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نوع مقاله : مقاله پژوهشی
10.22034/wmji.2023.710723
چکیده
این تحقیق در دشت اردبیل باهدف بررسی وضعیت کمی و پایداری منابع مختلف تأمین نیاز آبی محصولات سیبزمینی، گندم، جو و یونجه انجام شد. نیاز آبی این محصولات بهعنوان کشتهای اصلی دشت با استفاده از نرمافزار CROPWAT تعیین شد. مؤلفههای مختلف رد پای آب مجازی شامل VWFblue، VWFgreen، VWFgrey و همچنین شاخصهای تنش آب از منظر تولید (WSI) و مصرف آب (CWSI) محاسبه گردید. نتایج نشان داد که محصول سیبزمینی با مصرف سالانه حدود 84 میلیون مترمکعب (66 درصد) بیشترین سهم را در شاخص رد پای آب مجازی (VWF) دشت اردبیل به خود اختصاص داده است. پس از آن محصولات جو، یونجه و گندم به ترتیب با 21، 2/12 و 11 میلیون مترمکعب از شاخص رد پای آب مجازی (VWF) در رتبههای بعدی هستند. شاخصهای WSIgreen، WSIblue و WSIgrey به ترتیب با مقادیر 5/0، 4/6 و 1/0- محاسبه شدند و کمبود آب مربوطه به ترتیب بهعنوان تنش آبی متوسط و تنش آبی شدید ارزیابی نمودند. با توجه به محدودیتهای منابع آب در دشت اردبیل، لازم است از منظر تولید، بهرهوری آب کشاورزی منطقهای بهبود یابد و توسعه و حفاظت از منابع آبی برای اطمینان از کمیت و کیفیت آب موردنیاز در اولویت قرار گیرد.
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