广东大雾岭植物区系的研究

STUDY ON THE FLORA OF DAWULING IN GUANGDONG

粤西信宜大雾岭林区森林茂密、植物种类丰富,据初步调查,大雾岭有野生维管植物184科、629属、1210种.经分析,大雾岭植物区系具有起源古老、种类丰富、区系成分复杂、热带亚热带成分占优势、特有现象明显等特点.与其它区系比较的结果表明,大雾岭区系与海南岛、鼎湖山等热带、南亚热带植物区系联系密切,而与武夷山、神农架等中亚热带、北亚热带植物区系联系较弱.在区系的归属上,大雾岭植物区系隶属于古热带植物区.

In this paper the features and categorisation of the Dawuling Flora are reported . Dawul-ing is located at the south of Yunkai Mountains in the southwest of Guangdong provinoe,at 22°15' N. latitude, 112° 12'E. longitude , with the area about 3 400 hm2 and the highest peak 1 704 m. above sea level. According to the preliminary investigation, there were 184 families, 629 genera,1 200 species of wild vascular plants in the Dawuling Flora. The floristic features of Dawuling were: rich in the number of plant species, ancient in the origination of the flora, complex in the types of geographic distribution,abundant in the endemic species,predominant in tropicsubtropic elements. By comparing with nearby floras such as those of Hainan.Dinghushan,wuyishan,Shennongjia,Dawuling seemed closely related to those of Hainan,Dinghushan,which belong to the Paletropic Flora,but it had feeble relation with that of Shennongjia,which is the representative of the Holarotic Flora, and the auther concluded that it should be a part of the Paletropic Flora.