کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4393138 1618259 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of water requirements of the Gavkhuni wetland, Iran: A hydrological approach
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Determination of water requirements of the Gavkhuni wetland, Iran: A hydrological approach
چکیده انگلیسی


• We apply hydrological approaches for measuring a required base flow for wetlands.
• The effects of the dry periods are considered on hydrological regime of the wetland.
• Finally a base flow is introduced which provides minimum water quality and quantity.

This study compared three hydrological methods – low flow frequency analysis, flow duration curve (FDC), and concentration-discharge (C-D) modeling – to determine the water requirement of the Gavkhuni wetland located in an arid region of Iran. Due to the effects of water impounding upstream on the hydrological regime of the Gavkhuni's inflow after construction of the Zayandehrud dam, none of the methods produced satisfactory results.Consequent modification of the hydrological regime of the wetland's inflow using a scaling process allowed all the methods except low flow frequency analysis to dependably estimate the base flow for the wetland. The results of the C–D method revealed that this method can provide a minimum health condition from the water quality point of view, while the results of the FDC demonstrated that not only the inflow estimated using this method can supply minimum conditions in terms of water quality parameters, but it also covers most areas of the wetland, based on the results of hydraulic modeling.The results reveal that the hydrological methods implemented in this study can dependably estimate environmental water allocation for wetlands in arid and semi-arid regions when there is no detailed knowledge about the biological requirements of the wetlands' biota.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Arid Environments - Volume 98, November 2013, Pages 27–40
نویسندگان
, ,