期刊论文

Study on Ecologic Distibution of Pteridophytes in Shennongjia

中文

江汉学术

2095-5634

2000

03

19-24

本校为第一机构

对鄂西神农架蕨类植物进行的专题研究的结果表明：本区蕨类植物垂直分布 带谱明显，与云南玉龙山相似；生态类型较多；种类丰富，起源较古老，但次 生成分突出；地理成分复杂，相互交错，但以亚热带成分为主，温带成分也有不容忽视的比重，还有一定数量的热带成分参与其中，这表明成分具有多样性 并具有热带亲缘性；鳞毛蕨科、水龙骨科。蹄盖蕨科属种优势明显，三科种类 占其总种数的高比例为本地区蕨类植物区系的一个重要特征；为联系中国一 喜马拉雅和中国一日本区系的桥梁及南部热带、亚热带与北部温带的过渡地 带，是多种区系成分的集中地和扩散中心或亚中心

This is only a prelimiary research of ecologic distribution of the pteridophytes in Shennongjia Mountains in Western hubei Province for the first time. The results are as follows; This region is very abundant in pteridophytes. The flora which originated anciently has a large number of new-born elements, and the phytogeographic Comjponents are complex and inter-located, but major the subtropical elements, as well as a lot of temperate ones joined. And this shows that the ferns flora is diversity in composition and tropic-relative.Dryopteri aceae, Polyodiaceae and Athyriaceae are dominant and ha...