Abstract:

Now the research on spatial network structure of urban agglomeration is relatively concentrated,while the dynamic analysis to various elements of the internal network is deficient.The inside knowledge of the various elements connected can help research,make plans to and manage the spatial network structure of urban agglomeration.Thus,the study on the relationship of the inside spatial network elements from basic form, structure attribute and network features has certain practical significance.Based on the social network analysis and urban gravity model,we studied the basic form,structure,properties and characteristics of the network.By studying three aspects of the Poyang Lake area,the economic contact about urban agglomeration was analyzed.The following conclusions were put forward in the paper.(1) The centrality analysis showed that the intermediary of the whole network was not high,the degree of resource exchange between cities was not high;from the network analysis of each circle,high degree of regional economic development in the center of Nanchang played an important role.(2)The subgroup analysis showed that the overall network was divided into two closeknit groups, and there was a structural hole in the core area.(3)The role analysis showed that the whole network could be divided into economic leadership role,radiation output,radiation receptor and the general role;the information and resources should be exchanged high efficiency between roles in order to maximize the advantages.Through network analysis,we put forward further policy recommendations as follows.(1)Develop and train economic leading cities such as Nanchang and Jiujiang. These cities can drive the surrounding cities develop more quickly.(2)Cities in urban agglomeration around the Poyang Lake should clarify their roles,so that the cities can better make use of their advantages.Nanchang should strengthen its core status and play role of the growth pole; while Jiujiang,Shangrao and Fuzhou should make full use of their unique geographical advantages, speed up the industrial development, increase construction dynamics,and finally build regional central cities.Jingdezhen,Yingtan and Yichun should make full use of their own advantages;clear their orientations,to speed up the population and production factors aggregation.(3)Setting up reasonable system and administrative districts arrangement,making the network of economic operation in more standard and fluent environment,could promote the relationships between cities in different zones from resources competition to cooperation