اثرات بلندمدت و کوتاه‌مدت فضایی نابرابری درآمدی بر بهره‌وری کل عوامل تولید: شواهدی از استان‌های ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

استادیار گروه اقتصاد، واحد فیروزکوه، دانشگاه آزاد اسلامی، فیروزکوه، ایران

چکیده

هدف این پژوهش برآورد اثرات کوتاه‌مدت و بلندمدت فضایی نابرابری درآمدی بر بهره‌وری کل صنعتی در استان‌های ایران می‌باشد. بدین‌منظور از داده‌های پانل 31 استان ایران در دوره 98-1390 استفاده شد. ابتدا شاخص بهره‌وری کل مالم‌کوئیست با روش تحلیل پوششی داده‌ها برآورد شد؛ سپس اثرات بلندمدت و کوتاه‌مدت نابرابری درآمدی بر TFPدر قالب مدل‌های اقتصادسنجی فضایی ایستا و پویا ارزیابی گردید. یافته‌ها نشان می‌دهد اثر منفی نابرابری درآمدی بر بهره‌وری کل در بلندمدت به‌صورت محلی تأیید می‌شود، اما اثرات سرریز فضایی آن پایدار نیست. با توجه به نتایج اثر کل بلندمدت، نابرابری بر بهره‌وری کل صنعتی در بلندمدت اثر منفی و معنادار دارد. در کوتاه‌مدت، در مدل وقفۀ فضایی (SAR) اثرات محلی نابرابری بر TFP منفی و معنادار است، اما در مدل دوربین فضایی (SDM) این اثر منفی و غیرمعنادار است. اثرات کوتاه‌مدت سرریز فضایی و کل نابرابری درآمدی بر بهره‌وری کل صنعتی در مدل وقفۀ فضایی منفی و معنادار است، اما در مدل دوربین فضایی مثبت و غیرمعنادار است. درمجموع، با توجه به نتایج کوتاه‌مدت و بلندمدت، افزایش نابرابری درآمدی در استان‌های ایران اثر منفی و معنادار بر TFP در بلندمدت دارد.  

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Long-Run and Short-Run Income Inequality Spatial Effects on Total Factor Productivity: Iran’s Provinces Evidence

نویسندگان [English]

  • Mehdi Fathabadi
  • Masuod Soufimajidpour
Assistant Professor, Department of Economic, Firoozkooh Branch, Islamic Azad University, Firoozkooh, Iran
چکیده [English]

The purpose of this article is to estimate the short-run and long-run income inequality effects on the industrial total factor productivity in the provinces of Iran. For this purpose, panel data of 31 provinces of Iran are used for the period of 2011-2019. First, Malmquist’s total productivity index was estimated by data envelopment analysis. Then, the long-run and short-run effects of income inequality on TFP were evaluated by static and dynamic spatial econometric models. The findings show that the negative effect of income inequality on total productivity is locally confirmed in the long-run, but its spatial spillover effects are not sustainable. According to the results of the long-run total effect, inequality has a negative and significant effect on the industrial total productivity in the long-run. In the short-run, in the spatial lagged model (SAR), the inequality local effects on TFP are negative and significant, but in the spatial durbin model (SDM), this effect is negative and insignificant. The short-run spatial spillover and total effects of income inequality on industrial total productivity are negative and significant in the spatial lagged model, but positive and insignificant in the spatial durbin model. In sum, according to the short-run and long-run results, the increase in income inequality in Iran’s provinces has a negative and significant effect on TFP in the long-run.

کلیدواژه‌ها [English]

  • Income inequality
  • Total Productivity
  • Spatial Spillover Effects
  • Iran’s Provinces

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فصلنامه مطالعات اقتصادی کاربردی ایران
دوره 12، شماره 47
آبان 1402
صفحه 133-158

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