مکان یابی مناطق مناسب پخش سیلاب با استفاده از روش فرآیند تحلیل شبکه ای (آان‌پی) در شهرستان خاتم، یزد

نوع مقاله : پژوهشی

نویسندگان

1 استادیار، دانشکد هی مهندسی نقش هبرداری و اطلاعات مکانی، پردیس دانشکد هی فنی، دانشگاه تهران، ایران

2 کارشنا سارشد، گروه سنجش ازدور و سامانه ی اطلاعات جغرافیایی، دانشکده ی جغرافیا، دانشگاه تهران، ایران

چکیده

اولین و مهمترین نیاز در انجام هر طرح پخ شسیلاب، مکان یابی مناطق مناسب برای پخش کردن سیلاب و نفوذ دادن آن به سفر ههای زیرزمینی است. در این پژوهش از تلفیق سامان ههای اطلاعات مکانی و سامان ههای تصمی مگیری چندمعیاره در قالب روش آان پی برای تعیین مناطق مناسب پخ شسیلاب استفاده شد. معیارهای لازم، تأثیرگذار و موجود در منطقه برای پخ شسیلاب شناسایی شدند و لای ههای اطلاعاتی در محیط جی آی اس آماده گردید، وزن هر معیار و رد ههای هر لایه با استفاده از روش آا نپی و مقایس هی زوجی حساب شد، و کل منطقه برحسب معیارهای وز ندهی شده پهن هبندی شد. در نهایت، با تلفیق لای ههای اطلاعاتی براساس فرآیند آا نپی، محدود هها به پنج طبقه درطیف کاملاًنامناسب تا کاملاًمناسب تقسیم شد. نتایج نشان داد که نه درصد از مساحت شهرستان برای پخ شسیلاب توان کاملاًمناسب دارد، و این مکا نها روی مخروط افکنه ها، سازندهای دوران چهارم و شی بهای ک متر از سه درصد قرار دارند. با توجه به بازدیدهای زمینی مشخص شد که پخ شسیلا بهای انجا مشده عمدتاً در نواحی کاملاًمناسب بوده است.

کلیدواژه‌ها

عنوان مقاله [English]

Locating Suitable Areas for Flood Spreading Using Analytic Network Process (ANP) in Khatam County, Yazd

نویسندگان [English]

  • Rahim Ali Abbaspour 1
  • Hadi Mahmoudi Meimand 2
1 Assistant Professor, School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran, Iran
2 MSc. in Remote Sensing and GIS, Department of Remote Sensing and GIS, Faculty of Geography, University of Tehran, Tehran, Iran
چکیده [English]

Finding suitable locations for floodwater spreading and its infiltration into the aquifer is the first and most important requirement in any floodwater spreading project. In this study, a combination of geospatial information system (GIS) and multi criteria decision making (MCDM) is used in the form of analytic network process (ANP) method in order to determine the most appropriate areas of floodwater spreading. In the first step, necessary, effective, and available criteria, which influence the spreading of floodwater in the region, were identified. The information layers were prepared in the GIS and weights of the criteria and layer classes were calculated using the ANP and paired comparisons method, and the whole region was partitioned in terms of the weighted criteria. Finally, by combining layers of information based on the ANP process, ranges were divided into five categories from very poor to very good. Results showed that 9% of the area has very good potential for floodwater spreading, and these places are located on alluvial fans, quaternary formation and slopes less than 3%. Moreover, according to the field survey, it was determined that the already performed floodwater spreading have mainly been practiced in suitable areas.

کلیدواژه‌ها [English]

  • ANP
  • Flood water spreading
  • Khatam County
  • location
  • paired comparisons

مراجع

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فایل ها

سابقه مقاله

  • تاریخ دریافت: 31 فروردین 1391
  • تاریخ بازنگری: 19 آذر 1391
  • تاریخ پذیرش: 28 فروردین 1392

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