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واسنجی و اعتبارسنجی مدل WEAP در شبیه سازی اثر تغییر سیستم های آبیاری روی پاسخ هیدرولوژیک حوضۀ آبریز اهرچای | ||
| اکوهیدرولوژی | ||
| مقاله 15، دوره 3، شماره 3، مهر 1395، صفحه 477-490 اصل مقاله (1.5 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2016.60050 | ||
| نویسندگان | ||
| مریم محمدپور1؛ کامران زینال زاده* 2؛ وحید رضاوردی نژاد3؛ بهزاد حصاری2 | ||
| 1دانشجوی دکتری مهندسی منابع آب، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه ارومیه | ||
| 2استادیار گروه مهندسی آب، پژوهشکدۀ مطالعات دریاچۀ ارومیه، دانشگاه ارومیه | ||
| 3استادیارگروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه ارومیه | ||
| چکیده | ||
در این مطالعه کاربرد مدل WEAP (روش رطوبت خاک) برای شبیهسازی رفتار هیدرولوژیک در حوضۀ آبریز اهرچای بررسی شد. با توجه به توسعۀ سیستمهای آبیاری تحت فشار در این حوضه از سال 1384، دو مدل برای دو دورۀ قبل (1377ـ ۱۳۸۵) و بعد (۱۳۸۵ـ ۱۳۹۲) از توسعۀ سیستمهای یادشده اجرا شد. روش آبیاری در مدل نخست، آبیاری سطحی و در مدل دوم آبیاری تحت فشار و آبیاری سطحی بود. اطلاعات ایستگاههای هیدرومتری تازهکند (خروجی حوضه) و اورنگ (بالادست سد ستارخان)، در چهار سال نخست هر دوره برای واسنجی مدل و چهار سال دوم برای اعتبارسنجی مدل در نظر گرفته شد. مقادیر شاخصهای آماری ضریب تعیین، نش-ساتکلیف و شاخص تطابق برای واسنجی مدل نخست (1377 تا1380) در ایستگاه اورنگ به‌ترتیب برابر 95/0، 82/0 و 98/0 و در ایستگاه تازهکند به‌ترتیب برابر 96/0، 80/0 و 97/0 به‌دست آمد. مقادیر شاخصها در واسنجی مدل دوم (1385ـ ۱۳۸۹) برای ایستگاه اورنگ برابر 95/0، 85/0 و 99/0 و برای ایستگاه تازهکند برابر 96/0، 83/0 و 98/0 تعیین شد. مقادیر شاخصها در اعتبارسنجی مدل نخست (1381ـ 1385) برای ایستگاه اورنگ برابر 98/0، 88/0 و 99/0 و برای ایستگاه تازهکند برابر 96/0، 87/0 و 99/0 تعیین شد و در مدل دوم (1389ـ ۱۳۹۲) برای ایستگاه اورنگ برابر 96/0، 86/0 و 99/0 و برای ایستگاه تازهکند برابر 97/0، 78/0 و 97/0 به‌دست آمد. | ||
| کلیدواژه‌ها | ||
| اعتبارسنجی؛ تغییر سیستم های آبیاری؛ حوضۀ آبریز اهرچای؛ روش رطوبت خاک؛ مدل WEAP؛ واسنجی | ||
| عنوان مقاله [English] | ||
| WEAPModel Calibration and Validation in Simulating the Impact of Irrigation Systems Change on the Ahar-Chai Basin Hydrological Response | ||
| نویسندگان [English] | ||
| Maryam Mohamadpoor1؛ Kamran Zeinalzade2؛ Vahid Rezaverdineghad3؛ Behzad Hesari2 | ||
| چکیده [English] | ||
| In this study, application ofWEAP model (soil moisture method) have been investigated for simulating hydrological behavior in Ahar-Chai basin. According to the development of pressurized irrigation systems in this basin, since 2005, two models were carried out for two periods, pre-pressurized period (1998-2006) and pressurized period (2006-2013). Irrigation method in first model was surface irrigation, and in second model weresurface and pressurized irrigation. Tazekand (the basin outlet point) and Orang (upstream of the Satarkhan dam) hydrometric stations data were considered for calibration (4 year) and validation (4 year) for both models.The coefficient of determination, Nash-Sutcliffe Efficiency (NSE) and the Index of Agreement were used as statistical indices for calibration and validation of both models. The calibration of the indices for first model (1998 to 2001) in Orang station were determined 0.95, 0.82 and 0.98 respectively, and in Tazekand station werecalculated 0.96, 0.80 and 0.97, respectively. The Calibration values of the indices in the second model (2006 to 2010) in Orang station were determined 0.95, 0.85 and 0.99 respectively, and in Tazekand station were determined 0.96, 0.83 and 0.98 respectively. The validation values of indices for first model (2002 to 2006) in Orang station were determined 0.98, 0.88 and 0.99, respectively, and in Tazekand station were calculated 0.96, 0.87 and 0.99, respectively. The validation values of the indices in the second model (2010 to 2013) in Orang station were determined 0.96, 0.86 and 0.99, respectively, and in Tazekand station were determined 0.97, 0.78 and 0.97, respectively. | ||
| کلیدواژه‌ها [English] | ||
| Ahar Chai basin, calibration, Irrigation systems changes, Soil moisture method, WEAP model, validation | ||
| مراجع | ||
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