پتانسیل‏‌یابی منابع آب زیرزمینی با استفاده از فرایند تحلیل شبکه ‏ای در محیط سیستم اطلاعات جغرافیایی (مطالعۀ موردی: حوضه ‏های آبریز منتهی به دشت تبریز)

نوع مقاله : پژوهشی

نویسندگان

1 استاد گروه ژئومورفولوژی، دانشکدۀ جغرافیا و برنامه‏ ریزی، دانشگاه تبریز

2 کارشناسی ارشد سنجش از دور و GIS، دانشکدۀ جغرافیا و برنامه‏ ریزی، دانشگاه تبریز

3 کارشناسی ارشد سنجش از دور و GIS، دانشکدۀ جغرافیا و برنامه ‏ریزی، دانشگاه تبریز

چکیده

حوضه‏های آبریز منتهی به دشت تبریز جزء زیرحوضه‏های حوضۀ آبریز دریاچۀ ارومیه محسوب می‏شود که در استان آذربایجان شرقی و شمال غرب ایران واقع شده است. مساحت این حوضه‏ها 5397 کیلومترمربع و کشاورزی یکی از منابع اصلی درآمد مردم است که به منابع آب زیرزمینی و سطحی وابسته است. هدف از انجام پژوهش حاضر، بررسی حوضه‏های آبریز منتهی به دشت تبریز از نظر پتانسیل منابع آب زیرزمینی با بهره‏گیری از سیستم اطلاعات جغرافیایی است. برای نیل به این هدف از روش تحلیل شبکه‏ای و روابط بین معیارهای اقلیمی، هیدرولوژی، زمین‏شناسی، توپولوژی و زیست‏محیطی استفاده شد. وزن معیارها با استفاده از روش تحلیل شبکه محاسبه شد: زمین‌شناسی (267/0)، بارش (208/0)، تراکم آبراهه (130/0)، پوشش گیاهی (119/0)، فاصله از آبراهه (076/0)، تراکم گسل (054/0)، شیب (042/0)، فاصله از گسل (034/0)، طبقات ارتفاعی (028/0)، جهت شیب (019/0) و دما (018/0). در نهایت، 5 طبقه با پتانسیل بسیار زیاد، زیاد، متوسط، کم و بسیار کم در منطقه شناسایی شد. نتایج تحقیق نشان داد مناطق با پهنه‏های پتانسیل زیاد و بسیار زیاد بیشتر منطبق بر ارتفاعات پایین و رسوبات آبرفتی درشت‏دانۀ دوران چهارم و مخروط‌‏افکنه‏ها‌ست. مناطق با پهنه‏های پتانسیل کم و بسیار کم نیز به‌ترتیب منطبق بر بیشترین ارتفاعات (به‌دلیل شیب تند) و مناطق دارای جنس مارنی و شیلی (به‌علت نفوذپذیری خیلی کم و تبخیر زیاد) است.
 
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Potential Detection of the Groundwater Resources Using Analytic Network Process in Geographic Information System(Case Study: Basins Leading to Tabriz Plain)

نویسندگان [English]

  • Mohammad Hossein Rezaei Moghaddam 1
  • Tohid Rahimpour 2
  • Mahsa Nakhostinrouhi 3
1 Department of Geomorphology, Faculty of Geography and Planning, University of Tabriz
2 M.A. in Remote Sensing and GIS, Faculty of Geography and Planning, University of Tabriz
3 M.A. in Remote Sensing and GIS, Faculty of Geography and Planning, University of Tabriz
چکیده [English]

Basins leading to Tabriz plain are part of the sub-basins of Urmia Lake basin, which is located in the east Azerbaijan province and in the north-western part of Iran. The area of this basin is 5397 km2, and Agriculture is one of the main sources of income for the people, which is dependent on groundwater and surface water resources. In this study, an attempt was made to investigate the basins leading to Tabriz plain in terms of potential detection of the groundwater resources using GIS. To achieve this aim, analytic network process and relationships between climate, hydrology, geology, topology, and environmental criteria were applied. Weights of criteria were calculated by analytic network method: geology (0.267), precipitation (0.208), stream density (0.130), vegetation cover (0.119), distance from stream (0.076), fault density (0.054), slope (0.042), distance from fault (0.034), elevation classes (0.028), aspect (0.019), and temperature (0.018). Finally, 5 potential classes including, very high, high, moderate, low, and very low were identified in the study area. The results of the study indicated that regions with high and very high potential often correspond with low elevations and alluvial large grain sediments of fourth era and fans. Also, low and very low potential regions respectively correspond with maximum heights (due to steep slope), and marl and shale regions (due to very low penetranceand high evaporation).
 
 

کلیدواژه‌ها [English]

  • potential detection
  • groundwater
  • Geographic Information System
  • Analytic Network Process
  • Basins leading to Tabriz plain
 
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