海南与台湾中国种子植物特有属多样性研究

Research of diversity of endemic seed plants genera to China in Hainan and Taiwan.

为揭示海南与台湾生物多样性形成的机制 ,该文统计了中国种子植物特有属在东南沿海省区的分布 ,分析了海南、台湾与东南沿海大陆的关系 .结果表明 :东南沿海各省特有属植物的相关系数随距离的增大而减小 ,海南和台湾与东南沿海大陆有着千丝万缕的联系 .海南与广东和广西关系最为密切 ,台湾与福建最为密切 ,这种关系与植物区系的联系是一致的 .台湾虽然脱离大陆比海南早 ,其特有属的成分比海南复杂 ,然而特有属数量却比海南少 ,特有化程度也低 ,原因可能是海南更为接近滇东南 -桂西这一特有植物的残遗中心 .台湾特有属与西南、华中地区联系紧密 ,可能与第三纪。

In order to reveal the mechanism of the forming of biodiversity in Hainan and Taiwan, the paper deals with the distribution of endemic seed plants genera to China in southeast area by the sea, and the relations among Hainan, Taiwan and the southeastern mainland. The similarity coefficients decrease with the increase of the distance between provinces in southeastern area. Hainan and Taiwan have close relation with the southeastern mainland. Hainan is nearest to Guangdong and Guangxi Provinces, Taiwan is nearest to Fujian Province, and the relationship agrees with the flora. Although Taiwan broke away from the mainland earlier and it has more complicated endemic plant components, the numbers and extent of endemic genera to China in Taiwan are less than Hainan. The reasons may be that Hainan is near to the center of endemic plants in southeast Yunnan-west of Guangxi. The endemic genera to China in Taiwan are very close to the southwest and the middle of China; it may result from the move of plants from sout hwest to east in Tertiary and Quaternary.