以长三角城市群26个城市为空间观测单元，以专利授权数作为创新产出的指标，运用Theil系数二阶分解的方法、探索性空间数据分析方法以及地理探测器法，从时间和空间视角分析了2005～2014年长三角城市群创新产出差异的时空格局演变及其影响因素。研究表明：（1）2005～2014年城市群创新产出的相对差异有减少的趋势且区域内部异质性作用明显；（2）人口加权的创新产出差异大于以GDP比重加权的差异，人口规模是影响创新产出的重要因素；（3）城市群创新产出空间上存在不均衡的集聚分布，总体呈现出“北冷南热，西冷东热”的空间相关性特征；（4）随着时间的推移，信息化水平逐渐成为影响长三角创新产出差异的主导因素。

This article analyzes the spatial and temporal evolution of innovation outputs and its influencing factors-measured by the number of patent authorization-in 26 cities in the Yangtze River Delta Urban Agglomeration from 2005 to 2014 by using two-stage nested Theil decomposition method and the exploratory spatial data analysis and the geography detector method from the perspective of time, space and geographical proximity. The results show that:(1)From the temporal characteristics, the relative difference of innovation output of urban agglomeration is decreasing from 2005 to 2014 and the heterogeneity within the region is obvious;（2）The difference of innovation output by the weighted with population is larger than the difference of innovation output by the weighted with GDP;(3)From the spatial characteristics, the innovation output of urban agglomeration is not balanced. The city of high innovation output presents "Z" font distribution mainly along the Shanghai-Nanjing-Hefei-Hangzhou-Ningbo development zone. The overall showing the "North cold South heat, the West cold hot" spatial correlation characteristics;(4)With the passage of time, the level of informatization has gradually become the dominant factor affecting the innovation output in the Yangtze River Delta.

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国家自然科学基金项目“全球创新资源转移的空间过程、格局与机制研究”