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食品通胀之谜:探究新兴金砖国家经济政策不确定性与食品价格之间的不对称关系

The Puzzle of Food Inflation: Exploring the Asymmetric Nexus Between Economic Policy Uncertainty and Food Prices in the Expanded BRICS Countries.

作者信息

Wang Yajun, Luan Shilin, Ali Sajid, Nazar Raima, Anser Muhammad Khalid

机构信息

Business School, The University of Sydney, Sydney, Australia.

Social Science, University of California, Irvine, CA, USA.

出版信息

Food Nutr Bull. 2025 Mar;46(1):51-62. doi: 10.1177/03795721241301190. Epub 2025 Jan 12.

Abstract

Fluctuations in economic policy often create ripple effects that can significantly impact commodity prices, including those of essential food items, with potential consequences for food security. The 5 emerging nations outlined as BRICS (Brazil, Russia, India, China, and South Africa) have most recently extended by including 4 new members (Egypt, Ethiopia, Iran, and the UAE) on January 1, 2024. Additionally, Argentina and Saudi Arabia are anticipated to join the group soon. This enlargement will alter the geopolitical scenario, potentially fostering fresh collaboration and competition dynamics. This expansion will reshape the geopolitical landscape, possibly leading to new cooperation and competition dynamics. The core objective of the present work is to measure how economic policy uncertainty asymmetrically influences food prices in the expanded BRICS countries. Previous investigations have primarily relied on panel data methods, often overlooking heterogeneities in the policy uncertainty-food prices nexus across different countries. Conversely, this research applies the Quantile-on-Quantile method, which permits a more exact examination, providing a thorough worldwide overview and specific insights tailored to each country. The results indicate a significant increase in food prices due to economic policy uncertainty throughout different quantile ranges in the chosen economies. These outcomes accentuate the essentiality for policymakers to execute all-inclusive appraisals and effectively manage approaches connected to economic policy uncertainty and food inflation.

摘要

经济政策的波动往往会产生连锁反应,可能对大宗商品价格产生重大影响,包括基本食品价格,进而对粮食安全产生潜在影响。最初被概述为金砖国家的5个新兴国家(巴西、俄罗斯、印度、中国和南非)最近进行了扩容,于2024年1月1日新增了4个成员国(埃及、埃塞俄比亚、伊朗和阿联酋)。此外,预计阿根廷和沙特阿拉伯很快也将加入该集团。这一扩容将改变地缘政治格局,可能催生出新的合作与竞争态势。本研究的核心目标是衡量经济政策不确定性如何不对称地影响扩大后的金砖国家的食品价格。以往的研究主要依赖面板数据方法,往往忽略了不同国家政策不确定性与食品价格关系中的异质性。相反,本研究应用了分位数对分位数方法,该方法允许进行更精确的考察,提供全面的全球概况以及针对每个国家的具体见解。结果表明,在所选定的经济体中,由于经济政策不确定性,不同分位数范围内的食品价格均显著上涨。这些结果凸显了政策制定者进行全面评估并有效管理与经济政策不确定性和食品通胀相关方法的必要性。

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