Life table and survival analysis of Osmanthus fragrans wild population

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.