| 彭顺.新能源示范城市政策对企业绿色创新影响研究——基于我国A股上市公司样本的PSM-DID分析[J].唐山学院学报,2023,36(1):87-99,108 |
| 新能源示范城市政策对企业绿色创新影响研究——基于我国A股上市公司样本的PSM-DID分析 |
| Research on the Policy Effect of New Energy Demonstration Cities on the Enterprise's Green Innovation: Based on the PSM DID Analysis of the Samples from the A-share Listed Companies |
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| DOI：10.16160/j.cnki.tsxyxb.2023.01.011 |
| 中文关键词: 新能源示范城市 可再生能源发展政策 企业 绿色创新 PSM-DID 政策效应 |
| 英文关键词: new energy demonstration city renewable energy development policy enterprise green innovation PSM-DID policy effect |
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| 摘要点击次数: 6290 |
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| 中文摘要: |
| 以2003-2019年我国A股上市公司的数据为样本，采用倾向得分匹配模型（PSM）与双重差分法（DID）相结合的方法，检验评估了2014年开始实施的新能源示范城市政策对企业绿色创新的影响效应，得出如下结论：第一，新能源示范城市政策诱发了企业绿色创新行为，企业绿色专利授权量和绿色专利授权比率都显著增长；第二，在新能源示范城市政策影响下，企业的绿色创新活动多倾向于绿色实用新型专利的研发；第三，新能源示范城市政策对企业绿色创新的影响效应持续期大致为3年，并呈递减趋势；第四，在绿色专利授权量不同分位数下，政策效应did系数随因变量的增大而增大；第五，不同类型的企业在绿色创新上对新能源示范城市政策的反应程度不同，国有、高能耗、四大审计这三类企业的绿色创新更显著。 |
| 英文摘要: |
| With the data from China's A-share listed companies from 2003 to 2019 as a sample, and propensity score matching model (PSM) and double difference method (DID)together as the method, the policy effect of the new energy demonstration city on the enterprise's green innovation since 2014 is tested, and the conclusions are drawn as follows:First, the new energy demonstration city policy induced the enterprise's green innovation behavior,and the number and ratio of the green patents have both significantly increased; Second, under the influence of the policy,the enterprise's green innovation activities tend to be more inclined to the research and development of green utility model patents;Third, the impact effect of the policy on the green innovation lasts 3 years,showing a decreasing trend; Fourth, under the different quantiles of green patent grants,the did coefficient of policy effect increases together with the dependent variable; Fifth, different types of enterprises respond differently to the policy in green innovation, among which the three types of enterprises:the state-owned, high energy-consuming and four major auditing ones, are more significant. |
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