عملکرد مدل WEAP در شبیه‏سازی هیدرولوژیک حوضۀ آبخیز الند

نوع مقاله : پژوهشی

نویسندگان

1 دانشجوی دکتری مهندسی آبیاری و زهکشی، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه ارومیه

2 دانشیار گروه مهندسی آب، پژوهشکدۀ مطالعات دریاچۀ ارومیه، دانشگاه ارومیه

3 دانشیار گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه ارومیه

4 دانشیار گروه مهندسی آبیاری و آبادانی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران

چکیده

بهره‏مندی از مدل‏‏های هیدرولوژیک، امکان برنامه‏ریزی صحیح و پایدار در مدیریت منابع آب را فراهم می‏کند. در پژوهش حاضر، با هدف شبیه‏سازی جریان حوضۀ آبخیز الند (واقع در حوضۀ رود ارس) به‏عنوان آبخیزی تحت تأثیر فعالیت‏های انسانی، مدل WEAP توسعه، واسنجی و اعتبارسنجی شد. به این منظور، یک دورۀ آماری 11 ساله (1379 تا 1390) برای واسنجی و یک دورۀ پنج‌ساله (1390 تا 1395) به منظور اعتبارسنجی مدل در نظر گرفته شد. نتایج شبیه‏سازی مدل در خروجی حوضۀ آبخیز نشان داد شاخص‏های آماری ضریب تعیین و ضریب نش‌ـ ساتکلیف در دورۀ واسنجی به‏ترتیب برابر با ۹6/۰ و 85/۰ و در دورۀ اعتبارسنجی به‏ترتیب برابر با 79/۰ و 78/0 بودند. این نتایج بیان‌کنندۀ عملکرد خوب مدل WEAP در شبیه‏سازی رفتار هیدرولوژیک اعم از بارش-رواناب، جریان پایه، آب زیرزمینی و سایر اجزای بیلان آبی حوضۀ آبخیز الند است. در تحقیق حاضر، نتایج شبیه‏سازی سناریوی تأمین آب شرب منطقه از سد آق‏چای بیان‌کنندۀ کاهش در افت سطح آب زیرزمینی و افزایش حجم آبخوان به میزان سالیانه 4/5 میلیون مترمکعب بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The performance of WEAP model in hydrologic simulation of Aland watershed

نویسندگان [English]

  • Mohammad Ashrafi 1
  • Kamran Zeinalzadeh 2
  • Sina Besharat 3
  • Mehdi Yasi 4
1 Department of Water Engineering, Faculty of Agriculture, Urmia University, Iran.
2 Department of Water Engineering, Urmia Lake Research Institute, Urmia University,Urmia, Iran.
3 Department of Water Engineering, Agriculture Faculty, Urmia University, Iran
4 Department of Irrigation & Reclamation Engineering, University of Tehran, Karaj Campus, Karaj 3158777871, IRAN
چکیده [English]

Utilizing hydrological models allows for the correct and sustainable planning of water resources management. In this research, with the aim of simulating the flow of the Aland watershed (located in the Aras river basin) as a watershed under the influence of human activities, the WEAP model was developed, calibrated and validated. For this purpose, an 11-year statistical period (2001 to 2011) was used to calibrate and a five-year period (2011 to 2016) was used to validate the model. The model simulation results at the basin outlet showed statistical indices of the coefficient of determination and Nash-Sutcliffe Efficiency (NSE) were 0.96 and 0.85, in the calibration period, respectively, and during the validation period there were 0.79 and 0.78, respectively. These results indicate the good performance of the WEAP model in simulating hydrologic behavior, including rainfall-runoff, base flow, groundwater and other components of the water balance of the Aland watershed. In this research, the simulation results of drinking water supply scenario from the Agh Chay Dam indicate a reduction in groundwater level drop and an increase in the volume of aquifer at an annual rate of 5.4 million cubic meters.

کلیدواژه‌ها [English]

  • Water balance
  • Sustainable Development
  • Water management
  • Model calibration
  • Model validation
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