缙云山大头茶种群林窗动态的初步研究

A PRELIMINARY STUDY ON GAP DYNAMICS OF Gordonia acuminata POPULATION IN JINYUN MOUNTAIN.

采用空间序列代替时间序列的方法，从种群的斑块结构特征，年龄结构和静态生命表的生存分析等方面，研究了缙云山大头茶种群的林窗动态特点。结论如下：①在常绿阔叶林中，存在着该种群的林窗相循环更替，从而保证了种群的世代延续；②种群生活史中，生存与死亡，死亡密度与危险率都存在着波动起伏，种群数量动态具有不停止的振荡特点；③林窗初期，种群年龄结构处于稳定的平衡态，而在生活史的较长时间内，一直处于不稳定的非平衡态。

This paper used the method of space replacing time to analyze the characteristics of gap structure,age structure and static life table of the population,through which the characteristics of gap dynamics of the population was revealed.the results show as follows:1.In the evergreen broad leaved forests, G.acuminata population is characterized by the cycling regeneration in the gap,which benefits to generation of the population,2.There exist fluctutions.During the life history processes between survival and mortality,mortality function and hazard rate,namely,the population having the characteristics of oscillation,3.At the initial stage of gap,the age structure of the population is in the state of stable equilibrium,on the countrary,in the longer time of lifehistory,it is always in the state of unequilibrium.