摘要
长柄双花木(Disanthus cercidifolius var.longipes)是金缕梅科(Hamamelidaceae)植物的中国特有单种属植物,被列为国家二级珍稀濒危树种。在野外调查工作的基础上,对南岭4个样地30个样方(10m×10m)的资料进行分析,初步研究了长柄双花木种群的空间分布、密度、年龄结构等特征。结果表明:长柄双花木种群个体分布不均匀,呈集群分布格局;在自然条件或植被保护较好的林分中存活率高;长柄双花木种群在年龄级分布上显示增长型格局,具有明显的发展潜力。
Disanthus cercidifolius var. longipes is an endemic and monotypic genus of Hamamelidaceae,and is listed as a rare and endangered species under state protection （ Category Ⅱ） in China. Data collected from 30 quadrats （ 10m ×10m） of 4 sample sites in Nanling mountains were analyzed to study the population characteristics of D. cercidifolius var. longipes,such as spatial distribution,density,age classes,etc. A static life table for the population was made and a distribution and survivorship curve was drawn in order to make clear dynamic changes of the population characteristics of D. cercidifolius var. longipes. The results showed that the individuals of the population of D. cercidifolius var. longipes was not evenly distributed but in cluster and had a high survival rate in nature or under well-protected vegetation condition. The age classes of D. cercidifolius var. longipes were distributed in a growing pattern,indicating an obvious potential of development.
出处
《热带生物学报》
2013年第1期74-80,共7页
Journal of Tropical Biology
基金
国家自然科学基金项目(31270259
30970191
30470146)
全国大学生"挑战杯"课外科技活动项目
关键词
长柄双花木
珍稀濒危植物
种群特征
物种保护
南岭
Disanthus cercidifolius var. longipes
rare and endangered plant
population characteristics
species protection
Nanling mountains
