摘要
神农架位于湖北西部,素有“华中第一峰”之称,最高海拔3105米。神农架有豆科植物31属56种(不包括栽培种),其中,乔木10种,灌木19种,草本22种和藤本5种。在温带常绿针叶林带内有2种生长,有28种分布在暖温性落叶阔叶和针叶混交林带,52种分布在亚热带落叶阔叶和常绿阔叶混交林带。其中,只有紫云英1种在三个带内都有分布,24种可跨两个分布带。在区系成分中,中国-日本成分16种,中国特有种21种,温带亚洲成分5种,欧亚成分4种,北温带成分3种,热带亚洲成分3种,热带亚洲和热带非洲成分1种,东亚-北美成分1种,西亚至东亚成分1种,中国-喜马拉雅成分1种。神农架豆科植物区系特点是:种类较丰富,成分复杂,特有种多,具明显的过渡特色。
Mt. Shennongiia, situated in the western part of Hubei Province, 31°42'N. 110°35'E, is generally known as 'The highest mountain in Central China'. Its summit is about 3105 m above sea level with a relative height from 1000 to 2000m.The legume flora in Mt. Shennongjia so far known comprises 31 genera and 56 species(except cultispecies). in which 10 are tree, 19 are fruticose, 22 are herb and 5 are liana. Among them 2 species distribute in temperate evergreen needle-leaf forest zone; 28 species in warm temperate deciduous broad-leaf forest zone: 52 species in subtropical deciduous broad-leaf and evergreen broad-leaf mixed forest zone. Astragalus sinica ean grow well in three zones; 24 species can grow across two zones.In the floristic composition, 16 species belong to Sine-Japan component, 21 species are endemic species of China, 5 species belong to temperate Asia component, 4 species belong to Europe-Asia component, 3 species belong to north temperate zone component, 3 species belong to tropical Asia component.Tropical Asia and tropical Africa, east Asia-north America, west Asiaeast Asia component and Sine-Himalayan component comprise 1 species respectively. The floristic features of the Legume flora of Mto Shennongjia are rich in species, comparatively complex in component, rather prolific in endemic species, have obvious transitive character.
出处
《武汉植物学研究》
CSCD
1992年第1期18-24,共7页
Journal of Wuhan Botanical Research
基金
国家自然科学基金
关键词
神农架
区系特点
豆科
Shennongjia
Legume
Floristic feature
