This paper discusses the content of ecological risk and gives a definition to it: ecological risk is the probability of bad happenings caused by the ecological factors and the degrees of the outcomes.

• 本文探讨了生态风险的内涵，定义了生态系统的风险：生态系统的风险是其生态因子所导致的不良事件发生的概率及其后果的严重程度。