برآورد قیمت تمام شده و ارزش اقتصادی آب در اراضی زراعی تحت پوشش آب‌بندان‌ها (مطالعه موردی محدوده‌ی پروژه البرز)

Subject Areas : Environmental policy and management

مجتبی نبی زاده ذوالپیرانی ¹ , حمید امیرنژاد ² , علی شاهنظری ³

1 - دانشجوی دکتری اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
2 - دانشیار گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
3 - دانشیار گروه مهندسی آبیاری، دانشگاه علوم کشاورزی و منابع طبیعی

Received: 2016-02-22 Accepted : 2018-01-22 Published : 2018-03-01

Keywords: بخش کشاورزی, ارزش اقتصادی آب, آب بندان, پروژه البرز, قیمت آب,

Abstract :

قیمت گذاری آب یکی از مهم­ترین ابزار مدیریت منابع آب می­باشد که می­تواند به تخصیص بهینه آن در بخش کشاورزی منجر شود. در این راستا، مطالعه حاضر با  استفاده از روش­های اقتصاد مهندسی و تابع تولید به برآورد و مقایسه قیمت تمام شده و ارزش آب در اراضی زراعی تحت پوشش آب­بندان­های منتخب در محدوده پروژه البرز در استان مازندران می­پردازد. به این منظور، با استفاده از روش نمونه­گیری تصادفی ساده حجم نمونه جهت برآورد ارزش اقتصادی آب در محصولات زراعی زیر حوضه آب­بندان­های منتخب 198 تعیین شد و داده­های مورد نیاز، از طریق تکمیل پرسشنامه و مطالعات میدانی در سال زراعی 93- 1392 جمع­آوری گردید.پس از بررسی نتایج توابع تولید مختلف، تابع تولید ترانسندنتال به عنوان تابع تولید مناسب انتخاب و ارزش اقتصادی آب برای محصول برنج در حوضه آب­بندان­های منتخب 19065 ریال به ازای هر مترمکعب محاسبه گردید.همچنین، قیمت تمام شده آب به ازای هر مترمکعب در آب­بندان­های منتخب با نرخ بهره 22 درصد 868 ریال و با نرخ بهره 12 درصد 394 ریال به­دست آمد. مقایسه قیمت تمام شده آب با ارزش اقتصادی آن در آب­بندان­های منتخب، نشان دهنده بیشتر بودن ارزش اقتصادی آب از قیمت تمام شده آن و تفاوت بسیار زیاد هر دوی آن­ها با آب­بهای پرداختی کشاورزان می­باشد. در نتیجه شکاف موجود بین قیمت واقعی آب و قیمت پرداختی کشاورزان باید به­وسیله قیمت گذاری اقتصادی آب پر شود.

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