首页|突发动物疫情信息与猪肉价格波动——基于消费者网络关注视角

突发动物疫情信息与猪肉价格波动——基于消费者网络关注视角

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本文利用网络爬虫技术,搜集了 2013-2021年的月度省级面板数据,结合"信息经济学",运用精确断点回归法分析了突发动物疫情事件信息所引发的消费者网络关注突变(异常关注)对猪肉价格波动的影响及其作用机制。结果表明,(1)突发动物疫情事件信息引发消费者网络关注的突变会显著加剧猪肉价格波动;(2)引入信号环境因素后发现这一加剧作用存在异质性,从"信息被动获取"的角度来看,消费者网络关注与猪肉价格波动率之间呈"U"型关系;从"信息主动搜寻"的角度来看,在信息完全时消费者网络关注与猪肉价格波动率之间呈倒"U"型关系,而在信息不足时则呈"U"型关系;(3)进一步区分消费者异常关注和非异常关注后的回归结果显示,在不同的信号环境中,非异常关注对猪肉价格波动均不存在显著影响,而消费者异常关注对猪肉价格波动存在显著影响且有所差异,其中,"信息主动搜寻"渠道在消费者异常关注影响猪肉价格波动的过程中具有调节作用。本文结论为厘清消费者网络关注影响猪肉价格波动的机理、加强农业部门需求侧管理提供了实证参考。
Sudden Animal Epidemic Information and Pork Price Fluctuation:From the Perspective of Consumer Network Attention
Using web crawler technology,we collected monthly provincial panel datafrom 2013 to June 2021.Combined with"information economics",the regression Discontinuity Design is used to analyze the influence of sudden change of consumer network attention(abnormal atten-tion)caused by sudden animal epidemic information on pork price fluctuation and its mechanism.The results show that:(1)The sudden change of consumer network attention caused by the sudden animal epidemic information will significantly aggravate pork price fluctuation.(2)After introducing the signal environmental factors,it is found that this aggravating effect is heterogene-ous.from the point of view of"passive acquisition of information",there is a U-shaped relation-ship between consumer network attention and pork price volatility.From the perspective of"active information search",there is an inverted U-shaped relationship between consumer network atten-tion and pork price volatility when the information is complete,and turning to U-shaped when the information is insufficient.(3)The regression results after further distinguishing between consumer abnormal concern and non-abnormal concern show that non-abnormal concern has no significant impact on pork prices fluctuations,while consumer abnormal concern has a significant impact on pork price fluctuations in different signal environments and has differences,among which the"in-formation active search"channel has a regulatory effect in the process of consumer abnormal con-cern affecting pork price fluctuations.The conclusions provide an empirical reference for clarifying the mechanism of consumer network attention affecting pork price fluctuations and improving de-mand side management in the agricultural sector.

InformationConsumer network attentionPrice fluctuationSignal environmentRe-gression discontinuity design

李霞、陶建平、涂涛涛

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华中农业大学经济管理学院 武汉 430070

信息 消费者网络关注 价格波动 信号环境 断点回归

国家自然科学基金面上项目中央高校基本科研项目

717730332662020JGPYD02

2024

农业技术经济
中国农业技术经济学会 中国农业科学院农业经济与发展研究所

农业技术经济

CSTPCDCSSCICHSSCD北大核心
影响因子:1.923
ISSN:1000-6370
年,卷(期):2024.(2)
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