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ارزیابی جریان زیست‌‌محیطی رودخانه هررود لرستان با استفاده از روش‌های هیدرولوژیکی | ||
| اکوهیدرولوژی | ||
| مقاله 9، دوره 8، شماره 2، تیر 1400، صفحه 431-445 اصل مقاله (1.68 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2021.320387.1479 | ||
| نویسندگان | ||
| حسین یوسفی1؛ بابک شاهی نژاد* 2؛ علی کاکاوند3؛ مریم میر بیک سبزواری3؛ سیده حدیث شاهرخی3 | ||
| 1دانشیار گروه انرژی های نو و محیط زیست، دانشکدۀ علوم و فنون نوین دانشگاه تهران | ||
| 2استادیار گروه مهندسی آب، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه لرستان | ||
| 3دانشجوی دکتری سازه های آبی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه لرستان | ||
| چکیده | ||
| با توجه بحران جهانی آب، لزوم برنامهریزی در حفظ و بقای آب از مهمترین برنامههای توسعۀ هر کشور است. بهمنظور حفظ اکوسیستمهای موجود در حوضههای آبریز و همچنین، به دلیل کمبود منابع آب و توزیع نامناسب زمانی و مکانی بارش در کشور، باید نیازهای زیست‌‌محیطی رودخانهها مورد توجه قرار گیرد. در پژوهش حاضر، نیاز زیستمحیطیحوضۀ آبریز رودخانۀ هررود واقع در استان لرستان در دو ایستگاه هیدرومتری کاکارضا و دهنو طی دورۀ آماری بلندمدت 40 ساله با استفاده از روش‌های هیدرولوژیکی تنانت، تسمن، جریان پایۀ آبزیان، تحلیل منحنی تداوم جریان، تغییر منحنی تداوم جریان که از نرمافزار GEFC استفاده شد و اسمختین بررسی شد. آنالیز روند تغییرات آبدهی حوضۀ کاکارضا و دهنو با استفاده از آزمون گرافیکی منکندال بررسی شد و نتایج نشان داد نمیتوان روندی را برای رودخانۀ هررود در محل ایستگاههای هیدرومتری کاکارضا و دهنو متصور شد. بین روش‌های هیدرولوژیکی یادشده، روش تغییر منحنی تداوم جریان به علت در نظر گرفتن کلاسهای مدیریتی اکولوژیکی، توجه به نوسان‌های طبیعی جریان رودخانه و تلاش برای حفظ این نوسان‌ها در جریان زیست‌‌محیطی پیشنهادی خود در مقایسه با سایر روش‌های مطرحشده کارایی بیشتری دارد. نتایج نشان داد برای حفظ نیاز زیست‌‌محیطی رودخانۀ هررود در کلاس C (کمترین وضعیت اکولوژیکی قابل قبول) در ایستگاههای کاکارضا و دهنو بهترتیب 47/49 و 34/56 درصد متوسط جریان سالانه (بهترتیب 63/5 و 42/1 مترمکعب بر ثانیه) مورد نیاز است. توجه به این نکته ضروری است که روش‌های ارائهشده در پژوهش حاضر، راهحل قطعی برای ارزیابی جریان زیست‌‌محیطی نیستند، اما بهکارگیری این روشها در نبود اطلاعات اکولوژیکی لازم و بهمنظور برنامهریزی اولیه برای مدیران، مفید خواهد بود. | ||
| کلیدواژه‌ها | ||
| جریان سالانه؛ رودخانۀ هررود؛ کلاس های مدیریتی؛ منحنی تداوم جریان؛ نیاز زیست محیطی | ||
| عنوان مقاله [English] | ||
| Evaluation of ecological flow of Lorestan Herrud river using hydrological methods | ||
| نویسندگان [English] | ||
| Hossein Yousefi1؛ Babak Shahinejad2؛ Ali Kakavand3؛ M S3؛ S Sh3 | ||
| 1Department of Renewable Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran | ||
| 2Lorestan University | ||
| 3LU | ||
| چکیده [English] | ||
| In order to preserve the existing ecosystems in catchments and also due to lack of water resources and inappropriate temporal and spatial distribution of rainfall in the country, it is necessary to consider the environmental needs of rivers. In the present study, the environmental needs of the Herrud River catchment area located in Lorestan province in two hydrometric stations of Kakarza and Dehno during a long-term statistical period of 40 years using hydrological methods of tenant, tesman, aquatic basin flow, flow continuity curve analysis, change The flow continuity curve using GEFC software and smokhtin was investigated. The analysis of the trend of discharge changes in Kakarza and Dehno basins was investigated using Monkendal graphic test and the results showed that it is not possible to imagine a trend for Herrud river in the location of Kakarza and Dehno hydrometric stations. Among the mentioned hydrological methods, the method of changing the flow continuity curve due to considering ecological management classes, paying attention to the natural fluctuations of river flow and trying to maintain these fluctuations in its proposed environmental flow compared to other methods. These are more efficient. The results showed that in order to maintain the environmental needs of the Herrud River, in class C (lowest acceptable ecological status) in Kakarza and Dehno stations, 49.47% and 56.34% of the average annual flow (5.63%, respectively) And 1.42 cubic meters per second) is required. | ||
| کلیدواژه‌ها [English] | ||
| Annual flow, Environmental needs, Flow continuity curve, Herrud river, Management classes | ||
| مراجع | ||
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