بررسی نقش انرژی در ارزش افزوده ی بخش کشاورزی در ایران

فصلنامه علمی -پژوهشی تحقیقات اقتصاد کشاورزی

مقاله 4، دوره 2، شماره 6، خرداد و تیر 1389، صفحه 45-60   

نویسندگان

فرزانه طاهری^{* 1}؛ سید نعمت اله موسوی²

¹مربی اقتصاد کشاورزی دانشگاه آزاد اسلامی واحد مرودشت.

²استادیار اقتصاد کشاورزی دانشگاه آزاد اسلامی واحد مرودشت .

تاریخ دریافت: 29 آذر 1394،  تاریخ پذیرش: 29 آذر 1394 

چکیده

در چهار دهه‌ی اخیر، مصرف انرژی در بخش کشاورزی ایران با نرخی فراتر از رشد تولید این بخش افزایش یافته و یکی از عامل‌های آن، پرداخت یارانه‌ی انرژی است. با توجه به بار مالی بالای انرژی برای دولت، تجدید‌نظر در الگوی استفاده از انرژی ضرورت دارد. این مطالعه با هدف تحلیل نقش انرژی در ارزش افزوده‌ی بخش کشاورزی صورت گرفته و روش مورد استفاده شامل برآورد تابع تولید، علیت و تغییرات شدت مصرف انرژی می باشد. داده های مورد استفاده به صورت سری زمانی در سال های 84-1353 می باشد. نتایج تخمین تابع تولید نشان داد که انرژی بر تولید بخش کشاورزی اثر معنی دار داشته و 10 درصد افزایش در مصرف انرژی، تولید را به میزان 1/4 درصد افزایش می دهد. همچنین، مشخص شد که مصرف انرژی بر ارزش-افزوده ی بخش کشاورزی و زیربخش های آن (به جز زیر بخش جنگلداری) اثر مثبت دارد، اما ارزش افزوده اثری بر مصرف انرژی ندارد. همچنین، یافته ها نشان داد که هر چند کاهش قیمت انرژی موجب افزایش شدت مصرف انرژی شده، اما رشد فناوری و جایگزینی نهاده های سرمایه و نیروی کار می تواند موجب کاهش شدت مصرف انرژی در بخش کشاورزی شود.
 

کلیدواژه‌ها

بخش کشاورزی؛ تولید؛ علیت؛ شدت انرژی؛ ارزش افزوده

عنوان مقاله [English]

Analyzing the Role of Energy in the Iranian Agricultural Sector

نویسندگان [English]

F. Taheri¹؛ S.N. Mousavi²

چکیده [English]

During last four decades, growth of energy use in the Iranian agricultural sector has exceeded its production growth. Energy subsidy is believed to be one of the reasons. Because of the high financial burden of energy subsidy for the government, it is necessary to reconsider the energy use pattern. The objective of this study is to analyze the role of energy in the agricultural sector. The applied concepts are production function, causality and changes in energy intensity. Dataset used were time series covering 1353-84 (1974-2005) periods. Results of the production function estimate showed significant impact of energy on agricultural production and 10 percent increase in energy use was expected to increase agriculture production by 4.1 percent. It was also found that energy consumption had a positive impact on various subsectors (except forestry) value added but the reverse relation was not confirmed. The findings also showed that decrease in real price of energy caused an increase in energy intensity, however, technology progress and substitution of capital and labor may decrease the energy intensity.
 

کلیدواژه‌ها [English]

energy, Agricultural Sector, Production, Causality, Energy Intensity

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