长三角地区生物医药技术合作网络的空间演化及驱动机制  

The spatial pattern evolution and driving mechanism of the directed network of technological cooperation in the Yangtze River Delta

作　　者：刘通[1] 毛炜圣 刘承良[1,2] LIU Tong;MAO Weisheng;LIU Chengliang(School of Geographic Sciences,East China Normal University,Shanghai 200241,China;Institute for Global Innovation&Development,East China Normal University,Shanghai 200062,China)

机构地区：[1]华东师范大学地理科学学院,上海200241 [2]华东师范大学全球创新与发展研究院,上海200062

出　　处：《地理研究》2024年第1期86-104,共19页Geographical Research

基　　金：国家自然科学基金面上项目(42171179);国家社会科学基金一般项目(20BJL109);上海市“曙光人才计划”项目(19SG22)。

摘　　要：构建城市技术合作有向网络,识别城市创新网络的不平等位势和竞合关系,是理解城市创新枢纽和创新网络重塑的关键指标。本文通过技术合作的方向性特征构建有向加权的城市技术合作网络,以生物医药领域为例,刻画了长三角城市技术合作网络的空间格局,并利用动态指数随机图模型分析了网络演化的多维动力机制。结果发现:①长三角生物医药技术合作网络呈现“一核(上海)三心(南京、杭州、合肥)多点”的核心-边缘结构,具有显著的省域差异和较弱的省际协同。②长三角生物医药技术合作网络演化过程具有典型的结构依赖性,体现在二元互惠关系的发育和三元结构洞的闭合,并在时序上呈现结构的依赖特征。③经济发展水平、城市行政等级、城市创新能力促进了城市网络联系的扩张,城市间的地理邻近性、组织邻近性、技术邻近性推动了城市间技术合作关系的形成。④网络的互惠性、核心城市引领所驱动的传递闭合性、聚敛闭合性,以及非核心节点的关系扩张是长三角生物医药技术合作网络演化的结构动力,网络演化具有显著的自回归性,即节点联系在时序上保持稳定的特性。文章定义了城市技术合作有向加权网络的构建方法,并利用动态指数随机图模型系统揭示了城市技术合作网络演化的结构动力。Building a directed network of urban technological cooperation and identifying the unequal potential and competing relationship of urban innovation network are key indicators to understand the urban innovation hub and the remodeling of innovation network.This paper constructs a weighted urban technical cooperation network based on the directional characteristics of technical cooperation.Taking the field of biomedicine as an example,it depicts the spatial pattern of the urban technical cooperation network in the Yangtze River Delta(YRD),and analyzes the multi-dimensional power mechanism of the network evolution using the dynamic exponential random graph model.The results showed that:(1)The biomedical technology cooperation network of the YRD presented a"1+3+N"evolution model,formed a core-periphery structure under the leadership of Shanghai and the three provincial capitals(Nanjing,Hangzhou and Hefei),and presented significant provincial differences and weak inter-provincial coordination.(2)The evolution process of the biomedical technology cooperation network in the YRD has typical structure and time dependence characteristics,which is reflected in the development of the binary reciprocity relationship and the closure of the ternary structure hole,and presents the structure dependence characteristics in time sequence.(3)The level of economic development,administrative level and innovation capacity promote the expansion of cities’network connections.The geographical proximity,organizational proximity and technological proximity between cities promote the formation of inter-city technical cooperation relations.(4)Reciprocity,transitive closure,incoming closure and relationship expansion of non-core nodes of the network are the structural dynamics of the evolution of the biomedical technology cooperation network in the YRD.The evolution of the network has significant auto-regression,that is,the node connection is stable in time sequence.This paper defines the construction method of the directed weighted network of

关 键 词：城市技术合作网络 有向网络 长三角城市群 生物医药技术 动态指数随机图模型 

分 类 号：F426.72[经济管理—产业经济]