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برآورد حقابۀ زیستمحیطی رودخانۀ قطورچای با استفاده از روشهای هیدرولوژیکی و اکوهیدرولوژیکی | ||
اکوهیدرولوژی | ||
مقاله 13، دوره 5، شماره 2، تیر 1397، صفحه 511-523 اصل مقاله (839.69 K) | ||
نوع مقاله: پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ije.2018.236417.653 | ||
نویسندگان | ||
سعید حبیبی آلاگوز1؛ محمدتقی ستاری* 2 | ||
1دانش آموختۀ کارشناس ارشد سازه های آبی، گروه مهندسی آب دانشکدۀ کشاورزی، دانشگاه ارومیه | ||
2استادیار، گروه مهندسی آب دانشکدۀ کشاورزی، دانشگاه تبریز | ||
چکیده | ||
تخصیص حقابۀ زیستمحیطی رودخانهها بهعنوان حلقۀ مفقوده در مدیریت پایدار منابع آب در ایران، ضرورتی انکارناپذیر برای حفظ اکوسیستمهای موجود در حوضههای آبریز کشور و همچنین جلوگیری از مرگ تالابها و دریاچههای منتهی به رودخانههاست. در این مقاله حقابۀ زیستمحیطی رودخانۀ قطورچای، که از زیرحوضههای مهم حوضۀ آبریز ارس است، با استفاده از چهار روش هیدرولوژیکی شامل تنانت، تسمن، شاخص تداوم جریان، اسمختین و دو روش اکوهیدرولوژیکی شامل تغییر منحنی تداوم جریان و مدل ذخیرۀ رومیزی مطالعه شد. از بین روشهای یادشده، روش تغییر منحنی تداوم جریان در کلاس اکولوژیکی C عمدتاً به علت سازگاری بیشتر با شرایط هیدرولوژیکی و اکولوژیکی نسبت به سایر روشها و با توجه به درنظرگرفتن محدودیتهای اکولوژیکی منطقۀ مطالعهشده و انعطافپذیری آن در ماههای کمآبی و پرآبی بهعنوان روش مناسب انتخاب شد. نتایج نشان داد برای حفظ حیات رودخانۀ قطورچای در کمترین وضعیت اکولوژیکی قابل قبول (کلاس مدیریت زیستمحیطی C)، باید شدت جریان متوسط سالیانه 94/6 مترمکعب بر ثانیه) معادل با 48 درصد جریان طبیعی رودخانه) در داخل رودخانه جریان داشته باشد. بررسیهای انجامشده نشان داد بهطور متوسط سالانه 5/6 مترمکعب در ثانیه آب از رودخانۀ قطورچای وارد رودخانۀ ارس میشود که این میزان تقریباً معادل با حقابۀ زیستمحیطی محاسبهشده است. | ||
کلیدواژهها | ||
تغییر منحنی تداوم جریان؛ حقابۀ زیستمحیطی؛ روشهای اکوهیدرولوژیکی؛ روشهای هیدرولوژیکی؛ رودخانۀ قطورچای | ||
عنوان مقاله [English] | ||
Assessment of Ghoturchay River Environmental Water Right Using Hydrological and Eco-Hydrological Methods | ||
نویسندگان [English] | ||
Saeid Habibi Alagoz1؛ Mohammad Taghi Sattari2 | ||
1M.Sc of hydraulic structure, Department of Water Engineering, Faculty of Agriculture Urmia University | ||
2Department of Water Engineering, Agriculture Faculty, University of Tabriz, Tabriz, Iran. | ||
چکیده [English] | ||
Allocation of rivers environmental water right as missing link in sustainable water resources management in Iran is undeniable necessity to preserve existing ecosystems in its catchments and preventing the death of wetlands and lakes which have been feeding by the rivers. In this paper environmental Water right for Ghoturchay River, important sub basin watershed of Aras river, have been studied using 4 hydrological Methods (Tennant, Tessman, flow duration indicators, Smakhtin), and 2 eco-hydrological methods (Flow Duration Curve Shifting (FDCs) and Desktop Reserve Model (DRM)). Among these methods, FDCs in ecological class C has been chosen as an appropriate method because it’s had more adaptation to hydrological and ecological conditions of studied region than other methods and considering ecological limitations and its flexibility in wet and dry months. In order to maintain the Ghoturchay River at minimum acceptable environmental status (i.e. Class C of environmental management), average annual flows of 6.94 m3/s (48% natural flow of the River) are to flow in it. This study showed that, average annual flows of 6.5 m3/s arrives at the Aras River, which is approximately equal to the environmental water rights. | ||
کلیدواژهها [English] | ||
Environmental water rights, Hydrological Method, Eco-hydrological Method, Flow Duration Curve Shifting, Ghoturchay River | ||
مراجع | ||
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