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1生态系统的稳定性一般来说,自然生态系统都有一定的自我修复功能。当受到外力破坏之后,如果系统仍能在相应的时间尺度内恢复至原来的状态,那么这个系统是绝对稳定的;如果系统不能恢复原状但可以在新的状态下达到平衡,那么这个系统是相对稳定的;如果系统非但不能恢复原状,甚至不能在新的状态下达到平衡,而是继续向坏的方向发展,直至丧失其基本生态功能,那么这个系统就是绝对不稳定的。绝对不稳定系统通常会走向极端,造成
1 Ecosystem stability In general, natural ecosystems have some self-healing function. The system is absolutely stable if it is still able to return to its original state on the corresponding time scale when it is damaged by external forces; if the system can not be restored but can be balanced in the new state, then the system is relatively Stable; if the system can not be restored to its original state, or can not even strike a balance in the new state, but will continue to develop in a bad direction until it loses its basic ecological function, then the system is absolutely unstable. Absolutely unstable systems usually go to extreme, causing