Are cities greener because of innovation? Independent innovation policy and green economic efficiency

IF 3.9 4区环境科学与生态学 Q2 ENVIRONMENTAL STUDIES Chinese Journal of Population Resources and Environment Pub Date : 2024-06-01 DOI:10.1016/j.cjpre.2024.06.002

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Abstract

The national independent innovation demonstration zone (NIIDZ) is an independent innovation policy that plays a crucial role in implementing strategies. Given the importance of the NIIDZ, this study uses panel data of 278 prefecture-level cities in China from 2006 to 2020 and empirically examines the effect and internal mechanism of the NIIDZ on green economic efficiency (GEE) using the difference-in-difference model (DID). The results show that the NIIDZ effectively enhances the growth of GEE, and the results remain valid through several robustness tests, such as year-by-year propensity score matching. The transmission mechanism suggests that the NIIDZ indirectly drives GEE by accelerating scientific and technological investment, promoting talent concentration, and optimizing the industrial structure. Moreover, heterogeneity analysis reveals that the promotion effect of the NIIDZ on GEE is more prominent in the eastern region and high green development level areas. The study’s findings can serve as a reference for China to further utilize the policy effectiveness of the NIIDZ and accelerate the high-quality development of the green economy in the future.

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城市是否因创新而更加绿色？自主创新政策与绿色经济效率

国家自主创新示范区（NIIDZ）是一项自主创新政策，在实施战略中发挥着至关重要的作用。鉴于国家自主创新示范区的重要性，本研究利用 2006 年至 2020 年中国 278 个地级市的面板数据，采用差分模型（DID）实证检验了国家自主创新示范区对绿色经济效率（GEE）的影响及其内在机制。结果表明，新经济发展区有效地促进了绿色经济效率的增长，而且通过逐年倾向得分匹配等稳健性检验，结果仍然有效。传导机制表明，国家创新驱动发展区通过加快科技投入、促进人才集聚、优化产业结构间接推动了 GEE 的发展。此外，异质性分析表明，国家自主创新示范区对 GEE 的促进作用在东部地区和绿色发展水平高的地区更为突出。研究结果可为中国未来进一步发挥国家自主创新示范区的政策效能、加快绿色经济高质量发展提供参考。

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来源期刊

Chinese Journal of Population Resources and Environment ENVIRONMENTAL STUDIES-

CiteScore

4.30

自引率

1.10%

发文量

791

审稿时长

79 days

期刊介绍： The Chinese Journal of Population, Resources and Environment (CJPRE) is a peer-reviewed international academic journal that publishes original research in the fields of economic, population, resource, and environment studies as they relate to sustainable development. The journal aims to address and evaluate theoretical frameworks, capability building initiatives, strategic goals, ethical values, empirical research, methodologies, and techniques in the field. CJPRE began publication in 1992 and is sponsored by the Chinese Society for Sustainable Development (CSSD), the Research Center for Sustainable Development of Shandong Province, the Administrative Center for China's Agenda 21 (ACCA21), and Shandong Normal University. The Chinese title of the journal was inscribed by the former Chinese leader, Mr. Deng Xiaoping. Initially focused on China's advances in sustainable development, CJPRE now also highlights global developments from both developed and developing countries.