The essentiality of regional ECI is coupling-based interaction innovation(CII)because its formation is the result of interactive learning, cooperation and competition among cluster actors.

• 区域企业集群创新实质为耦合互动创新,这是因为区域企业集群创新的形成是集合主体交互学习合作竞争的结果,主体间交互学习的实现是以区域企业集群内顺畅而有效的知识转移和交流为前提的,而企业集群中主体间的接近性耦合是知识顺畅转移和交流的保证。