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اولویت‌بندی سیل‌خیزی زیرحوزه‌های آبخیز مهارلو در استان فارس با استفاده از پارامترهای مورفومتریک و مدل تصمیم‌گیری VIKOR | ||
| اکوهیدرولوژی | ||
| مقاله 8، دوره 5، شماره 3، مهر 1397، صفحه 813-827 اصل مقاله (1.01 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2018.244246.763 | ||
| نویسندگان | ||
| مهدیس امیری1؛ حمیدرضا پورقاسمی* 2؛ علیرضا عرب‌عامری3 | ||
| 1دانشجوی کارشناسی ارشد مدیریت مناطق بیابانی، دانشکدۀ کشاورزی، دانشگاه شیراز | ||
| 2استادیار بخش مهندسی منابع طبیعی و محیط زیست، دانشکدۀ کشاورزی، دانشگاه شیراز | ||
| 3دانشجوی دکتری ژئومورفولوژی دانشگاه تربیت مدرس | ||
| چکیده | ||
| هدف از تحقیق حاضر، اولویت‌بندی مکانی سیل‌خیزی زیرحوزه‌های آبخیز مهارلو با استفاده از پارامترهای مورفومتریک و مدل تصمیم‌گیری VIKOR است. به این منظور، 13 پارامتر مورفومتری شامل درجۀ شیب، تراکم زهکشی، فراوانی آبراهه، ثابت‌نگه‌داشت آبراهه، بافت زهکشی، عدد ناهمواری، ضریب گردی، ضریب فشردگی، نسبت ناهمواری، طول جریان، ضریب فرم، ضریب کشیدگی و ضریب شکل و یک پارامتر اقلیم شامل بارندگی انتخاب شد. برای تعیین وزن پارامترها از مدل فرایند تحلیل سلسله‌مراتبی (AHP) استفاده شد. نتایج وزندهی پارامترها با استفاده از مدل AHP نشان داد پارامترهای مورفومتری درجۀ شیب و تراکم زهکشی و پارامتر اقلیمی بارندگی بهترتیب با مقدار (206/0، 165/0 و 134/0) بیشترین وزن و تأثیر را در رخداد سیل منطقۀ مطالعه‌شده داشتند، در حالی که کمترین وزن و در پی آن حداقل تأثیر مربوط به ضریب شکل (012/0) بود. همچنین، بهمنظور اولویت‌بندی 53 زیرحوضۀ آبخیز مهارلو از مدل تصمیم‌گیری VIKOR استفاده شد. نتایج نشان داد زیرحوزۀ 34 براساس اولویت‌بندی سیل‌خیزی رتبۀ اول (082/0) ، زیرحوضۀ 31 رتبۀ دوم (110/0) و زیرحوضۀ 12 رتبۀ سوم (129/0) را به خود اختصاص دادهاند که باید برای انجام عملیات مدیریتی در اولویت قرار گیرند، در حالی که زیرحوضۀ 42 آخرین رتبه [1] را در اولویت‌بندی سیل‌خیزی داشت که بیان‌کنندۀ حساسیت بسیار کم آن به وقوع سیل است. | ||
| کلیدواژه‌ها | ||
| اولویت‌بندی سیل‌خیزی؛ پارامترهای مورفومتری؛ حوزۀ آبخیز مهارلو؛ فرایند تحلیل سلسله‌مراتبی؛ مدل VIKOR | ||
| عنوان مقاله [English] | ||
| Prioritization of Flood Inundation sub-watersheds of Maharlo Watershed in Fars Province Using Morphometric Parameters and VIKOR Decision Making Model | ||
| نویسندگان [English] | ||
| Mahdis Amiri1؛ Hamidreza Pourghasemi2؛ Alireza Arabameri3 | ||
| 1M.Sc student in Shiraz University | ||
| 3PhD Student in Geomorphology, Tarbiat Modares University | ||
| چکیده [English] | ||
| The current study aims to prioritize of spatial flooding of Maharlo Sub-watersheds using morphometric parameters and VIKOR decision model. So, to select 13 morphometric parameters including slope, drainage density, stream frequency, constant of channel maintenance, drainage texture rate, ruggedness number, circularity ratio, compactness coefficient, relief ratio, stream length, form factor, elongation ratio, and coefficient of shape, and 1 climatic parameter including rain have been used to determine the weight of the parameters of the AHP. The results showed that the morphometric parameters such as slope and drainage density, and the climatic parameter of the rain, with values of (0.206, 0.165 and 0.134) had the most weight and effect on flood event, while the least weight and consequently the least effect on the coefficient is related to shape (0.122) factor. Also, for prioritizing used from 53 sub-watersheds based on VIKOR decision model. The results showed that sub-watershed 34 based on prioritization of flood first ranked (0.082), The second sub- watershed 31 (0.110) and sub- watershed 12 third ranked (0.129) given specialty, which must have to be prioritized for management operations. While sub-watershed 42 has the last ranked (1) in prioritization of flood, which is indicate low sensitivity to flood events. | ||
| کلیدواژه‌ها [English] | ||
| Prioritization of flood, Morphometry parameters, Analysis Hierarchical Process, Vikor Model, Maharlo Watershed | ||
| مراجع | ||
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