广西植被植物区系研究

广西植被植物区系组成有２１７科，１０２５属，乔木层优势种４３０种。分层统计，乔木层２７８属，灌木层１９８属，草本层４０３属，层间植物１４５属。９２７属种子植物有１４个分布区类型和１９个变型，热带分布占７３．０％，温带分布占２３．８％。分层：乔木层热带分布占７４．１％，温带分布占１９．８％，草本层热带分布占６８．６％，温带分布占２９．８％；泛热带分布４２．５％在草本层，２２．５％在乔木层；热带亚洲分布３７．５％在乔木层，２０．７％在草本层；北温带分布４８．４％在草本层，３０．６％在乔木层；东亚和北美洲间断分布３７．５％在乔木层，１７．５％在草本层；东亚分布４４．４％在草本层，２５．０％在乔木层。以优势种统计，热带分布占３４．８％，南亚热带分布占２８．８％，中亚热带分布占３６．３％。

A STUDY OF VEGETATION FLORA OF GUANGXI

The vegetation flora from Guangxi consist of 217 families, 1 025 genera and 430 dominant species of tree layer. An analysis of various layer of the plant community indicates that there are 278 genera in tree layer, 198 genera in shrub layer, 403 genera in herbaceous and 145 genera in liana. An analysis of 927 genera of the seed plants indicates that the vegetation flora from Guangxi consist of the 14 areal types and 19 subtypes. In 927 genera, the tropical genera makes up 73.0% and the temperate genera 23.8%. In various layers of the plant community, the tropical genera makes up 74.1% and the temperate genera 19.8% in tree layer, the tropical genera makes up 68.6% and the temperate genera 29.8% in herbaceous layer, the pontropic genera make up 42.5% in herbaceous and 22.5% in tree layer, the tropical Asia (Indo-Malaysia ) genera makes up 37.5% in tree layer and 20.7% in herbaceous layer, the north temperate genera makes up 48.4% in herbaceous and 30.6% in tree layer, the east Asia and nouth America disjuncfed genera makes up 37.5% in tree layer and 17.5% in herbaceous, the east Asia genera makes up 44.4% in herbaceous and 25.0% in tree layer. An analysis of 430 dominant species of tree layer indicates that the tropical species makes up 34.8% and the south subtropical species 28.8% and the middle subtropical species 36.3%.