王喆　余紫菱　马莉莉

关键词：自贸试验区；共富效应；贸易便利；监管服务；金融支持；空间溢出

摘 要：自贸试验区作为制度创新高地，其设立对全体人民共同富裕的实现具有重要意义。本文从富裕和共享两个维度构建了城市共同富裕程度的指标体系，并采用多期双重差分模型检验自贸试验区设立对所在城市共同富裕程度的影响及其相关机制，同时还探究了该政策实施对邻近地区共同富裕程度的作用。研究发现：随着自贸试验区的设立，试点城市的共同富裕程度得以提升，即自贸试验区设立的“共富效应”显著成立。异质性检验表明，互联网服务能力越高的城市，片区设立产生的“共富效应”越为明显；且相比内陆型片区而言，沿海型片区的设立对共同富裕程度的影响更为显著。进一步探析得出，自贸试验区设立不仅通过贸易便利、监管服务、金融支持这三条路径提升试点城市共同富裕程度，且在250km距离范围内还可通过空间溢出效应提升邻近地区共同富裕程度，其最佳溢出半径约为150km。

中图分类号：F741文献标识码：A文章编号：1001-2435（2023）06-0136-13

Establishment of Pilot Free Trade Zones and Realization of Common Prosperity： A Study Based on the Mechanism and Spatial Effect

WANG Zhe，YU Ziling，MA Lili（School of Economics and Management，Northwest University，Xian Shanxi 710127，China）

Key words： the Pilot Free Trade Zone；co-rich effect；trade facilitation；regulatory services； financial support；spatial spillover

Abstract： As a highland of institutional innovation，the establishment of free trade pilot zones is of great significance to the realization of common prosperity for all people. This paper constructs a measurement system for the degree of urban common prosperity from the two dimensions of prosperity and sharing，and uses the multi-period double-difference model to test the impact and its related mechanism of the establishment of the pilot free trade zone on the common prosperity of the city where it is located，and also explores the influence of the implementation of the policy on the common prosperity of neighboring areas. With the establishment of pilot free trade zones，the degree of common prosperity of pilot cities has been improved，that is，the "co-rich effect" of the establishment of pilot free trade zones has been significantly established. Heterogeneity test shows that the "co-rich effect" of pilot free trade zones is more obvious in cities with higher Internet service ability. Compared with the inland pilot free trade zones，the establishment of coastal pilot free trade zones has a more significant impact on the degree of common prosperity. Further analysis shows that the establishment of pilot free trade zones can not only improve the common prosperity of pilot cities through trade facilitation，regulatory services and financial support，but also improve the common prosperity of neighboring areas through spatial spillover effect within 250km，and the optimal spillover radius is about 150km.

一、引 言

共同富裕关乎国家繁荣和全体人民福祉，是社会主义制度优越性的集中体现。进入新时代以来，中國高度重视发展不平衡不充分问题，将共同富裕放在更加重要的位置。122021年8月，习近平总书记在中央财经委员会第十次会议上指出，坚持以人民为中心的发展思想，在高质量发展中促进共同富裕；在12月中央经济工作会议上再次强调，既要不断解放和发展社会生产力，创造和积累社会财富，又要防止两极分化。……