关键词: 地面芽植物, 群落学特点, 亚热带, 高位芽植物, 重要值指数, 丘陵山地, 合理利用, 地下芽植物, 酸性土, 野古草

Abstract: The subtropical grass-heath is formed after evergreen broad-leaf forest and mountain mixed evergreen and deciduous broad-leaf forestare cut. It is quite evident that this grass-heath is a successive stage in the developmental process of subtropical forest. Analysis of its phytocoenological features shows that its physiognomy is characterized by herbaceous, simple-leaved, microphyllous type of winter withered hemicryptophytcs with erect stem, Phanerophytes also occupy certain proportion, especially with much deciduous broad-leaf nanophanerophytes. As for the structure of the community, in the general, there is only one layer, namely the herbaceous layer,But synusia structure is also considerably complex, having different kinds of herbs and shrubs. Floristic compositions of the community is dominated by East Asia elements and endemic subtropical plant species, among which Gramineae, Hicriopteriaceae and Pteriaceae occupy important position, and Compositae and Cyperaceae also play a certain role. This indicates that its subtropical nature is very obvious as shrubs intrude rapidly into the community in tireless case, grass-heath will be replaced by bush. It must be realized that diversification is an appropriate measure for the rational utilization of this grass-heath, including agriculture, forestry and animal husbandry etc. and their combination according to concrete condition of different regions.