大别山植物区系的研究

A Study on the Flora of the Dabie Mountains

大别山是我国植物资源较为丰富的地区,特有、古老、孓遗植物较多,该区共有维管植物1,722种,隶属697属、199科。该区属泛北极植物区,中国—日本森林亚区,在中国植物区系分区上,属华东区。该区与华中、西南、日本和北美区系有较为密切的联系。该区系具有热带和亚热带、温带和暖温带的双重性,呈现从亚热带向温带过渡的趋势。整个大别山植物区系、植被组成基本一致,同属华东植物区系、北亚热带植被。中、北亚热带分界线至少在河图辅以南,沿河图辅—桐城—铜陵一线走向。

There are rich plant resources in the Dabie Mountain region with numerous peculiar plants,an- cient plants and solitary plants.It is now known that there are 1722 species of vascular plants includ- hag subspcies,varities and form,which belong to 697 genera and 199 families.It is a part of Pan-Arc- tic floral region,a part of Sino-Japanese forest sub-area,as well as a part of East-China area in terms of the Chinese flora divisions.It Keeps close relations to other floristic regions of the world,such as those of the Central and Southwest China,Japan and North America.The region holds some duality of both the tropics and sub-tropics,and temperate and warm temperate zones,with an inclination of transforming from sub-tropical zone to the temperate one.There is similiar vegetation cover over the whole region,belonging to that of East-Chine of the northern sub-tropical region.The demarcation line between the north and the middle sub-tropical zones in not:Pabie should be marked at least to the south of Hetufu,running as Hetufu—Tongchang—tongling.