本研究以鼎湖山20公顷固定监测样地连续15年动态监测的南亚热带森林群落为对象，运用分子标记和基因片段比对技术建立准确反映亲缘关系的谱系树，并进行野外调查，测定优势种的关键功能性状，建立功能性状数据库。通过完善测定环境因子和生境条件数据，结合计算机随机化统计检验技术，创新性地以交叉学科的技术和手段，搭建微观与宏观的桥梁，进行进化与生态相关联的研究。首先，在群落不同分类水平（群落、物种、基因组）上，以优势种为原点，计算亲缘距离，结合功能性状进行亲缘种组划分。其次，探索亲缘种组在不同多样性水平上的数量及空间分布，明晰其相互作用关系。进而探寻不同时间（群落演替阶段）和空间（取样尺度）上亲缘种组的数量和分布规律。旨在验证不同分类尺度和时空尺度上物种共存的机制是否存异，进一步寻找群落中物种共存的共同作用规律。最终揭示亲缘关系在群落各个尺度（分类水平、时间、空间）上对物种共存和多样性维持的

This study was carried out in a 20ha subtropical forest plot in Dinghushan Mountain, based on the dynamic monitoring data in the subtropical forest community for 15 years. We use molecular marker and gene fragment analysis to set up family tree which can accurately reflect the genetic relationship.At the same, we carry out outdoor and indoor ecological control experiment to determination the key function traits of the dominant species in our community, after that, creating their function character database. Continue to obtain and complete environmental factors and habitat conditions data, combining with computer randomization statistical test technology. By an innovative use of interdisciplinary technology and means to set up a bridge of micro and macro field, and use a research method that associated with evolution and ecology, carry out a research into different classification level (community, species and gene). First, focus dominant species as the origin point, clustered and divided other species into groups with different degrees of phylogenetic relatedness to the constructive species in whole community. we explore the quantitative and spatial distribution of species genetic group at different biodiversity levels. And then, discover the relationship among species genetic group and the role played by constructive species. And then, find out the quantitative and spatial distribution of species genetic group at different time scale (community succession stages), and spatial scale (different sampled scales). We aimed to verify is there a difference or same law exist on the mechanism of species coexistence of subtropical forest. Furthermore, we want find out the same law of function on species coexistence. Finally, discover the role of relative genetic species played on species coexistence and biological diversity maintenance at different community classification level, time and spatial scales.