中国水生高等植物受危种的研究

Study on the threatened aquatic higher plant species of China

本文根据国际自然和自然资源保护联盟有关受危种类型的划分标准，并参考国内外部分受危种类型的划分原则，试将中国（包括台湾和港澳地区）海域和内陆水体所产水生高等植物受危种划分为７个类型，其中属于灭绝种的有２种，濒危种１６种，易危种３１种，稀有种２２种，未定种４４种，脱险种２１种和外来种１１种。对上述受危种的受危现状与致危因素也进行了初步分析。

Based on the types of threatened species put forward by International Union for Conservation of Nature and Natural Resources(IUCN), the threatened aquatic higher plant species of China were classified into seven types as follows: two extinct (Ex), sixteen endangered (E), thirty one vulnerable(V), twenty two rare (R), forty four indeterminate (I), twenty one out of danger (O) and eleven external(El) species. The factors affecting these threatened species were also discussed.