智慧城市建设对企业绿色创新的影响——基于准自然实验的实证研究  

Effects of Construction of Smart Cities on the Green Innovation of Enterprises:An Empirical Study Based on Quasi-Natural Experiments

作　　者：余得生[1] 王姝婕 YU De-sheng;WANG Shu-jie(School of Economics and Management,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学经济管理学院,南昌330013

出　　处：《湖南师范大学自然科学学报》2024年第3期111-119,共9页Journal of Natural Science of Hunan Normal University

基　　金：江西省社会科学基金资助项目(21JL07)。

摘　　要：基于2007—2020年A股上市公司与地级市的年度面板数据,运用多期双重差分法实证检验智慧城市试点政策对企业绿色创新的影响,研究发现:(1)智慧城市试点政策显著提升了企业绿色创新数量和绿色创新质量,且该结论经过PSM-DID及安慰剂等一系列稳健性检验后依然成立;(2)智慧城市试点政策通过增强城市财政支持、缓解企业融资约束进而促进企业绿色创新的“增量提质”;(3)微观层面异质性分析结果表明,智慧城市试点政策对成长期、非重污染企业绿色创新的“增量提质”作用更显著;宏观层面表明,试点政策对企业绿色创新的“增量提质”效应在低市场化进程、东中部地区企业中更加明显。Based on the annual panel data of A-share listed companies and prefecture-level cities from 2007 to 2020,this paper empirically tested the impact of smart city pilot policies on the corporate green innovation using the multi-period double difference method.The results are as follows.(1) The smart city pilot policy significantly improves the quantity of green innovation and the quality of green innovation of enterprises,and the conclusion is still established after a series of robustness tests such as PSM-DID and placebo tests.(2) Smart city pilot policies promote the “incremental quality” of corporate green innovation by enhancing municipal financial support and easing corporate financing constraints.(3) Micro-level heterogeneity suggests that the “incremental and qualitative” effect of the smart city pilot policy on the green innovation is more pronounced in mature and non-seriously polluting enterprises;macro-level suggests that the “incremental and qualitative” effect of the pilot policy on the green innovation is more pronounced in low-market and east-central region enterprises.

关 键 词：智慧城市 企业绿色创新 绿色创新数量 绿色创新质量 

分 类 号：F273.1[经济管理—企业管理] F299.2[经济管理—国民经济] F49F832.51