安徽大别山多枝尖山区植物区系的研究

多枝尖山区地处大别山腹地主峰分水岭的主段,为筹建中的自然保护区.该区有种子植物1313种(含种下等级),隶属569属,143科,是大别山植物区系中最丰富、最具代表性的地区之一.该区植物区系起源古老,特有现象明显,是南北方植物迁徙的主要通道之一.通过对本区与大别山南北坡及与邻近地区植物区系的对比分析,笔者赞同将整个大别山植物区系划归华东植物区系.赞同将宜昌至襄樊一线作为华东与华中区系的分界线.华东与华北区系的分界线在安徽西部约在大别山以北的霍丘南部,向东经嘉山至苏北一线.并提出天目山、黄山与大别山的植物区系成分趋于一体,大别山西缘的麻城至蕲春一线是华东区系中以天目山,黄山、大别山为核心区的西北边界.

A Study on the Flora of the Duozhijian Mountainous Regions of the Dabie Mountains in Anhui Province

There are 1313 species (including varieties) of Seed plants, which belong to 569 genera and 143 families in the Duozhijian mountainous regions.The origin of its flora is ancient.There are many ancient families and genera, as well as many relic species.Some type of endemic plants of Dabie Mountains were collected in this regions. By means of contrastive analysis of the floristic elements and compared species between Duozhijian mountainous regions and its adjacent floristic regions, we draw a conclusion that: The flora of whole Dabie Mountains comprises a portion of the flora of East China; The flora of Tianmu Mountains, Huangshan Mountains and Dabie Mountains is an organic whole, which belongs to the central part of the flora of East China; the west line of this central part should be from Macheng to qichun in Hubei province; The demarcation line between East China and Central China should be from Yichang to Xiangfan, and the demarcation line between East China and North China in Anhui province should be from South Huoqiu to Jiashan.