佛坪自然保护区蕨类植物地理分布和区系分析

Geographic Distribution and Floristic Analysis of the Ferns in the Foping Natural Reservation

佛坪自然保护区的蕨类植物水平分布与这一地区的森林分布格局是一致的，垂直分布分为４个带谱。该区蕨类植物区系组成共９５种，隶属于２０科４３属。在区系结构上表现出３个特征：①种系密度大，成分多样；②属的地理成分多样，以温带成分为主，兼具热带、亚热带性质；③该区属于“耳蕨—鳞毛蕨植物区系”

The horizontal distribution patterns of ferns in Foping Natural Reservation corresponds to those of the forest in the area; the vertical distribution can be divided into 4 altitudial belts. The fern flora in this area consist of 95 species, 43 genera of 20 families. The flora structure shows 3 qualities: The density of the species is high, and the components are manifold; the genera of geographical composition are varied with most of temperate species and some of tropical and subtropical ones; the fern flora in this area belongs to ' polysticho Dryopteris flora '.