论文部分内容阅读
从５个样地９００ｍ２的调查资料对湘西北蜡梅群落进行了初步分析，结果表明：（１）群落种类组成丰富，共有维管束植物８０科，１３０属，１６６种。地理成分复杂，温带成分略占优势并表现出由热带向温带渐次过渡的性质；（２）外貌特殊，主要由革质、单叶和中型叶为主的落叶高位芽植物所决定，季相交替明显并与其他植被显著不同；（３）群落结构可分为林木层、小灌木层、草本层和地被层，其中林木层还可分为３个亚层，各层均以蜡梅占优势。林木结构分析表明，该群落具有一定的稳定性，属于亚热带区域的一类次生的暖性落叶阔叶灌丛，建议加强保护与开发利用的研究。
The results showed that: (1) The species composition of the community is rich, with a total of 80 families, 130 genera and 166 species of vascular plants. Geographical composition is complex, the temperate component is slightly dominant and shows the gradual transition from tropical to temperate nature; (2) the appearance of special, mainly by the leathery, single leaf and middle leaves dominated by deciduous high budding plants decided by the seasonal alternation (3) The community structure can be divided into forest layer, shrub layer, herb layer and ground cover, in which the forest layer can also be divided into three sub-layers, all layers are dominated by the chimonanthus praecox . The analysis of tree structure shows that this community has a certain degree of stability and belongs to a class of secondary warm deciduous broadleaved shrubs in the subtropical zone. It is suggested to strengthen the research on protection and development.