信息化如何促进国内市场整合：减少黏性信息的视角

数字信息技术能够使市场主体以较低的成本获得及时、准确、充分的商品供求与价格信息，减少跨地区交易中的黏性信息，这为促进国内市场整合提供了新途径。文章采用2015-2017年近100个地级市的“数字中国”指数及大样本产品价格数据，使用基于时间序列的动态方法计算地区间市场分割度，并构建有调节的中介效应模型考察数字信息技术对国内市场整合的作用及机制。结果发现：提升信息化水平能够推动国内市场整合，其中促进地区间价格联动调整具有部分中介作用，而信息化水平差距和空间地理距离则具有负面的调节作用。因此，改善信息条件、提升交易效率，构建更为高效、灵敏的地区间供求与价格联动机制，应成为当前促进国内市场整合的必要之举。

How Informatization Promotes Domestic Market Integration: From the Perspective of Reducing Information Stickiness

Digital information technology can enable market players to obtain timely, accurate and sufficient commodity supply/demand and price information at a lower cost, and reduce the sticky information in cross regional transactions, which provides a new way to promote the integration of the domestic market. Using the “Digital China” index and large sample product price data of nearly 100 prefecture level cities from 2015 to 2017, this paper adopts the dynamic method based on time series to calculate the index of inter-regional market segmentation, and then constructs a moderated mediating effect model to investigate the role of digital information technology and the mechanism. Results show that improving the informatization level can promote the market integration between regions, in which the linkage of product price adjustment plays a partial intermediary role, while the informatization level gap and spatial geographical distance have a negative moderate effect. Therefore, improving information conditions, promoting transaction efficiency and building a more efficient and sensitive inter-regional product supply/demand and price linkage mechanism should become a necessary measure to promote domestic market integration.