兰科紫纹兜兰的保育生物学研究

深圳市梧桐山是濒危物种紫纹兜兰(Paphiopedilum purpuratum)仅存的几个自然分布地之一。自1998年10月1日至2002年2月28日，我们在梧桐山选取了9个调查点，对407个基株进行了观察，研究了该地的气候、植被、土壤和其他环境因素与紫纹兜兰之间的关系。观察结果表明，梧桐山地区的紫纹兜兰在次生阔叶林下生长良好；短刺刺腿食蚜蝇(Ischiodon scutellaris)为其有效传粉者；大多数开花的紫纹兜兰均能结果。我们认为，紫纹兜兰生存所面临的主要威胁应该是其生境亦即森林的破坏，而不是其自身存在的生物学缺陷。

Conservation biology of Paphiopedilum purpuratum(Orchidaceae)

Wutong Mountain in Shenzhen City is one of the several remaining natural habitats of the endangered species Paphiopedilum purpuratum. From October 1, 1998 to February 28, 2002, we observed altogether 407 ramets at nine sites. The climate, vegetation, soil and other environmental factors of this place were described and their relation to the observed plants was analyzed. The species was found to be growing very well in the secondary broad-leaved forests. Its flowers were effectively pollinated by Ischiodon scutellaris and most of the flowering plants of this orchid could bear fruits. We conclude that the main threat this species is facing is the destruction of its forest habitat and not limitations of the plants themselves.