珠穆朗玛峰国家级自然保护区兰科植物多样性研究

在野外实地调查和室内标本整理以及查阅文献的基础上,对珠穆朗玛峰自然保护区兰科植物多样性进行了初步研究。结果表明:珠穆朗玛峰自然保护区有兰科植物35属63种,以陆生兰(42种)为主,附生兰(19种)和腐生兰(2种)也占有一定比例;属的地理成分可划分为10个类型和2个变型,以北温带分布型(33.3%)和热带亚洲分布型(21.2%)为主;种的地理成分可划分为5个类型和1个变型,以中国-喜马拉雅分布型(64.5%)为主;珠穆朗玛峰自然保护区兰科植物区系成分与南迦巴瓦峰地区联系最为密切,其次为九寨沟自然保护区和贡嘎山自然保护区,与秦岭地区和小黑山自然保护区有一定的联系。

Biodiversity of Orchidaceae of Qomolangma National Nature Reserve

Based on field investigation,specimens and literatures,the diversity of Orchidaceae in Qomolangma National Nature Reserve were studied.It shows that 63 species discovered by investigation fall into 35 genera,in which terrestrial were dominant with 42 species,followed by epiphytic with 19 species,and saprophytic with 2 species;The geographical elements of genera are divided into 10 types and 2 variants,which are dominated by North Temperate (33.3%) and Tropical Asia (21.2%);The geographical elements of species are divided into 5 types and 1 variant,dominated by Sino Himalayan.The Orchid floristic composition has a close relationship with Mt.Namjagbarwa region,following by the Jiuzhaigou National Nature Reserve and Gongga Nature Reserve.It also associates with Qinling area and Mount Xiaoheishan Nature Reserve.