四川老君山自然保护区种子植物的区系组成

Seed-Plant Flora Composition of Laojunshan Natural Reserve in Sichuan Province

四川屏山老君山国家级自然保护区原始常绿阔叶林受人类活动干扰少但受冰雪灾害干扰大,在亚热带常绿阔叶林中具有较高的科研价值.采用现场调查与资料收集的方法,对保护区内种子植物进行调查,共鉴别出种子植物114科、393属、746种.该保护区植物类型呈现温带和热带生态交错带特征,温带和热带区系共存,种子植物区系成分多样性高,单型属和少型属多,古老区系成分较多.植物种类及群落分布特征适合大熊猫、四川山鹧鸪等珍稀保护动物生存,自然保护区是周围受人类破坏植物的天然种子库.

The primitive evergreen broadleaved forest in Laojunshan national natural reserve, Pingshan county, Sichuan province, which is seldom disturbed by human activities but largely by snow and ice, has relatively high scientific re- search value in subtropical evergreen broadleaved areas. By the method of field investigation of the seed-bearing plants and data collection, 1 Zd species, 393 genera and 746 families of seed-bearing plants were found. The results show that the plants of temperate and tropical zones in the area are in interlacing distribution and in co-existence, and that the flor- as of seed-bearing plants are various, monotypic genera and little type genera are rich, and ancient faunas are relatively rich. The distribution feature of plant species and coenosium are suitable for the existence of precious animals, such as pandas, Arborophila rufipectus, etc. Laojunshan is the natural seed bank of the plants in the vicinity which are being dam- aged by human activities.