تعیین ارزش اقتصادی آب در تولید برنج مرغوب و پرمحصول (مطالعه موردی دشت بهشهر استان مازندران)
محورهای موضوعی : فصلنامه علمی -پژوهشی تحقیقات اقتصاد کشاورزیحمید امیرنژاد 1 , سکینه فاضلیان 2 , سید علی حسینی یکانی 3
1 - دانشیار گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
2 - دانشجوی کارشناسی ارشد گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری.
3 - ستادیار گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری.
کلید واژه: برنج, آب, برنامهریزی ریاضی اثباتی, ارزش اقتصادی, دشت بهشهر,
چکیده مقاله :
مسئله اصلی مدیریت منابع آب در کشور، ایجاد تعادل بین عرضه و تقاضای آب میباشد و در برقراری این تعادل، قیمت یا ارزش آب نقش تعیینکنندهای دارد. در این راستا این مطالعه، به تعیین ارزش اقتصادی آب زیرزمینی برای دو رقم برنج دانهبلند مرغوب و دانهبلند پرمحصول می‌پردازد. داده‌های لازم به روش نمونهگیری تصادفی از تعداد 205 کشاورز برنجکار دشت بهشهر استان مازندران که برای آبیاری محصول خود تنها از آب استحصال شده از چاه استفاده میکنند، در سال زراعی 94-1393 گردآوری شده است. در تعیین قیمت سایه‌ای آب برای این دو رقم برنج در روش برنامهریزی ریاضی اثباتی (PMP)، با توجه به سطح آب در دسترس، کشاورزان مورد مطالعه به چهار گروه تقسیم شدند. نتایج نشان دادند در سناریوهای کاهش 5 تا 40 درصدی مقدار آب، قیمت آب بهترتیب در گروه نخست (بیش‌ترین آب در دسترس) تا چهارم (کم‌ترین مقدار آب در دسترس) برابر با 1810، 4370، 4770 و 4370 ریال برآورد شده که بهطور میانگین، قیمت آب برآوردشده 3830 ریال بدست آمده است. با توجه به نتایج این پژوهش پیشنهاد میشود با توجه به اینکه مهمترین هدف در راستای توسعه اقتصادی بخش کشاورزی استفاده بهینه و صرفهجویی در مصرف آب است، قیمتگذاری و دریافت آببها در سطح معادل با ارزش اقتصادی ضروری میباشد.
طبقهبندی JEL: Q1, Q11,Q12, Q25
The main problem of water resources management in the country, a balance between water supply and demand and to maintain this balance, the price or value of water is decisive role. The present study to determine the economic value of groundwater, for the long grain rice and long grain quality is high yielding. Information necessary to achieve the purpose of the survey of 205 rice farmers water their crops only for plain city water extracted from wells may have been collected in the crop year 1393-94. In determining the shadow price of water for the two varieties of rice in the way of positive mathematical programming (PMP), depending on the level of water available, farmers were divided into four groups studied and results showed that under scenarios of reduced 5 to 40 percent the amount of water, water prices respectively, in the first group (the most available water) and fourth (lowest available water) of 1810, 4370, 4770 and 4370 Rials was calculated to 3830 Rials is estimated at an average price of water is obtained
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