摘要
在对缙云山３种含有四川大头茶种群的不同群落调查测定，研究四川大头茶种群年龄结构，繁殖分配，编制静态生命表的基础上，研编了四川大头茶种群的生殖力表，生殖表。对诸生殖参数进行了综合分析，剖析了构成四川大头茶繁殖对策的几个重要组成部分。结果表明：四川大头茶种群在常绿阔叶林中的繁殖寿命最长，适合度最大；四川大头茶种群的生殖值（Ｖｘ），现时生殖值（ｂｘ），剩余生殖值（ＲＲＶ），累积剩余生殖值（ＳＲＲＶ）以及整个生活史的总生殖值（ＴＲＶ）是时间的函数，并受环境制约，诸指标综合反映了遗传特性与环境因素相互作用对四川大头茶特定年龄个体繁殖能力影响的方式和强度，反映了四川大头茶种群繁殖动态规律；存活率ｌｘ与ｂｘ的负相关关系，ＳＲＲＶ与ｂｘ的负相关关系以及生命期望与生殖投资策略的负相关关系进一步反映了较大的生殖投入与较大的死亡概率之间的定量关系。
In Mt.Jinyun three kinds of communities in which Gordonia acuminata population exists were investigated.Based on reproductive allocation and static life table of G.acuminata,the fecundity table and reproductive value table were drown up. Meanwhile we also analyzed each genital index and the important eomponents of reproductive strategy.The results indicate that for G.acuminata population in cvergreen broadleaved forest, the genital life was the longest and the fitness is the largest.The reproductive value, present reproductive value,residual reproductive value,accumulative residual reproductive value and total value for whole life history of G.acuminata were functions of time, and were restricted by the environments.Those indexes synthetically reflected the pattern and level of influences of interaction between heredity characters and environment factors on reproductive ability of special age individual of G.acuminata population, they also reflected its regular pattern of reproductive dynamics. The negative correlation between the survivorship rate (lx) and the present reproductive value (bx), and the negative correlation between life expectancy (ex) and reproductive invest strategy (ORE) reflected that the larger reproductive investment is, the larger mortality probability is.
出处
《植物生态学报》
CAS
CSCD
北大核心
1997年第1期1-8,共8页
Chinese Journal of Plant Ecology
关键词
四川
大头茶
种群
繁殖
适合度
数量特征
Gordonia acuminata,Reproductive strategy,Fitness,Quantitative character.
