数字技术的快速发展和广泛融合深刻地改变了经济结构,成为重塑国家创新格局、赋能新质生产力的关键力量。基于2014—2022年我国地级市关键数字技术发明专利数据,在划分七种关键数字技术类型的基础上,定量比较城市不同类型数字技术融合能力,探索关键数字技术融合对城市技术突破影响的过程与机理。研究发现:首先,东部城市关键数字技术融合能力处于全国领先地位,武汉、成都、西安等中西部城市的快速崛起打破了原有由东部城市主导的格局,区域之间总体差距缩小。其次,数字技术之间的融合程度不断加深,人工智能技术在其中发挥了关键作用。此外,数字技术与非数字技术(尤其是化学和医学领域)融合程度显著提高,其中,量子信息技术的跨界融合程度最高。最后,七类数字技术融合均显著促进了城市技术突破,其中,元宇宙的促进效果最为显著。中介效应分析结果表明,关键数字技术融合通过知识相关多样化与非相关多样化促进城市技术突破。研究结论可为提升城市关键数字技术领域创新能级、融合形成关键领域优势提供科学依据与政策启示。
The rapid development and widespread integration of digital technologies have profoundly changed the economic structure, becoming a key force in reshaping the national innovation landscape and empowering new productive forces. Based on the invention patent data for key digital technologies from 2014 to 2022 in China’s prefecture-level cities, this study classifies seven types of key digital technologies and quantitatively compares the digital technology integration capabilities of cities. It explores the process and mechanisms through which the integration of key digital technologies impacts technological breakthroughs in cities. The study finds that: firstly, eastern cities lead the country in digital technology integration capabilities, but in recent years, cities in the central and western regions (such as Wuhan, Chengdu, and Xi’an) have risen rapidly, breaking the previous pattern dominated by eastern cities, and the gap between regions has generally narrowed. Secondly, the degree of integration among digital technologies has deepened, with artificial intelligence playing a key role. Furthermore, the integration of digital and non-digital technologies (especially in the fields of chemistry and medicine) has significantly increased, with quantum information technology exhibiting the highest level of cross-disciplinary integration. Finally, the integration of all seven types of digital technologies has significantly promoted technological breakthroughs in cities, with the metaverse having the most pronounced effect. Mediation effect analysis shows that the integration of key digital technologies promotes technological breakthroughs in cities through knowledge related variety, unrelated variety.
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