新冠肺炎疫情對驗證蔬菜的價量影響

Abstract

本研究以產銷履歷與有機蔬菜等驗證蔬菜為主要分析對象，探討新冠肺炎疫情對其批發價格與交易量的影響。本研究以新冠肺炎疫情發生前後（2018年1月1日至2022年12月31日）共五年的時間為樣本期間，收集臺灣批發市場中產銷履歷與有機蔬菜的交易資料，並配合衛福部公布的每日確診人數資料，使用迴歸模型進行實證分析。與一般蔬菜相比，在1%的統計水準下，每日確診人數增加的同時，產銷履歷蔬菜的交易量將比一般蔬菜增加2.589公斤；相比於一般蔬菜，每日確診人數增加的同時，有機蔬菜的交易量將比一般蔬菜增加1.694公斤。 本研究之實證結果說明在新冠肺炎疫情時期，民眾為追求均衡飲食，以利提升自身免疫力，導致產銷履歷蔬菜與有機蔬菜之需求提升，使其交易量有顯著變化。根據實證發現，政府應該加強對市面上銷售產銷履歷蔬菜與有機蔬菜之稽查，以確保標章的公信力，才能更符合消費者期待而共創雙贏的局面。

This study focuses on traceable and organic vegetables to examine the impact of the COVID-19 pandemic on their wholesale prices and trading volumes. The sample period for this study spans five years, before and after the occurrence of the COVID-19 pandemic, from January 1, 2018, to December 31, 2022.Data of traceable and organic vegetables in Taiwan's wholesale markets are collected, along with the daily confirmed cases data published by the Ministry of Health and Welfare. Regression models are used for empirical analysis. Compared to general vegetables, at a 1% significance level, the daily increase in confirmed cases is associated with a 2.589-kilogram increase in the trading volume of traceable vegetables. Similarly, compared to general vegetables, the daily increase in confirmed cases is associated with a 1.694-kilogram increase in the trading volume of organic vegetables. The empirical results of this study demonstrate that during the COVID-19 pandemic, individuals are pursuing balanced diets to enhance their immune systems, leading to an increased demand for traceable and organic vegetables, resulting in significant changes in their transaction volumes. Based on the findings, it is crucial for the government to strengthen inspections of traceable and organic vegetables sold in the market to ensure the credibility of labels, thus meeting consumer expectations and creating a win-win situation for all parties involved.