Research on Technology Distribution,Main Patterns and Network Evolution of Green Innovation Collaboration:Based on the Energy Field of 294 Cities Above the Prefecture Level
Energy green innovation(EGI)has become a key path to achieving carbon peaking,carbon neutrality,and sustainable development.Under policy constraints,collaboration has become an important means to reduce the risks and complexities of green innovation.In this context,based on patent data,an energy green innovation collaboration(EGIC)da-tabase spanning 37 years and covering 294 cities above the prefecture level was constructed.The two-dimensional quadrant analysis framework and social network analysis were used to study the distribution of technology fields,inter-organizational collaboration patterns and characteristics of collaboration networks.The study found that:(1)Alternative energy production(AEP)has always accounted for the highest proportion in the technical field of EGI,but the proportion of energy conserva-tion(EC)has been growing,and the gap with alternative EC has narrowed;the growth of EGIC is rapid,and the main techni-cal fields of collaboration have undergone fundamental changes,from AEP to EC.The technical fields of EGIC in represen-tative cities are becoming more and more widespread,but they are still concentrated in a few IPC subclass of technologies,and these IPC subclasses have been changing at different times.(2)In inter-organizational collaboration,enterprise-enter-prise collaboration(EE)and academic institution-enterprise collaboration(AE)are the two most important collaboration pat-terns.EE has gradually replaced AE as the dominant innovation collaboration pattern;in regional collaboration,most cities are in the'low innovation collaboration intensity/low EGIC intensity'quadrant in the first and second stages.In the third stage,the distribution of cities starts from the coordinate origin and presents a"trumpet-shaped"distribution.During the ob-servation period,many cities achieved the quadrant jump,the relevant analysis results show that the intensity of urban EGCI is highly related to its innovation cooperation intensity,and inter-city collaboration is greater than intra-city collaboration.(3)The scale and density of inter-city cooperative networks increase rapidly,the value of structural holes decreases signifi-cantly,the average control power of nodes decreases,and the values of the three centralities show differentiated changes.The position and status of cities in the network are quite different.Three categories of cities are divided based on the posi-tion and status in networks.The first category is mostly municipalities,sub-provincial cities or strong provincial capital cit-ies with rich structural holes,many connections with other cities,and occupies an important position in the network.The sec-ond category is mostly provincial capital cities with relatively weak economies in the central and western regions or impor-tant cities within the province.These cities are often important bridges between prefecture-level cities in the province and other cities.The third category is general prefecture-level cities,which have certain collaboration with other cities,but occu-py limited resources in the network.
green innovationenergyinter-city collaborationinter-organization collaborationcollaboration network
NETL
NSTL
万方数据
