甘肃博峪河自然保护区种子植物区系

A floristic study of the seed plants in Boyuhe Nature Reserve of Gansu Province

博峪河自然保护区位于甘南藏族自治州舟曲县西部和陇南市文县的西北部,是以保护湿地生态系统和大熊猫及其栖息地为主的自然保护区,总面积91 712 hm2.在调查和参考相关文献的基础上,对本区种子植物区系进行了研究.结果表明,保护区有种子植物1 092种,隶属于497属,116科,其中裸子植物4科10属20种,被子植物112科487属1 072种(双子叶植物101科408属901种,单子叶植物11科79属171种).种子植物区系特征为:①区系组成复杂,类群丰富;②温带性质明显;③起源古老,并兼有年轻成分;④过渡性和交汇性明显;⑤优势科明显,单种属和少种属较多;⑥中国特有种丰富;⑦与西南、华中、华北植物区系联系紧密.

Boyuhe Nature Reserve is located in the western Zhouqu County of Gannan Tibetan Autonomous Prefecture and northwestern Wen County of Longnan City in Gansu Province,which mainly protects wetland ecosystems,pandas and their habitats.The total area is about 91 712 hm2.On the basis of the investigation and references,the flora of seed plants in this nature reserve is studied.The results show that there are 1 092 species of seed plants altogether,which belongs to 497 genera and 116 families.Among them there are ...