喜树苗期种群构件特征研究

通过调查构件生物量、个体生长变化情况及各构件的生长情况,依据Harper的构件理论,对喜树苗期构件种群进行研究,结果表明：(1)喜树苗期构件生物量增长及喜树苗期各构件生长情况的曲线动态图多呈传统的“S”形,符合Logistic增长,只有叶生物量和叶面积动态呈平放的倒“S”形;(2)构件之间及构件与个体之间生物量增长不具同步性;(3)一级枝系统是喜树苗期种群构件的主要组成部分,二、三级枝系统等构件生长缓慢。

Study on Population Module Features in Seeding Stage of Camptotheca acuminata

Based on the observation on the biomass and growth dynamic of modules and individuals, the module population in seeding stage of Camptotheca acuminata was studied, according to Modular Theory of Harper. The results showed that: (1) The curves of biomass increase and growth of different modules most present traditional "S" figure, corresponding to the increase model of Logistic, except for the curves of leaf area and biomass increase which show a flat upside-down "S" pattern: (2) The increase of biomass between modules, or between module and individual, is not synchronous; (3) First-order branch system is the main component in the module population, while low growth rates are observed in second and third-order branch systems.