Bekkers Eddy, Koopman Robert B
Economic Research and Statistics Division World Trade Organization Geneva Geneva Switzerland.
World Econ. 2022 Feb;45(2):445-467. doi: 10.1111/twec.13063. Epub 2020 Dec 8.
The WTO Global Trade Model, a quantitative trade model, is employed to project the impact on the global economy of the COVID-19 pandemic. Because of the profound uncertainty about the duration of the pandemic and the containment measures, three scenarios are constructed, V-shaped, U-shaped and L-shaped recovery, corresponding with a duration of the pandemic of 3 months, 6 months and more than a year. The pandemic and containment measures are assumed to lead to a general reduction of labour supply, a rise in trade costs, and reductions in both demand and supply in sectors most affected by the containment measures. GDP and trade are projected to fall by, respectively, 5% and 11% in the V-shaped and L-shaped scenarios and trade by, respectively, 8% and 20%. The response of trade to the reduction in GDP, measured by the trade-to-GDP elasticity, is projected to rise as the crisis lasts longer. The reason is that a longer duration will lead to a larger drop in spending on durables which are highly tradable.
世贸组织全球贸易模型是一种定量贸易模型,用于预测新冠疫情对全球经济的影响。由于疫情持续时间和防控措施存在极大不确定性,构建了三种情景,即V型、U型和L型复苏,分别对应疫情持续3个月、6个月和一年以上。假设疫情和防控措施会导致劳动力供应普遍减少、贸易成本上升,以及受防控措施影响最严重的部门的需求和供应下降。在V型和L型情景中,预计GDP和贸易将分别下降5%和11%,贸易将分别下降8%和20%。预计随着危机持续时间延长,以贸易与GDP弹性衡量的贸易对GDP下降的反应将上升。原因是持续时间越长,对高度可贸易的耐用品的支出下降幅度就越大。