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بررسی قابلیت استفاده از ضریب تشت تبخیر برای محاسبه تبخیر و تعرق گیاه مرجع در منطقه خرم آباد | ||
| مدیریت آب و آبیاری | ||
| دوره 11، شماره 3، آبان 1400، صفحه 461-471 اصل مقاله (900.39 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jwim.2021.324929.878 | ||
| نویسندگان | ||
| مبینا احمدی مرادی1؛ مهری سعیدی نیا* 2؛ علی حیدر نصرالهی2؛ مجید شریفی پور2 | ||
| 1دانشجوی کارشناسی ارشد، مهندسی آبیاری و زهکشی، دانشگاه لرستان، لرستان، ایران. | ||
| 2استادیار، گروه علوم ومهندسی آب، دانشگاه لرستان، لرستان، ایران. | ||
| چکیده | ||
| برآورد تبخیر و تعرق گیاه مرجع یکی از اجزای مهم در طراحی سیستم‌های آبیاری و مدیریت آب برای آبیاری گیاهان می-باشد. در این پژوهش چهار ضریب تشت تبخیر تشت اشنایدر (1992)، اورنگ (1998)، آلن و پروت (1991) و کونیکا (1989) جهت برآورد تبخیر و تعرق مرجع نسبت به مدل فائو- پنمن- مانتیث با استفاده از شاخص‌های RMSE، MAE، AARE، MR و ضریب اسپیرمن مورد ارزیابی قرار گرفتند. اطلاعات مورد نیاز ضرایب مختلف جهت برآورد (ETo ) از ایستگاه سینوپتیک خرم‌آباد جمع آوری گردید. نتایج ارزیابی آماری نشان داد در دوره روزانه ضرایب تشت اورنگ (1998) و اشنایدر (1992) به ترتیب با RMSE برابر 004/1 و 13/1 (mm.day-1) به عنوان مناسب‌ترین و ضرایب تشت آلن و پروت (1991) و کونیکا (1989) به ترتیب با RMSE برابر 83/1 و 47/1 (mm.day-1) به عنوان نامناسب‌ترین ضرایب انتخاب شدند. از طرف دیگر نتایج ارزیابی آماری برای دوره 10 روزه ضرایب تشت کونیکا (1989) و اشنایدر (1992) به ترتیب با RMSE برابر 01/6 و 25/8 (mm.day-1) به عنوان مناسب‌ترین ضرایب و ضرایب آلن و پروت (1991) و اورنگ (1998) با RMSE برابر 90/13 و 43/9 (mm.day-1) به عنوان نامناسب‌ترین ضرایب انتخاب شدند. همچنین آزمون همبستگی اسپیرمن نشان داد که نتایج همه‌ی ضرایب، همبستگی قابل قبولی نسبت به روش مرجع دارند. | ||
| کلیدواژه‌ها | ||
| تبخیر و تعرق مرجع؛ خرم‌آباد؛ ضریب تشت؛ همبستگی | ||
| عنوان مقاله [English] | ||
| Investigating the ability to use the evaporation pan coefficient to calculate the evapotranspiration of the reference plant in Khorramabad region | ||
| نویسندگان [English] | ||
| Mobina Ahmadimoradi1؛ Mehri Saeedinia2؛ Aliheidar Nasrolahi2؛ Majid Sharifipour2 | ||
| 1M.Sc. Student of Irrigation and Drainage Engineering, Lorestan University, Lorestan; Iran. | ||
| 2Assistant Professor; Water Science and Engineering, Lorestan University, Lorestan, Iran. | ||
| چکیده [English] | ||
| Estimation of evapotranspiration of the reference plant is one of the important components in the design of irrigation systems and water management for irrigation of plants. In this study, four coefficients of evaporation pan Schneider (1992), Aurang (1998), Allen and Perot (1991) and Konica (1989) to estimate the reference evapotranspiration compared to the FAO-Penman-Monteith model using indices RMSE, MAE, AARE, MR and Spearman coefficient were evaluated. Information required for different coefficients for estimation (ETo) was collected from Khorramabad synoptic station. The results of statistical evaluation showed that in the daily period, Orang (1998) and Schneider (1992) pan coefficients with RMSE equal to 1.004 and 1.13 (mm.day-1), respectively, as the most appropriate and Allen and Prot coefficients ( 1991) and Konica (1989) were selected as the most unsuitable coefficients with RMSE of 1.83 and 1.47 (mm.day-1), respectively. On the other hand, the results of statistical evaluation for the 10-day period of Konica (1989) and Schneider (1992) pan coefficients with RMSE of 6.01 and 8.25 (mm.day-1), respectively, as the most appropriate coefficients and coefficients of Allen and Perot (1991) and Aurang (1998) were selected as the most unsuitable coefficients with RMSE of 13.90 and 9.43 (mm.day-1). Spearman correlation test also showed that the results of all coefficients have an acceptable correlation with the reference method. | ||
| کلیدواژه‌ها [English] | ||
| Correlation, Khorramabad, Pan coefficient, Reference evapotranspiration | ||
| مراجع | ||
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