“食物链”指生态系统中通过食物关系把多种生物连接起来的一种连锁关系。传播生态学视野中的电视节目交易市场同样存在一条“食物链”。电视节目交易市场存在三个显性的主体(制作商、发行商、播出商即电视台)和一个看不见的主体(节目消费者)。电视节目交易市场的四个主体构成 “Food chain” refers to a chain of relationships in the ecosystem that connects multiple organisms through food relationships. There is also a “food chain” in the television programming market in communication ecology. There are three dominant actors (producers, distributors, broadcasters, and TV stations) and an invisible agent (program consumer) in the TV program market. The four main components of the television program market