中国蓼族(蓼科)植物区系的研究

根据蓼族植物的生境及分布状况,在全国范围内进行多年的野外考察和标本采集,同时参考前人的研究成果对中国蓼族植物区系进行深入研究。结果表明,中国蓼族植物有12属、170余种及变种,包括发现的多个新种(其中3新种已正式发表,1新种已被植物分类学报接受);同时揭示了其区系特点:(1)分布广泛,在全国各省区从低海拔到高海拔的区域内均有分布;(2)区系具温带性质,以北温带成分为主;(3)全国范围内,四川拥有该族在中国分布的全部12属,种及变种数占全国的51.7%,特有种数占全国的44.4%;云南分布11属占全国的91·7%,种及变种数占全国的62.2%,特有种数占全国的55.6%。这表明西南地区的云南、四川是中国蓼族植物的现代分布中心和多样化中心;(4)中国有该族植物12属,170余种及变种,分别占世界属种数的85.7%和48.0%～58.2%。可见中国(尤其是四川、云南)是世界蓼族植物的现代分布中心和多样化中心。

Study on flora of the tribe Polygoneae (Polygonaceae)in China

Based on the previous research and field investigation,the flora of the tribe Polygoneae was studied and the result indicated the tribe Polygoneae in China contains 12 genus,more than 170 species and varieties,including several new species (3 new species had been published and 1 new species has been accepted on Acta Phytotaxonomica Sinica),and the floristic characters are as follows:(1)Worldwide,particularly every province and region,sea level to alpine,in China;(2)Temperate feature,mainly with north temperate elements;(3)There are 12 genera,88 species and varieties (15 endemic) in Sichuan,while 11 genera,107 species and varieties (20 endemic) in Yunnan,and then Sichuan and Yunnan,located in SW China,is the modern distribution center and diversity center of Polygoneae in China;(4)The number of genera and species of Polygoneae from China account for 85.7% and 48.0%～58.2% respectively of the total in the world,and so China (particularly Sichuan and Yunnan) may be the distribution center and diversity center of Polygoneae in the world.