邢台西部山区种子植物区系的性质、特点和起源

Nature,Characteristic and Origin of the Flora of Seed Plants in Xingtai Western Mountain Area

邢台西部山区位于河北太行山脉的南段.研究表明:该区共有野生种子植物93科,393属,823种.其地理成分复杂,区系联系广泛,具明显的温带性质,与热带又有一定的历史渊源,并具有过渡性和古老性.该区系在新生代第三纪的晚期形成,其成分主要由本地起源,部分来源于西南亚热带、南方亚热带-热带和东北寒温带地区,还有少数来源于西部地中海区.

Xingtai western mountain area is situated in the southwest part of Hebei Province. It belongs to the southern area of Taihang mountain ranges. There are 823 species of wild seed plants, belonging to 93 families and 393 genera in area. Its floristic components are complex, showing wide connection with other floras. It shows clear temperate in nature, tropical in origin, and with transitional and ancient characteristics. It is concluded that the flora is originated at late Cretaceous and formed at late Tertiary in the Cenozoic. Its floristic components mainly originated locally, partly came from southwest subtropical zone, and the south tropic -subtropical zone, partly from the northeast cold temperate zone and a few from the west Mediterranean area.