با همکاری انجمن هیدرولیک ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار پژوهشی ، بخش تحقیقات حفاظت خاک و آبخیزداری ، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی، سازمان آموزش تحقیقات و ترویج کشاورزی، یزد، ایران.

2 دانشیار، گروه مدیریت مناطق خشک و بیابانی، دانشکده منابع طبیعی و کویر شناسی ، دانشگاه یزد، یزد، ایران.

3 دانش آموخته کارشناسی ارشد سنجش از دور و سیستم اطلاعات جغرافیایی، گروه جغرافیا-بخش برنامه ریزی محیطی، دانشکده علوم انسانی و اجتماعی ، دانشگاه یزد ، یزد، ایران.

10.22077/jaaq.2025.10202.1130

چکیده

برآورد تبخیر و تعرق به عنوان یکی ‌از عوامل مؤثر در مدیریت منابع آب و کشاورزی بسیار ضروری است. روش‌های مختلفی برای این کار وجود دارد که به فراخور دقت مورد نیاز در برآورد و نوع کاربرد، مورد استفاده قرار می‌گیرد. در این پژوهش به منظور ارزیابی دقت مدل سبس، در برآورد تبخیر و تعرق واقعی در بازه زمانی 2015 لغایت 2019 از 19 تصویر ماهواره‌ای لندست‌8 برای حوزه میانکوه با استفاده از نرم‌افزار الویس، نقشه‌های روزانه تبخیر و تعرق برای حوزه میانکوه تهیه شد. با استفاده از داده‌های ایستگاه هواشناسی، تبخیر و تعرق مرجع از روش فائو پنمن مانتیث به صورت روزانه محاسبه شد. که بعد از محاسبه میزان تبخیر و تعرق روزانه برای مدل از تبخیر و تعرق پتانسیل برای ارزیابی نتایج تحقیق استفاده شده است. ارزیابی نتایج به دست آمده از مدل سبس با داده‌های تبخیر و تعرق روزانه (پنمن مانتیث) با استفاده از چهار شاخص ضریب همبستگی(R2)، ریشه میانگین مربعات خطا(RMSE) و میانگین قدر مطلق خطا(MAD) و نش- ساتکلیف (NS) سنجیده شد که اندازه‌های این سه شاخص به ترتیب 64/0، 8/1 ،4/2 و 62/0 محاسبه شد که نشان از دقت خوب مدل سبس برای برآورد تبخیر و تعرق واقعی در منطقه مطالعه شده می باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Evaluation and calibration of the SEBS surface energy balance model in estimating evapotranspiration in the Ibrahim Abad plain affected by the flood water spreading of the Mehriz Miankouh-Yazd province

نویسندگان [English]

  • Jalal Barkhordari 1
  • Mohammad Hosain Mokhtari 2
  • Hajar Payandeh 3

1 Research Assistant Professor, Soil Conservation and Watershed Management Research Department, Agricultural and Natural Resources Research and Education Center, Agricultural Research and Extension Education Organization, Yazd, Iran.

2 Associate Professor, Department of Arid and Desert Area Management, Faculty of Natural Resources and Desert Studies, University of Yazd, Yazd, Iran.

3 MSc Graduated in Remote Sensing and Geographic Information Systems (RS & GIS), Department of Geography – Environmental Planning Division, Faculty of Humanities and Social Sciences, University of Yazd, Yazd, Iran.

چکیده [English]

Estimation of evapotranspiration is very essential as one of the effective factors in water resources and agriculture management. There are different methods for this task that are used according to the accuracy required in the estimation and the type of application. In this research, in order to evaluate the accuracy of the SEBS model in estimating actual evapotranspiration in the period 2015-2019, daily evapotranspiration maps for the Miankauh basin were prepared from 19 Landsat 8 satellite images for the Miankauh basin using Elvis software. Using meteorological station data, reference evapotranspiration was calculated daily using the FAO Penman Monteith method. After calculating the daily evapotranspiration for the model, potential evapotranspiration was used to evaluate the research results. The evaluation of the results obtained from the SEBS model with daily evapotranspiration data (Penman Monteith) was measured using four indices: correlation coefficient (R2), root mean square error (RMSE), mean absolute error (MAD), and Nash-Sutcliffe (NS). The values of these three indices were calculated as 0.64, 1.8, 2.4, and 0.62, respectively, which indicates the sufficient accuracy of the SEBS model for estimating real evapotranspiration in the studied area.

کلیدواژه‌ها [English]

  • Actual evapotranspiration
  • Remote sensing
  • Landsat 8
  • SEBS
  • Yazd Miankauh basin
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