本文研究制度环境变化如何导致组织网络关系断裂。本文基于3764家公司18020名独立董事的追踪数据，使用连续双重差分模型和因果网络估计方法研究发现，在教育部2015年高校独立董事兼任政策实施后，企业网络断裂存在产权和空间双重异质性。国有股份占比越高，企业连锁关系断裂越多，结构洞位置受冲击越大；距离政策出台地越远，连锁网络断裂的所有权差异越小。其原因在于，不同组织面临的合法性压力以及政策执行力度不同。基于关系形成、断裂、重构的演化过程，本文提炼了制度对网络断裂影响的理论框架。

The paper examines how changes in the institutional environment lead to the dissolution of inter-organizational network ties. Drawing on longitudinal data from 18020 independent directors across 3764 companies and employing continuous difference-in-differences models and causal network estimation methods, the study finds that the dissolution of interlock network exhibit a dual heterogeneity in terms of ownership and space following the implementation of the Ministry of Education's policy on independent directors in academic field in 2015. The higher the proportion of state-owned shares, the more frequent the dissolution of interlock ties, and the greater the impact on structural hole positions. Moreover, the further a firm is located from the policy's origin, the weaker the effect of ownership differences on the dissolution of interlock network. This is because the variations in legitimacy pressures and policy enforcement across organizations. Based on the evolution process of ties formation, dissolution, and reconstruction, this paper constructs an theoretical framework of how institutions impact network dissolution.

本研究得到国家社会科学基金重大项目“数字经济背景下我国企业战略管理新范式建构研究”（22&ZD146)的支持。

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