中国蓼科孢粉地理学研究

根据蓼科１４ 属１６６ 种植物２８ 个花粉类型在中国的地理分布，认为中国西南部是蓼科植物的多度中心和多样化中心，也是中国蓼科植物的起源地，而湖北及邻近省份则是中国蓼科植物的次生分布中心．根据化石花粉资料表明，蓼科的起源时间可能是白垩纪末期或第三世纪初期．此外，根据叉分蓼型、冰岛蓼型、春蓼型、头状蓼型、多穗蓼型、卷茎蓼型、拳蓼型、木蓼型的地理分布，看出了蓼科植物的六条迁移路线．根据一个特定科的花粉类型的地理分布，来研究其分布中心和起源地， 此文尚属首次．

Study on Palyno Geography of Polygonaceae in China

On the basis of the geographical distribution of 166 taxa of 28 pollen types of 14 genera in Polygonaceae, the author considers Southwest China as the area of orgin and early differentiation of almost Polygonaceae except the tribe Atraphaxideae; Kazakstan is considered as the distribution centre and origin centre of the genus Atraphaxis. According to the available data, the origination time of Polygonaceae in China may be during the late Cretaceous or early Tertiary period. According to the study on Palyno geography of Polygonaceae, six migration routes may be recognized. The results obtained on the basis of the geographical distribution of pollen types in Polygonaceae support Wang Wen|tsai's theory (1989, 1992).