四川黄龙地区种子植物区系特征商榷

Discussion on Flora Characteristics of Seed Plant in Huanglong Region, Sichuan Province

通过实地调查和资料统计,对黄龙地区种子植物区系特征进行了分析,主要结论为:在中国植物区系地理分布中属泛北极植物区中国–喜马拉雅森林植物亚区,此处所代表的区系是温带植物区系、中亚植物区系、东亚植物区系的交汇地区,种子植物种类丰富,古老孑遗成分和进化成分并存,地理成分复杂,物种分化强烈,是横断山区种子植物区系的缩影;种子植物区系以温带性质为基本特征,温带分布的各种分布型都存在,其中又以北温带为主,同时与热带区系、东亚区系、中亚、地中海植物区系均有联系;受横断山区植物区系的影响,本地区中国特有成分繁多。本文提出了与文献资料不同的结论,供商榷。

Through field inventory and statistics, this paper analyzed the characteristics of seed flora in Huanglong region. The results show that: In Chinese plantage geographical distribution, the flora of seed plant in Huanglong Region belongs to the China-Himalayan Sub-area, Pan-Arctic plant area. The flora in this region is the confluence of temperate flora, central Asian flora and East-Asian flora, with a variety of seed plants species, a great differentiated degree of species, the ancient and relict and evolutionary components coexisting, the complex of geographical composition, which make it become the epitome of the seed plant flora in Hengduan Mountains. The seed plant flora is characterized by temperate, and various distribution patterns exist, among which the north tem-perate zone is dominated;it is also associated with East Asian, Central Asian, and Mediterranean flora. Affected by the flora of Hengduan Mountains, the flora possesses numerous components en-demic to Chinese. This paper presents different conclusions from other literatures, for discussing.