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تأثیر عدم قطعیت سیاست اقتصادی بر انتشار دیاکسید کربن: رهیافت گشتاورهای تعمیمیافته (GMM) | ||
نشریه محیط زیست طبیعی | ||
دوره 75، شماره 4، آبان 1401، صفحه 667-681 اصل مقاله (786.26 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/jne.2022.340270.2407 | ||
نویسنده | ||
محبوبه جعفری* | ||
گروه اقتصاد، دانشکده اقتصاد، مدیریت و علوم اجتماعی، دانشگاه شیراز، شیراز، ایران | ||
چکیده | ||
در حالی که مطالعات متعددی بر شناسایی عوامل مؤثر بر انتشار دی اکسیدکربن متمرکز شده اند، بررسی نقش عدم قطعیت سیاست اقتصادی (EPU) بر کیفیت محیط زیست در ادبیات محیط زیست-انرژی کمتر مورد بررسی قرار گرفته است. در این راستا، هدف این مطالعه، بررسی چگونگی اثرگذاری عدم قطعیت سیاست اقتصادی بر انتشار CO2 در گروه کشورهای در حال توسعه با بیشترین میزان آلایندگی می باشد. بهعلاوه، اثر تعدیل کنندگی عدم قطعیت سیاست اقتصادی بر انتشار CO2 از کانال مصرف انرژی تجدیدپذیر و تجدیدناپذیر نیز مورد بررسی قرار گرفته است. نتایج بیانگر وجود رابطه علّیت دو طرفه بین عدم قطعیت سیاست اقتصادی و انتشار CO2 است. سپس برای برآورد مدل، روش گشتاورهای تعمیمیافته (GMM) برای حل مشکل درون زایی بکار گرفته شده است. نتایج حاصل از برآورد الگو بیانگر این است که افزایش عدم قطعیت سیاست اقتصادی به تخریب کیفیت محیط زیست در نمونة مورد مطالعه منتهی شده است. بهعلاوه، نتایج نشان دهندة این است که یک درصد افزایش در مصرف انرژی تجدیدپذیر موجب کاهش انتشار CO2 به اندازة 0/026 درصد شده است. اگرچه که افزایش مصرف انرژی تجدیدناپذیر به اندازة یک درصد به افزایش انتشار CO2 به اندازة 0/98 درصد منتهی شده است. همچنین نتیجة اثر متقابل عدم قطعیت سیاست اقتصادی و مصرف انرزی تجدیدناپذیر گویای آن است که افزایش EPU به کاهش مصرف انرژی تجدیدناپذیر و در نتیجه کاهش انتشار CO2 در طول دورة 2004 تا 2020 منتهی شده است. | ||
کلیدواژهها | ||
انتشار دیاکسیدکربن؛ عدم قطعیت سیاست اقتصادی؛ انرژی تجدیدپذیر؛ انرژی تجدیدناپذیر | ||
عنوان مقاله [English] | ||
Impact of economic policy uncertainty on CO2 emissions: approach of the generalized method of moments (GMM) | ||
نویسندگان [English] | ||
Mahboubeh Jafari | ||
Department of Economics, Faculty of Economics, Management and Social Sciences, Shiraz University, Shiraz, Iran | ||
چکیده [English] | ||
While a great number of researches have focused on identifying the factors affecting carbon emissions, the role of economic policy uncertainty (EPU) on environmental quality has been less studied in the energy-environment literature. In this regard, the purpose of this study is to investigate how economic policy uncertainty affects CO2 emission in the group of developing countries with the highest levels of pollution. In addition, the moderating effect of economic policy uncertainty on CO2 emissions from renewable and non-renewable energy channels has been studied. The results show that there is bidirectional causality between economic policy uncertainty and CO2 emissions. Then, a panel data model by the Generalized Method of Moments (GMM) is estimated to address the endogeneity problem. We find that increase in economic policy uncertainty has led to higher CO2 emissions. Furthermore, our findings underscore that 1 percent increase in the consumption of renewable energy has led to decrease CO2 emissions by 0.026 percent. In contrast, the consumption of nonrenewable energy has led to increase in CO2 emissions by 0.98 percent. Also, the results show that increase in economic policy uncertainty has led to a reduction in non-renewable energy consumption and thus a reduction in CO2 emissions during the period 2004 to 2020. | ||
کلیدواژهها [English] | ||
CO2 emission, Economic policy uncertainty, Renewable energy, Nonrenewable energy | ||
مراجع | ||
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