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کاربرد مدل LAPSUS در برآورد رواناب و رسوب در حوضۀ زوجی کاخک شهرستان گناباد | ||
اکوهیدرولوژی | ||
مقاله 9، دوره 3، شماره 1، فروردین 1395، صفحه 107-119 اصل مقاله (827.71 K) | ||
نوع مقاله: پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ije.2016.59194 | ||
نویسندگان | ||
مسعود عشقی زاده1؛ محمد تقی دستورانی2؛ حمید رضا عظیم زاده3 | ||
1دانش آموختۀ دکتری علوم و مهندسی آبخیزداری دانشگاه یزد | ||
2دانشیار، دانشکدۀ منابع طبیعی و کویرشناسی، دانشگاه یزد | ||
3استاد، دانشکدۀ منابع طبیعی و محیط زیست، دانشگاه فردوسی مشهد | ||
چکیده | ||
در این تحقیق مدل LAPSUS بهعنوان یک مدل برآورد رواناب و فرسایش و رسوب برای نخستینبار در ایران در حوضۀ زوجی کاخک شهرستان گناباد معرفی و اجرا شده است. مدل LAPSUS یک مدل تغییر چشمانداز است که قادر به محاسبۀ حجم رواناب، فرسایش و رسوب طی چهار مرحله محاسبۀ بارش مؤثر، روندیابی جریان سطحی، محاسبۀ ظرفیت حمل رسوب و محاسبۀ میزان حمل رسوب است. ورودیهای این مدل شامل مدل رقومی ارتفاع، مقدار بارش، ضریب رواناب، عامل همگرایی، ضرایب ویژۀ دبی و شیب و عامل فرسایندگی و تهنشست است. نتایج نشان داد مدل LAPSUS قادر است حجم رواناب و فرسایش و رسوب روندیابی شده از وقایع را بهصورت نقشههای رواناب و فرسایش و رسوب با فرمت رستری بهخوبی نمایش دهد. نتایج اعتبارسنجی نیز نشان داد مقدار RMSE نرمالشده برای مقادیر رواناب 5/3 درصد و برای فرسایش 6/2 درصد است. همچنین ضریب تبیین برای دادههای رواناب 99 درصد و برای دادههای فرسایش 97 درصد است. بر این اساس با توجه به ورودیهای در دسترس و محدود، این مدل میتواند بهعنوان یک مدل برآورد رواناب، فرسایش و رسوب برای ایران معرفی شود. | ||
کلیدواژهها | ||
روندیابی؛ ظرفیت حمل رسوب؛ مدل تغییر چشمانداز؛ مدل LAPSUS | ||
عنوان مقاله [English] | ||
The Use of LAPSUS Model to Estimate the Runoff and sedimentin the Kakhk paired catchment of Gonabad | ||
نویسندگان [English] | ||
Masoud Eshghizadeh1؛ Mohamad taghi Dastoorani2؛ Hamhd reza Azimzade3 | ||
1Ph.D. of WatershedScience andEngineering, Yazd University | ||
2Associate Prof Department of Watershed Management Engineering, Faculty of Natural Resources, Yazd University, Yazd, Iran | ||
3Professor,Department of Watershed Management,Faculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Mashhad, Iran | ||
چکیده [English] | ||
In this research introduced the LAPSUS model as a runoff, erosion and sediment model in Iran. This model for the first time has operatedin Iran at Kakhk paired catchment of Gonabad. LAPSUS model is a Landscape Evolution Model that can estimate the runoff, erosion and sediment at the four stage include: calculate the effective rainfall, runoff routing, calculate the capacity of sediment transport and calculate the rate ofsediment transport. The input to the models include DEM, amount of rainfall, runoff coefficient, convergence factor, discharge and slope exponent, erodibility and sedimentation potential factors.The result showed that the LAPSUS model is able to show runoff, erosion and sediment as a raster maps for each rainfall event. The result showed LAPSUS model has a normalized RMSE of 3.5 percent for runoff and 2.6 percent for sediment. Also,Coefficientof Determinationis 99 percent for runoff and 97 percent for erosion and sediment. On this basis, due to limited and available inputs, this model can be introduced as a runoff, erosion and sediment model in Iran. | ||
کلیدواژهها [English] | ||
LAPSUS model, LEM model, Routing, Sediment transport capacity | ||
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