<span style="color: rgb(51, 51, 51); font-family: 宋体; font-size: 12pt;" ar-sa;"="" zh-cn;="" en-us;="" 0pt;="" roman";="" new="" "times="" yahei";="" "microsoft="" times="">为了进一步了解物种受威胁的情况和发展，以加强物种保护工作，世界保护联盟制定了一个新的物种受威胁分类系统草案，把物种受威胁的程度分为９个级别，即绝灭种、野生状态下的绝灭种、极危种、濒危种、渐危种、敏感种、安全的／危险性小的种、不充分了解的种和未估价的种。本文对这个分类系统草案作了简略的评介。

For further understanding on threatened states of biological species and their development, the IUCN draft of new threatened category system was formulated. The following 9 levels were inclued in the new system: Extinct (EX) Extinct in the Wild (EW) , Critical (CR) Endangered (EN ) , Vulnerable ( VU ) , Susceptible ( SU ) , Safe/ Low Risk ( S/ LR ) ,Insufficiently Known (IK) and Not Evaluated (NE). This paper simply makes introduction and review on this system for reference.