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经济政策不确定性与商品市场波动:对经济复苏的影响。

Economic policy uncertainty and commodity market volatility: implications for economic recovery.

机构信息

School of Finance, Central University of Finance and Economics, Beijing, 100081, China.

Business School, Central University of Finance and Economics, Beijing, 100081, China.

出版信息

Environ Sci Pollut Res Int. 2022 Aug;29(40):60662-60673. doi: 10.1007/s11356-022-19328-2. Epub 2022 Apr 15.

Abstract

As a consequence of the COVID-19 pandemic outbreak, most commodities experienced significant price drops, which were expected to continue well into 2020. As a result, the Markov switching model is used to study the influence of policy uncertainty and the COVID-19 pandemic on commodity prices in the USA. Commodity markets are stimulated by economic policy uncertainty, according to results from a two-state Markov switching model. In both high and low regimes, economic policy uncertainty (EPU) influences the commodity market, according to the study's findings. However, in the high regime, EPU has a greater influence on the energy and metal sectors. EPU has different influences on commodity markets in high- and low-volatility regimes, according to this study. There is a wide range of correlations between COVID-19 outcomes and EPU and how the prices of natural gas, oil, corn, silver, soybean, copper, gold, and steel respond to these tremors, in both high- and low-volatility tenure. Oil and natural gas, on the other hand, are unaffected by shifts in COVID-19 death rates under either regime. Results show that in both high- and low-volatility regimes, the demand and supply for most commodities are responsive to historical prices.

摘要

由于 COVID-19 大流行的爆发,大多数商品的价格都经历了大幅下跌,预计这种情况将持续到 2020 年。因此,采用马尔可夫转换模型来研究政策不确定性和 COVID-19 大流行对美国商品价格的影响。结果表明,经济政策不确定性会刺激商品市场。根据两状态马尔可夫转换模型的结果,经济政策不确定性(EPU)在高、低两种情况下都影响商品市场。然而,在高经济政策不确定性时期,EPU 对能源和金属行业的影响更大。根据这项研究,EPU 在高波动和低波动时期对商品市场的影响是不同的。COVID-19 结果和 EPU 与天然气、石油、玉米、银、大豆、铜、金和钢的价格如何对这些波动做出反应之间存在广泛的相关性,无论是在高波动还是低波动时期都是如此。另一方面,在任何一种情况下,COVID-19 死亡率的变化都不会影响石油和天然气。结果表明,在高波动和低波动时期,大多数商品的供需对历史价格都有反应。

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