Biodiv Sci ›› 1998, Vol. 06 ›› Issue (1): 13-21.DOI: 10.17520/biods.1998003

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Study on the threatened aquatic higher plant species of China

YU Dan1), CHONG Yun-Xiao1), TU Mang-Hui1), WANG Xiao-Yan2), ZHOU Xiao-Hua2)   

  1. 1) Environmental Science Department , Wuhan University , Wuhan  430072
    2)Administration of Wild Aquatic Animals and Plants , Ministry of Agriculture , Beijing 100026
  • Received:1997-02-03 Revised:1997-06-04 Online:1998-02-20 Published:1998-02-20

Abstract: 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.