气候变化持续的影响着全球的自然生态系统。适应性进化是物种应对气候变化的最重要方式，因此掌握物种对环境适应的机理可了解其未来的命运。本研究拟选择东亚槭属(Acer L.)物种作为研究材料，探讨环境变异与物种适应性进化的关联性。本研究分为两部分：（1）利用多基因定序对东亚槭属植物进行系统发育重建，并通过生物地理模型检测等方式，对东亚槭属植物的物种形成、迁徙与扩散等进行探讨；（2）挑选不同进化分支下共域分布的物种，分别以中性基因与适应性基因进行检测，分析杂交与基因渗入及物种基因库变化，揭示共域物种间的适应性竞争关系。本研究将为深入理解亚洲大陆物种对气候变化的应对提供基础。

Climate change is altering the natural systems across the globe. For the species, adaptive evolution is one of the most important responses to the changing environment and understanding the mechanism of adaption will help us to forecast the evolutionary trajectories of the species. For discovering the correlation between the environmental change and the adaptive evolution, the highly diversified genus Acer L. of East Asia was chosen as the model for investigating the adaptive evolution as well as their demographic history. Two subtopics of this study go to: (1) sequencing multiple genes to reconstruct phylogenetic trees of Acer and performing analyses of molecular dating, diversification-rate shifts, and biogeographic modeling to infer the speciation, and migration of East Asian maples; (2) separating the neutral and adaptive loci to perform the hybridization and introgression model tests and the demographic computation for the chosen sympatric species to test the adaptively competitive exclusion, which help to understand whether the sizes of adaptive/maladaptive gene pools varied due to adaptively competition through the process of asymmetric hybridization. These results will provide important bases for revealing how species in Asian continent response to the changing environment in this area.