposition and prevention from these disasters and their obnoxious effects had been among the long term goals of these communities. Risk Assessment involves not only the assessment of hazards from a scientific point of view, but also the socio-economic impacts of a hazardous event. Risk is a statement of probability that an event will cause x amount of damage, or a statement of the economic impact in monetary terms that an event will cause. Risk assessment involves: 1- hazard assessment, 2- location of buildings and other infrastructure in the areas subject to hazards, 3- potential exposure to the physical effects of a hazardous situation, 4- the vulnerability of the community when subjected to the physical effects of the event. Therefore Risk assessment helps the decision -makers and scientists to compare and evaluate potential hazards, set priorities on what kinds of mitigation are possible, and set priorities on where to focus resources and further study.Risk assessment involves: 1- hazard assessment, 2- location of buildings and other infrastructure in the areas subject to hazards, 3- potential exposure to the physical effects of a hazardous situation, 4- the vulnerability of the community when subjected to the physical effects of the event. Therefore Risk assessment helps the decision -makers and scientists to compare and evaluate potential hazards, set priorities on what kinds of mitigation are possible, and set priorities on where to focus resources and further study.MethodologyTo improve the capacity of communities and local governments to measure key elements of their current disaster risk, a community based indicator system was developed. Using indicators on community level in this context is a rather new and innovative approach. The established conceptual framework systemizes the key elements of disaster risk into the factors of Hazard, Exposure, Vulnerability and Capacity & Measures. The framework helps to understand the driving forces (factors) at work and served to identify appropriate indicators. Hence, using the scientific and new methodology is so important in these areas. In this way, application the decision making methods and models is an important tool for accessing to optimum organizing and planning that play main role in multiple goals such as measurement, weighting, decision making, selection, etc. in such action extent. These techniques categorized in two main groups: multi criteria, and multi objective decision making models. The multi criteria decision making model as for their more efficiency, cleave to Non- Compensatory Model and Compensatory Model. Thus, current study, first measured the priority of weighting method from experts attitude and then with regard to set of criteria for disaster in rural of Sojasrud village, with 47 rural in council level, by employing one model from each subgroup of Non- Compensatory Model and Compensatory Model, compared the results accuracy in measurement of 12 hazards types. Results & DiscussionRanking methods, similarity measures and uncertainty measures are very important concepts for interval Comparative assessment. In this report, several ranking methods, similarity measures and uncertainty measures for Comparative assessment natural hazard in rural area were evaluated based on real survey data. The SAW ranking method was the best one, according to the results.ConclusionIn the first step, it was shown that between many waiting method, AHP weighting technique from expert’s attitude has been the best technique for weighting. In second step, Results introduced that from expert attitude, the best method for weighting was AHP method and SAW method had a great correlation with other methods (TOPSIS, ELECTRE, LEXICOGRAPH). Therefore the SAW method acted as an ideal option in natural hazards measurement in rural area. The results of this research will help rural Decision making, risk management, Natural Disasters management and planning for rural area for better understanding how to use methods effectively in rural planning and management processing.
  • 关键词:ارزیابی;زنجان;سجاس‌رود.;مخاطرات طبیعی;مدل‌های تصمیم‌گیری
  • 其他关键词:Decision making model;LEXICOGRAPH;Natural disasters;Sojasrud village;TOPSIS
国家哲学社会科学文献中心版权所有