城市群绿色创新效率的时空特征及其驱动因素研究——以成渝地区双城经济圈为例

Research on the spatiotemporal characteristics and driving factors of green innovation efficiency in urban agglomerations——A case study of the Chengdu-Chongqing Economic Circle

摘要

绿色创新是成渝地区双城经济圈实现创新驱动与绿色发展的重要驱动力。通过构建绿色创新效率评价体系,基于超效率SBM模型和空间计量模型考察了2006—2021年经济圈绿色创新效率的时空演化特征及其影响因素。研究发现:1)经济圈绿色创新效率总体呈现增长态势,且呈现明显的阶段性特征;2)城市绿色创新效率具有空间非均衡特征,空间分布格局由以成都和重庆为中心的“双核心”格局向以成都、重庆、绵阳为中心的“多核心”格局转变;3)城市绿色创新效率呈现显著的空间相关性,空间正相关性逐渐增强;4)经济发展、政府支持、环境规制是推动城市绿色创新效率提升的主导因素,且经济发展、对外开放以及环境规制均具有显著的空间溢出效应,经济发展表现为正向溢出,而对外开放和环境规制表现为负向溢出;5)经济发展的驱动效应在经济发展高水平城市中更明显,而政府支持、环境规制的驱动效应在经济发展低水平城市中更明显,经济发展和环境规制的空间溢出效应在经济发展高水平城市中更明显。

Abstract

Green innovation is a crucial driving force for the Chengdu-Chongqing Economic Circle to achieve innovation-driven and green development.This paper constructs an evaluation system for green innovation efficiency,and based on the super-efficiency SBM model and spatial econometric model,examines the spatio-temporal evolution characteristics and influencing factors of the green innovation efficiency in the economic circle from 2006 to 2021.The research findings are as follows:1) Overall,the green innovation efficiency of the economic circle shows a growth trend and exhibits obvious stage-based characteristics; 2) The green innovation efficiency of cities has the characteristic of spatial disequilibrium,and the spatial distribution pattern has transformed from a "dual-core" pattern centered around Chengdu and Chongqing to a "multi-core" pattern centered around Chengdu,Chongqing,and Mianyang; 3) The green innovation efficiency of cities shows a significant spatial correlation,and the positive spatial correlation is gradually increasing; 4) Economic development,government support,and environmental regulation are the dominant factors promoting the improvement of urban green innovation efficiency.Moreover,economic development,opening-up,and environmental regulation all have significant spatial spillover effects.Economic development shows a positive spillover,while opening-up and environmental regulation show negative spillovers; 5) The driving effect of economic development is more obvious in cities with a high-level of economic development,while the driving effects of government support and environmental regulation are more obvious in cities with a low-level of economic development.The spatial spillover effects of economic development and environmental regulation are more obvious in cities with a high-level of economic development.

关键词

成渝地区双城经济圈 / 绿色创新效率 / 时空演进 / 影响因素 / 空间效应

Key words

Chengdu-Chongqing Economic Circle / green innovation efficiency / space-time evolution / influencing factors / spatial effect

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基金资助

四川省哲学社会科学基金青年项目(SCJJ24ND295);重庆市社会科学规划博士项目(2024BS057);全国统计科学研究年度项目(2025LY044);西华师范大学博士科研启动项目(24SE026)