皖西霍山县白马尖植物区系和植被

 本文论述了北亚热带典型地段——大别山主峰白马尖的植被和植物区系的特点,提出白马尖地区是一“生物避难所”。与纬度相近地区的比较研究,结果表明,海拔1000米以上的山地,植被类型和植物区系成份与皖南黄山、浙北天目山较一致,而低海拔地区与江苏的宜溧山区相似,特别是常绿阔叶树的属、种极为一致。值得指出的是耐寒常绿阔叶林类型的发现,为北亚热带植被地带的概念增添了新内容。文中对原圈定佛子岭水库库区周围为水源涵养林自然保护区认为不妥,将白马尖主峰整个集水区包括在内,才是完善的。

Flora and Vegetation of Baimajian, Anhui Province

Baimajian is the highest peak of Dabie Mountain, with an altitude of 1774 meters situated at the southern part of Huoshan County in Anhui Province.A list of vascular plants of Baimajian prepared from different sources contains 173 families, 710 genera, 1450 species (including subspecies, varieties and form). There are 144 families, 662 genera and 1348 species have been nominated. According to their distribution pattern, the total number of genera are classified in to several groups. The floristic characteristic of Baimajian are briefly summarized as follows: 1. The components of the flora are characterized by temperate elements. 2. Those genera of north temperate elements counted as the main components, the tropical genera have a record of 36.6%.The "point-centred quarter method" was adopted and the evergreen broad-leaf forest is found in lower altitude (150–200m.). The deciduous-evergreen mixed forest in mid-altitude (900–1200m.) is distributed. The similarities of floristic elements and vegetation types between Yixing-Liyang (Jiangsu Province) and Baimajian (Anhui Province) exhibit their most closely relationships. We suggest that they are a part of North subtropic vegetation region.