【作者】 程瑞梅； 肖文发； 郭泉水； 李建文；

【Author】 Cheng Ruimei,Xiao Wenfa,Guo Quanshui,Li Jianwen (Research Institute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry;Key Lab on Forest Ecology and Environmental Sciences,State Forestry Administration,Beijing 100091,China)

【机构】 中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境实验室；

【摘要】 三峡库区消落带是一种特殊的季节性水陆交错生态系统,在野外考察及查阅文献的基础上,对该区内种子植物区系进行了研究。结果显示:三峡库区消落带现有种子植物98科,246属,357种(含种下类群)。其中有裸子植物3科、4属、6种;被子植物95科、242属、351种。三峡库区消落区种子植物科、属、种的数量组成表明该区植物区系成分复杂,分化程度很高。对其科、属分布区类型的划分表明三峡库区消落带98科种子植物可划分为7个分布类型,246属种子植物可划分为14个分布类型,其中温带分布型与热带分布型所占比例较高且基本一致,反映出该区具有明显的地带过渡性。更多还原

【Abstract】 The fluctuating band along riversides of Three Gorges Reservoir Area is a special interleaving water and terrene ecosystem.On the basis of field investigations and literatures references, the seed plant florae are studied.It is shown that there are 357 species,246 genera and 98 families of seed plants,in which there are 6 species,14 genera and 3 families belonging to gymnosperms,and 351 species,242 genera and 95 families belonging to angiosperms.The quantity composition of families, genera and species shows that the fluctuating band is composed of diverse floristic elements.There are 7 areal-types of families and 14 areal-types of generae of seed plants in the fluctuating band,and the temperate and tropic areal-types almost account the same percentage,it means obvious trend of transition in this area.更多还原