Size-structure stability and species coexistence in plant communities

我们的研究课题是植物群落中大小结构稳定、物种共存、更新和演替的过程和机制。本研究的基本思路是：首先建立考虑植物个体间相互作用的植物种群(单物种)大小结构动力学模型，然后在植物群落(多物种)水平上将生态现象理解为单物种大小结构植物种群之间的相互作用。为此，我们采用了扩散方程模型和投影矩阵模型。本课题的主要研究成果有：1.关于增长方式与竞争方式关系的理论。2.基于扩散模型的热带雨林三种植物模拟。3.基于矩阵模型的几种森林种群动态。4.基于矩阵模型的生活史演化分析。5.日本林隙动态特征。6.个体生长变异对物种共存的意义。7.结合林隙动态的物种共存模拟。8.基于扩散模型和基于矩阵模型的尺寸-结构动力学的比较。9.扩散模型和矩阵模型之间的理论关系。10.主要树种大小结构特征与林分结构的关系。

The subjects of our research project are processes and mechanisms of size-structure stability, species coexistence, regeneration and succession in plant communities. Our basic idea for the research is as follows: first, formulate size-structure dynamics in plant populations (single-species) taking into account interactions between individual plants, and then understand ecological phenomena at the level of the plant community (multi-species)as interactions between single-species size-structured plant populations. We employed the diffusion equation model and projection matrix models for these purposes. Main results of our project are: 1. theory on the relationships between the growth pattern and the mode of competition. 2. simulation of three species in rain forests based on the diffusion model. 3. population dynamics of several forests based on matrix models. 4. analysis of life history evolution based on matrix models. 5. characteristics of gap dynamics in Japan. 6. significance of variation in individual growth for species coexistence. 7. simulation of species coexistence incorporating gap dynamics. 8. comparison between size-structure dynamics based on the diffusion model and based on matrix models. 9. theoretical relationships between the diffusion model and matrix models. 10. relationships between size-structure traits of main species and forest structure.