摘要
为了研究福建省长汀县石峰寨风景区的桂花种群动态和数量特征,该文以种群生命表及生存分析理论为基础,编制桂花种群静态生命表,绘制存活曲线、死亡率曲线、亏损率曲线、死亡密度函数曲线、积累死亡函数曲线和危险率函数曲线,分析种群生命过程.结果表明,桂花有1个死亡高峰,存活曲线趋于Deevey-Ⅱ型;并应用谱分析方法研究桂花种群动态,结果表明,在桂花种群自然更新过程中存在着明显的周期性.桂花种群在群落中占优势地位的原因与其生物学特征、丰富的种子库、适宜的环境条件等有关.
In order to study the population dynamic and quantitative characteristics of Osmanthus fragrans in Shifengzhai of Changting County, Fujian Province, based on the life table of population and the theory of survival analysis, a static life table of O. fragrans was worked out and the curves of survival, mortality rate, lose rate mortality density function, cumulative mortality function, as well as risk rate function were drawn in this paper. Meanwhile, the life process of O. fragrans population was analyzed. Results show that the population has one peak of mortality, and survival curve of the population trends to the type of Deevey-Ⅱ. Then spectral analysis of the population dynamics of O. fragrans was made, which shows that there is a marked regularity of periodic fluctuation in the process of natural regeneration of O. fragrans. Moreover, the reasons that the population dominated in the community are related to the biological characteristics and abundant seed pool of the population, appropriate surroundings, etc.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2007年第3期185-188,共4页
Journal of Beijing Forestry University
基金
福建省教育厅科研基金项目(K02047)
中国博士后科研基金项目
福建省科技厅重大基金项目(2001F007)
关键词
桂花种群
生命表
生存分析
Osmanthus fragrans population, life table, survival analysis
