中文摘要：

借鉴社会网络分析方法和城市引力模型,从网络的基本形态、结构属性和网络特征3个维度对环鄱阳湖区城市群整体和分区的经济联系进行研究。研究表明：（1）从网络中心性角度看,整体网络中的中介程度不高,城市之间资源交换的程度不高,而各个圈层网络表现为南昌市的中心度很高,在城市群经济发展中起重要作用。（2）从小团体分析的角度看,整体网络被划分为两个联系紧密的团体,而核心区网络则出现了结构洞。（3）从角色分析角度看,整体网络角色可大致分为经济领导、辐射输出、接受辐射以及普通角色,而整体网络优势尚未发挥。由此,依据网络分析结果进一步提出实现环鄱阳湖城市群网络化优化发展的政策建议。

英文摘要：

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 geog