کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4721573 1639392 2009 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysing streamflow variability and water allocation for sustainable management of water resources in the semi-arid Karkheh river basin, Iran
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Analysing streamflow variability and water allocation for sustainable management of water resources in the semi-arid Karkheh river basin, Iran
چکیده انگلیسی

This study provides a comprehensive spatio-temporal assessment of the surface water resources of the semi-arid Karkheh basin, Iran, and consequently enables decision makers to work towards a sustainable water development in that region. The analysis is based on the examination of statistical parameters, flow duration characteristics, base flow separation and trend analysis for which data of seven key gauging stations were used for the period of 1961–2001. Additionally, basin level water accounting was carried out for the water year 1993–94. The study shows that observed daily, monthly and annual streamflows are highly variable in space and time within the basin. The streamflows have not been changed significantly at annual scale, but few months have shown significant trends, most notably a decline during May and June and an increase during December and March. The major causes were related to changes in climate, land use and reservoir operations. The study concludes that the water allocations to different sectors were lower than the totally available resources during the study period. However, looking at the high variability of streamflows, changes in climate and land use and ongoing water resources development planning, it will be extremely difficult to meet the demands of all sectors in the future, particularly during dry years.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics and Chemistry of the Earth, Parts A/B/C - Volume 34, Issues 4–5, 2009, Pages 329–340
نویسندگان
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