Size-structure stability and species coexistence in plant communities

本课题的研究内容是植物群落的大小结构稳定性、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，考虑到植物个体之间的相互作用，建立植物种群（单种）的大小结构动态，然后将植物群落（多种）水平上的生态现象理解为单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如下：1.增长方式与竞争方式关系理论。2.基于扩散模型的热带雨林中三种植物的模拟3.基于矩阵模型的几种森林的种群动态。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.物种共存的模拟纳入间隙动态。8.基于扩散模型和基于矩阵模型的尺寸-结构动力学之间的比较。9.扩散模型和矩阵模型之间的理论关系。10.主要树种大小结构性状与林分结构的关系

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.