[目的/意义]学术组织是研究人员获取信息资源的重要渠道，考察学术组织社群网络信息交流的特征，有利于更好地发挥组织虚拟社区信息传播的作用，为促进信息共享和知识创造服务。[方法/过程]选择互联网研究者协会为研究对象，以该协会2001-2016年的邮件组存档为数据源，采用社会网络分析方法，分析社群交流网络的主要指标并可视化展示整体网络结构。[结果/结论]研究发现，学术组织社群的网络信息活动具有长尾分布特征，形成多层次的核心-边缘等级结构，随时间推移网络中的凝聚子群结构由密集趋于松散化，反映出从快速发展时期、稳定期到衰退期的历程。指出学术组织需要加强信息建设职责，确保核心成员对虚拟社区的持续关注和治理，营造良性互动的信息生态系统。
[Purpose/significance] The academic organization is an important channel for researchers to obtain information resources. To examine its characteristic of online information communication will benefit the community members in information sharing and knowledge creation. [Method/process] The Association of Internet Researchers was chosen as the data source, whose email list archive from 2001 to 2016 was collected. Using social network analysis methods, main indicators of the communication network were analyzed and the whole network was visualized. [Result/conclusion] Information activities of the academic organization community obey long-tail distribution, composing a multi-level core-periphery hierarchical network. The cliques in the social network evolved from an intensive structure to a loose one as time passed, which reflects the experience of fast developing, stable and declining period. The academic organization should reinforce the responsibility of information construction, and ensure core members pay continuous attention to and harness the virtual community to form optimal information ecology.
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