摘要
研究了二滩水库区的维管植物区系有野生维管植物约１７６科、７０７属、１３９２种其中蕨类植物１１４种，占总数的８１９％；裸子植物２６种，占总数的１８７％；被子植物１２５２种，占总数的８９９４％从库区维管植物种的生活型组成丰富程度来看，乔木２０９种，占总数的１５０１％；灌木２５１种，占总数的１８０３％；草本８２５种，占总数的５９２７％；藤本１０７种，占总数的７６９％从二滩水库区种子植物科、属现代地理分布来看，科的地理分布是热带成分大于温带成分，而属的地理分布则是温带成分大于热带成分这说明热带分布科中的单种、少种属多，孑遗植物多。
The authors studied the flora of vascular plants in Ertan Reservoir Area.There are 1392 vascular plant species of 707 genera of 176 families,among which,114 species belong to pteridophyte,26 gymnosperma and 1252 angiosperma which account for 8.19,1.87 and 89.94 per cent of the total number of species respectively.As to the life forms,there are 209 species belonging to trees,251 shrubs,825 herbs and 107 liana,which account for 15.01,18.03,59.27 and 7.69 per cent of the total progressively.As for the modern geographical distribution of genera and families of seed plants,the tropical composition is more than the temperate composition of families,while in contrast of genera,which shows that,genera with single or few species and relic species of tropical distribution families are rich,and the flora is quite primitive.
出处
《四川师范学院学报（自然科学版）》
1998年第1期16-26,共11页
Journal of Sichuan Teachers College(Natural Science)
