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بررسی تأثیر شاخص‌های اکوهیدرولیکی در تحلیل رژیم جریان زیست‌محیطی و شبیه‌سازی مطلوبیت زیستگاه با کاربرد مدل River2D با تکیه بر باززنده‌سازی اکولوژیکی رودخانۀ زرین گل | ||
| اکوهیدرولوژی | ||
| مقاله 17، دوره 6، شماره 1، فروردین 1398، صفحه 205-222 اصل مقاله (1.3 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2019.266895.962 | ||
| نویسندگان | ||
| محمدحسن نادری1؛ مهدی ذاکری نیا* 2؛ میثم سالاری جزی3 | ||
| 1کارشناس ارشد مهندسی منابع آب، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| 2دانشیار گروه مهندسی آب، دانشکدۀ مهندسی آب و خاک، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| 3استادیار گروه مهندسی آب، دانشکدۀ مهندسی آب و خاک، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| چکیده | ||
| علم جریان زیست‌محیطی، ابزاری رایج برای ارزیابی پیامدهای تغییر رژیمهای جریان بر اکوسیستمهای آبی و تأمین حداقل جریان در حفاظت از گونههای آبزی است. هدف از پژوهش حاضر، فراهم‌کردن ملزومات برای مهیاشدن ابزار ارزیابی و طراحی پروژههای احیا و باززنده‌سازی زیستگاه رودخانة زرینگل با استفاده از شاخص‌های اکوهیدرولیکی، هیدرومورفولوژیکی مبتنی بر شبیه‌سازی مطلوبیت زیستگاه است. به این منظور بر پایة چارچوب تحقیق، پس از مطالعات میدانی و توسعة مدل مطلوبیت زیستگاه برای گونة هدف، شبیه‌سازی هیدرودینامیکی جریان صورت گرفت و در نهایت رژیم جریانات اکولوژیک استخراج شد. نتایج نشان داد مدل River2D با برقراری ارتباط بین خصوصیات جریان مورد نیاز گونة سیاهماهی C.Capoeta gracilis و استفاده از روابط هیدرولیکی و هیدرولوژیکی، بیشترین و کمترین رژیم جریان مورد نیاز برای حفظ اکوسیستم رودخانة زرینگل را با توجه به نیازهای اکولوژیکی در ماههای فروردین و مهر به‌ترتیب معادل 09/5 و 89/0 مترمکعب بر ثانیه، با میانگین 79/1 مترمکعب بر ثانیه (معادل 84 درصد جریان طبیعی رودخانه) برآورد میکند. طبق نتایج تحقیق حاضر، در مطالعات زیست‌محیطی منابع آب و مهندسی رودخانه، مدل دوبعدی هیدرودینامیکی River2D، قادر به شبیه‌سازی جریان، مدلسازی مطلوبیت زیستگاه گونة هدف و پیشبینی دینامیک زیستگاه برای محافظت از زیستگاه مناسب ماهی در اکوسیستمهای رودخانهای است. محاسبة جریان زیست‌محیطی میتواند تخمین مناسبی برای ارزیابی پاسخ اکولوژیکی رودخانه به تغییرات مورفولوژیکی ایجادشده بر اثر فرایندهای هیدرولوژیکی و هیدرولیکی باشد. | ||
| کلیدواژه‌ها | ||
| زرینگل؛ مساحت قابل استفادة وزنی؛ مطلوبیت زیستگاه؛ River2D | ||
| عنوان مقاله [English] | ||
| Investigation of Ecohydraulic Indices in Environmental Flow Regime and Habitat Suitability Simulation Analysis using River2D Model with Relying on the Restoration Ecological in Zarrin-Gol River | ||
| نویسندگان [English] | ||
| Mohammad Hasan Naderi1؛ Mehdi Zakerinia2؛ Meysam Salarijazi3 | ||
| 1Water Resources Engineering, Water Engineering Department, College of Water and Soil Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 2Associated Professor, Water Engineering Department, College of Water and Soil Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 3Assistant Professor, Water Engineering Department, College of Water and Soil Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| چکیده [English] | ||
| Environmental flow science is a current tool for assessing the outcome of changing the flow regime of aquatic ecosystems and providing a minimum flow of protection aquatic species. The purpose of this research is to provide the essentials in preparing the tools for the assessment and design of restoration and regeneration projects for Zarrin-Gol river habitats using ecohydraulic and hydromorphological indices based on the habitat suitability simulation. In this regard based on the research framework, after the field studies and the development of the habitat suitability model for the target species, the hydrodynamic simulation of the flow was carried out and eventually the ecological flow regime was extracted. The results showed that River2D model by connecting the flow requirement characteristics of C.Capoeta gracilis and using hydraulic and hydrological relations, would have the maximum and minimum flow regime required to maintain the Zarrin-Gol river ecosystem according to ecological needs in the months of April and October is estimated to order equivalent to 5.09 and 0.89 m3/s, with average 1.79 m3/s (equivalent 84 percent of natural stream of the river). Based on the results of this study, in environmental studies of water resources and river engineering, the two-dimensional hydrodynamic River2D model is able to simulate flow, modeling habitat suitability of target species and predict the dynamics of habitats to protect the proper habitat of fish in river ecosystems. The calculation of the environmental flow can be an appropriate estimate for the ecological response of the river to the morphological changes caused by hydrological and hydrological processes. | ||
| کلیدواژه‌ها [English] | ||
| Zarrin-Gol, Weighted Usable Area, Habitat Suitability, River2D | ||
| مراجع | ||
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