اثر بی ثباتی نرخ ارز واقعی بر صادرات بخش پتروشیمی ایران (رهیافت مارکوف سوئیچینگ)

اقتصاد پولی مالی

مقاله 9، دوره 21، شماره 8، دی 1393، صفحه 202-231   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22067/pm.v21i8.45865

نویسنده

محمدمهدی برقی اسگویی^*

گروه اقتصاد دانشگاه تبریز

چکیده

چکیده
هدف اصلی این مقاله بررسی تأثیر بی ثباتی نرخ ارز واقعی بر صادرات محصولات بخش پتروشیمی ایران طی دوره ی 1389-1349 است. برای این منظور، ابتدا شاخص بی ثباتی نرخ ارز واقعی با استفاده از مدل (1و0)EGARCH تخمین زده شده است و سپس با استفاده از مدل های غیرخطی سوئیچینگ مارکوف، تأثیر شاخص بی ثباتی نرخ ارز واقعی بر صادرات محصولات بخش پتروشیمی ایران مورد بررسی قرار گرفته است.
نتایج حاصل از تخمین مدل سوئیچینگ مارکوف (MS-AR) حاکی از آن است که بی ثباتی نرخ ارز واقعی (در هر سه رژیم) و قیمت کالاهای صادراتی (در رژیم 1)، تأثیر منفی و معنی داری بر صادرات کالاهای پتروشیمی دارد. هم‏چنین متغیرهای تولید ناخالص داخلی جهان (در رژیم های 1 و 2)، تولید ناخالص داخلی ایران (در رژیم 1) و درجه باز بودن تجاری (در هر سه رژیم) دارای تأثیر مثبت و معنی داری بر صادرات کالاهای پتروشیمی می‏باشند.

کلیدواژه‌ها

صادرات کالاهای پتروشیمی؛ بی ثباتی نرخ ارز واقعی؛ EGARCH؛ مدل های سوئیچینگ مارکوف

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