巴山森林植物区系研究

本文首次对于巴山森林植物区系给予较系统的探讨。结果表明，巴山森林植物区系县有丰富性，古老性、过渡性及分异性等特征，应是我国第三纪古热带和温带植物区系的“安居”之地，同时也是古热带、温带植物区系发展及再度分化的重要地段；通过对东亚分布类型的分析，认为本区应是东亚植物区系的东西两大植物区系的交汇处；也是我国东西植物区系交流的重要“甬道”，通过对本区分布的中国特有属对比分析，认为巴山北坡应为“川东—鄂西特有现象”中心的一部分。

A Preliminary Study on the Forest Flora of Bashan Mountains

The study shows the forest flora of Bashan mountains is very rich in sepcieses , woody plants comprises 1147 specieses (including subsp. varieties and form) belonging 296 genera, 105 families. Since the Triassic period,this region has no more been covered by the sea transgression. By the end of the Tertiary period, the majority of Bashan mountains flora had been established,and were toxonomically similar to the recent flora, they seemd to have suffered no severe damage from the subsequent Quaternary glacials, so a great number of relic, ancient and primitive 'specieses have been conserved. There are 6 monotypic families, 25monotypic and 42 oligotypic genera in the region. There are 20 endemic genera. Most of the monotypic, oligotypic genera and endmic genera are phylogenetically ancient or primitive.Geographical elernents are complex and varied. 15 types of floristic region were divided. The composition of Northern and Southern Chinese flora occur in this region. It displays obviously transitive and convergent features, and Bashan mountains is an important divergence area of the temperate and subtropical plants.