蓝冠噪鹛（Garrulax courtoisi）是江西特有鸟类，极度濒危，分布仅限于江西婺源，种群呈孤立状态。之前通过形态学研究将其从黄喉噪鹛（G. galbanus）的一个亚种提升为新的物种，但一直缺乏分子证据。因此其分类地位的遗传学确认及其在噪鹛属系统演化中的位置是本研究关注的第一个问题。此外，其孤立种群的成因及种群历史是本研究关注的第二个问题。本研究拟通过线粒体及核基因等多基因标记揭示蓝冠噪鹛分类地位及其与噪鹛属其他鸟类的亲缘关系；并对江西分布的其他噪鹛属鸟类进行种群遗传结构及地理分化研究，确定其江西地理种群的演化特征，结合之前噪鹛属鸟类相关研究结果推测蓝冠噪鹛的种群历史及分布格局成因，探讨江西是否是噪鹛属鸟类冰期避难所，冰期及江西地形对噪鹛属鸟类扩散的影响。为蓝冠噪鹛保护价值的确认及种群动态评估提供科学依据。

The Blue-crowned laughingthrush (Garrulax courtoisi) is an endemic species in Jiangxi Province, which is listed as Critically Endangered by the IUCN Redlist, with an isolated population distributed in several village geomantic forests in Wuyuan. It was treated as a subspecies of the yellow-throated laughingthrush (G. galbanus) before, some scholars have argued that it was morphologically different with the G. galbanus, and suggested it should be rised as a new species and named as G. courtoisi. However, the taxonomic status determination still need genetic evidence. Therefore, the classification of this species and its phylogenetic position in Garrulax are the main issues we concern about in this study. In addition, the isolated population history of this laughinghthrush is the other question we want to reveal. Mutiple genemarkers from mitochondrial and nuclear will be used to construct phylogenetic tree to resovle the first question. The phylogenetic features of the laughingthrushes in Jiangxi province and the populaton history of the blue-crowned laughingthrush will be revealed through results on inner-species' genetice structures and phylogeography of relative species in Garrulax, combined with the previous study results. The impacts of mountains and the last glacial on the phylogeography pattern and population dispersion of laughingthrushes we be discussed in Jiangxi Province. We will provide scientific basis for the protection value determination and population dynamic evaluation of the blue-crowned laughingthrush.