丹霞山风景地貌的植物区系研究  

A preliminary on the flora of the tourist landform of of Danxiashan, Guangdong, China

作　　者：刘蔚秋[1] 李植华[1] 刘兰芳[1] 

机构地区：[1]中山大学生物系,广州510275

出　　处：《广西植物》1999年第1期15-21,共7页Guihaia

摘　　要：描述了丹霞山植物区系的特征，对其科、属、种进行系统分析，并与邻近地区植物区系作了对比研究，探讨了丹霞地貌对本区植物区系组成成分的影响。丹霞山植物区系体现了华夏植物区系的特征，其表征科有不少同时也是华夏区系的表征科。从属的地理分布区类型来看，以泛热带分布局的比例最高，其次为热带亚洲分布属、东亚分布局及北温带分布属。丹霞山植物区系相对其纬度来说热带性较强，这与其特定的地貌特征有关。另外，本区的苦藓植物较为丰富，据初步统计共有27科70属，其中石生性苔藓分布尤其广泛。In this paper, the basic characteristics of the flora of Danxiashan and the relationships between the flora of Danxiashan and the landform are discussed. Characteristic families op the flora arealso the basic elements of Cathaysian Flora. This indicates that the flora of Danxiashan embodyies the character of elements of Cathaysian Flora. Phytogeographically, 447 genera of seed plants in Danxiashan are classified to 13 distribution types according to Wu Zheng-Yi's a Areal-types of Chinese Genera of Seed Plant'. The main geographical elements are Pantropic (28.05 % ), Tropical Asia (14.64 %) and Old World Tropic (10.99 %). Comparing the composition of this flora with the neighbouring areas shows that the flora of Danxiashan possesses more tropical nature than the other ones at similar situation. This character can be explained by the effect of landform.

关 键 词：丹霞山 丹霞地貌 植物区系 分布区类型 

分 类 号：Q948.5[生物学—植物学]