低碳试点城市政策对企业技术创新的影响——基于DID双重差分模型的实证研究  

The Influence of Pilot Policy of Low-Carbon City on Enterprise Technology Innovation: An Empirical Research Based on Difference-in-Different Model

作　　者：李林红[1] 王娟[1] 徐彦峰 LI Linhong;WANG Juan;XU Yanfeng(Faculty of Management and Economics,Kunming University of Science and Technology,Kunming Yunnan 650093,China)

机构地区：[1]昆明理工大学管理与经济学院

出　　处：《生态经济》2019年第11期48-54,共7页Ecological Economy

基　　金：国家自然科学基金项目“基于超网络的云南山地农业可持续发展研究”(71463032)

摘　　要：低碳试点城市政策旨在促进城市经济发展中的低碳生产和低碳消费,低碳下的企业技术创新行为就是在企业技术产业转型升级过程中保持低能耗、低污染和低排放。论文从地级市企业技术创新层面展开研究,以国家统计局划分的高技术产业(制造业)企业为例进行分析,通过对迄今为止公布的36个低碳试点城市和随机选取的85个对照样本城市进行双重差分法(DID)实证分析。结果显示:低碳试点城市政策有助于促进企业技术创新的发展,并且这一结果在稳健性检验、反事实检验之后依然成立;低碳试点城市政策扩大了试点城市和样本城市在企业技术创新值上的差距,低碳试点城市政策对第一批试点城市的影响大于对第二批试点城市的影响;低碳试点城市政策对企业技术创新的推动作用呈现边际效应递减的规律,故低碳试点城市政策的实施不仅能提升企业的技术创新能力,还能缩小不同等级城市间企业技术创新水平的差距,为未来政府相关政策的制定与实施提供借鉴。The pilot policy of low-carbon city aims to promote the low-carbon production and low-carbon consumption in the economy development of city. The enterprise’s technological innovation behavior in the background of low-carbon economy is to maintain low energy consumption, low pollution and low emissions in the process of transformation and upgrading of enterprise technology industry. This paper conducts research on the level of enterprise technological innovation in prefecturelevel cities, and takes the high-tech industry(manufacturing) classified by the National Bureau of Statistics as an example, and uses the difference-in-different(DID) method to make an empirical analysis on 36 low-carbon pilot cities announced so far in 85 randomly selected sample cities. The results show that the pilot policy of low-carbon city helps to promote the development of enterprise technological innovation, and this result is still tenable after the robustness test and counter-fact test. The pilot policy of low-carbon city has widened the gap between the pilot cities and the sample cities in terms of the value of enterprise technological innovation and the influence of the pilot policy of low-carbon city on the first batch of pilot cities is greater than that of the second batch of pilot cities. The driving effect of the pilot policy of low-carbon city on enterprise technological innovation is marginal decrease. Therefore, the pilot policy of low-carbon city can not only promote enterprise technological innovation, but also reduce the gap in the level of enterprise technological innovation among cities of different grades, and which can help the government make and implement the relevant policy in the future.

关 键 词：低碳试点城市政策 企业技术创新 双重差分法 

分 类 号：F062.2[经济管理—政治经济学] F272