بازنگری رابطهی میان شدت انرژی و ارزش افزوده در بخش کشاورزی ایران؛ شواهدی جدید بر پایه رهیافت خودرگرسیون برداری پانلی
الموضوعات : فصلنامه علمی -پژوهشی تحقیقات اقتصاد کشاورزی
معین نقشبندی
1
(فارغ التحصیل کارشناسی ارشد، اقتصاد انرژی،دانشکده علوم اقتصادی و اداری، دانشگاه مازندران)
یوسف محنت فر
2
(استادیار، دانشکده علوم اقتصادی و اداری، دانشگاه مازندران)
سعید راسخی
3
(استاد، دانشکده علوم اقتصادی و اداری، دانشگاه مازندران)
الکلمات المفتاحية: شدت مصرف انرژی, رهیافت خودرگرسیون برداری پانلی, ارزشافزودهی بخش کشاورزی,
ملخص المقالة :
مقدمه و هدف: از کشاورزی به عنوان یکی از بخشهای مهم در رشد و توسعه یاد میشود. از اینرو، بررسی رابطه میان ارزش افزودهی بخش کشاورزی و تعیینکنندههای آن مورد توجه محققین و سیاستگذارن اقتصادی بوده است. در این میان، ارتباط متقابل میان شدت مصرف انرژی در بخش کشاورزی و ارزشافزودهی آن یکی از موارد مناقشهآمیز است. مواد و روشها: پژوهش حاضر با به کارگیری رهیافت خودرگرسیون برداری پانل رابطهی علّی میان متغیرهای مذکور را در استانهای ایران طی سالهای 1394 – 1384 مورد بازبینی قرار دادهاست. یافتهها: نتایج نشان میدهد یک رابطهی دو طرفه میان شدت مصرف انرژی و ارزش افزوده در بخش کشاورزی برقرار است. تحلیل توابع واکنش آنی نشاندهنده پاسخ مثبت شدت مصرف انرژی به تکانهی ارزش افزوده است، اما ارزش افزودهی بخشکشاورزی در رویارویی با تکانهی شدت مصرف انرژی واکنش منفی نشان میدهد. با استفاده از تجزیهی واریانس مشخص شد مقدار اندکی از تغییرات ارزش افزودهی بخش کشاورزی توسط شدت مصرف انرژی توضیح داده میشود. در عین حال، ارزش افزوده سهم نسبی بیشتری در تغییرات شدت مصرف انرژی دارد. بحث و نتیجهگیری: پیشنهاد میشود که جهت استفادهی بهتر از انرژی در بخش کشاورزی، بهجای سیاستهای مبتنی بر کاهش کمی در مصرف انرژی، در زمینه افزایش کارایی و بهرهوری انرژی سرمایهگذاریهای لازم صورت گیرد.
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