目的：揭示丹霞地貌生境中铁皮石斛的繁育系统及濒危机制。
Objective To reveal the breeding system and endangered mechanism of Dendrobium officinale in Danxia landform.
以森林为生境的稀有濒危植物占66．93％ ； 因生境丧失而受威胁的植物达71 ．65 ％ 。
Of all the plants, 66.93% existed in forests and 71.65% were threatened with damage of habitats.
这些自然生境拥有许多动植物物种，包括具有保护意义的特有、濒危和受威胁物种。
The natural habitats host many species of flora and fauna including endemic, endangered and threatened species of conservation significance.
这些自然生境拥有许多动植物物种，包括具有保护意义的特有、濒危和受威胁物种。
The natural habitats host many species of flora and fauna including endemic, endangered and threatened species of conservation significance.
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