期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2000

26

3

171-177

10.3321/j.issn:1007-1032.2000.03.005

湖南农业大学青年科研基金! （99- 1 0 ）；

本校为第一机构

神农架蕨类植物种类十分丰富,共有308种,隶属34科、75属,其中鳞毛蕨科(5属74种)、水龙骨科(12属53种)、蹄盖蕨科(8属37种)属种优势明显,3科种数共占53.2%,代表了该地区蕨类植物区系的一个重要特征,可作为不同区系相似性的一个重要参考指标;区系起源古老,但次生成分突出,蕨类植物科演化呈现两极分化;地理成分复杂,相互交错,但以亚热带成分为主(共有17科、43属、180种,分别占总科、属、种数的50%,57.3%,58.4%),温带成分也占有较大的比重,还有一定数量的热带成分,这表明成分具有多样性并具有热带亲缘性,表明神农架地区是南部热带、亚热带与北部温带的过渡地带,是联系中国-喜马拉雅和中国-日本区系的...

Monographic studies on the families of pteridophytes of Shennongjia Mountains in the Western part of Hubei Province were made. It is a preliminary research on the Floristic phylogeographics at the level of families(incl. Families as well as genus and species composition,florogenesis, phylogeographyic comparison of pteridophyte,and the relationships between this flora and some other ones ) .The results are as follows:This region is abundant in pteridophytes including 308 species,34 families,75 genera.Among them Dryopteridaceae(5 genera,74 species),Polyodiaceae(12 genera,53 species) and Athyriac...