“地点”参数是构成 IUCN 红色名录标准的重要参数之一。 在 IUCN 红色名录评估过程中,使用“地点”参数时常常忽略或简化致危因子的作用,有时仅以标本记录、采集地点数、观测数据、文献记录的分布点、管理单元及行政单位等信息代替“地点”参数,导致“地点”参数不准确甚至偏离实际情况。 为解决这些问题,采用图解方式详细描述了“地点”参数的 4 类正确判断方法,包括根据致危因子的变化判断物种的“地点冶参数、根据亚居群范围判断物种未受影响区域的“地点”参数、根据“地点”的最小尺度判断物种未受影响区域的“地点”参数、根据历史记录预测物种的“地点”参数;并以中国特有植物岩生红豆(Ormosia saxatilis K. M. Lan)为实例对“地点”参数的正确判断方法进行进一步说明。 在此基础上,对“地点”参数正确使用过程中存在的困难进行了讨论分析并提出了该参数的使用建议。

“Location” parameter is one of the most important parameters in IUCN Red List criteria. In evaluation process, there are some problems of ignoring or simplifying role of threatening factors,sometimes only taking some informations, such as specimen record, collection plot number, investigationdata, distribution plot in literature, management and administrative units, to replace “ Location”parameter in application of “Location” parameter, which causes inaccurate of “Location” parameter and even deviating from actual situation. In order to solve these problems, four correct judgment methods of “Location” parameter have been described in detail by schematic diagram, which include judging species “Location” parameter according to threatening factor change, judging species “ Location” parameter of unaffected area according to subpopulation range, judging species “ Location” parameter of unaffected area according to the smallest patch size of “ Location”, and predicting species “ Location” parameter according to historical record. Also, taking the China endemic species Ormosia saxatilis K. M. Lan as a case, further illustration to correct judgment method of “ Location” parameter was carried out. On this basis, difficulty in process of proper application of “Location” parameter is discussed and analyzed, and some useful suggestions have been put forward.