摘要
新冠肺炎疫情对中国经济社会产生了重大冲击,也导致防疫物品等重要民生商品价格出现非正常上涨。疫情等重大突发公共事件冲击下重要民生商品价格如何传导,如何导致福利损失是当前理论研究的薄弱点。本文基于双重加价模型,对产业链垄断定价导致的最终产品价格上涨和福利损失进行理论分析,发现最终产品价格和社会福利损失与生产者加价能力和生产迂回程度皆正相关。同时,从疫情冲击导致生产者与消费者之间信息不对称的现实出发,发现重大突发公共事件导致重要民生商品价格上涨的主要原因是信息不对称使生产者获得更高的垄断势力。进一步分析可知,疫情等重大突发公共事件冲击导致需求激增和信息失衡加剧,使生产者获得垄断定价甚至超越垄断定价的机会,此时可能的社会福利损失或会超过理论分析中的产业链双重加价福利损失。本文的研究结论可以为政府更好应对重大突发公共事件下物价上涨、维护市场和社会秩序提供思路。
The COVID-19 pandemic had a great effect on China’s economy and society,and led to an abnormal rise in the prices of important livelihood commodities,such as pandemic prevention goods.Under the impact of major public emergencies such as the pandemic,how to transmit the price of important livelihood commodities and how to cause welfare losses are weak points of current theoretical research.Therefore,based on the double mark-up model,this paper analyzes the final product price rise and welfare losses caused by the monopoly pricing of the industrial chain,indicating that the final product price and social welfare losses are positively correlated with the producer’s mark-up capacity and the production roundabout degree.At the same time,starting from the reality of information asymmetry between producers and consumers caused by the pandemic,it is found that the main reason for the price rise of important livelihood commodities caused by major public emergencies is that information asymmetry enables producers to gain a higher monopoly power.Further analysis shows that the impact of major public emergencies such as the pandemic leads to the surge in demand and the aggravation of information imbalance,which gives producers the opportunity to obtain monopoly pricing or even surpass monopoly pricing.In this case,the possible social welfare loss may exceed double mark-up welfare losses of the industrial chain in theoretical analysis.The conclusion of this paper may provide references for the government to better deal with major public emergencies to stabilize prices and maintain market and social order.
作者
陈林
张涛
CHEN Lin;ZHANG Tao(Jinan University,Guangzhou 510632)
出处
《经济与管理研究》
CSSCI
北大核心
2022年第5期3-16,共14页
Research on Economics and Management
基金
国家自然科学基金面上项目“竞争政策与准入规则的协调机制研究”(71773039)
“研究阐释党的十九届四中全会精神”国家社会科学基金重点项目“自由贸易试验区负面清单制度的推广与评估”(20AZD050)
广东省哲学社会科学“十四五”规划重大基础理论研究专项“广东省碳达峰与碳中和先行示范研究”(GD21ZDZYJ0)
广东省自然科学基金面上项目“广东省经济周期波动与环境规制的适宜性选择”(2020A1515011107)。
关键词
重大突发公共事件
重要民生商品
价格传导
福利损失
信息不对称
major public emergency
important livelihood commodity
price transmission
welfare loss
information asymmetry
