中国热带-亚热带典型山地垂直植被带表土孢粉散布规律与MIS3阶段以来植被演替过程研究

华南山地是全世界上同纬度分布最广、面积最大、生物多样最复杂的亚热带常绿阔叶林，该区域是研究植被群落在第四纪时空分布格局、历史迁移和扩散规律等的热点之一；是开展古气候学、植物地理和第四纪地质学研究的理想场所。本研究在华南典型山地植被群落调查与垂直带表土孢粉取样分析，分析垂直植被带孢粉散布规律，完善亚热带地区表土孢粉数据库，研究亚热带地区建群植物种类与气候的定量关系，掌握人类活动对植被影响的孢粉谱特征，建立亚热带地区主要孢粉-植被-气候定量关系。对亚热带地区泥炭沼进行高分辨率测年，运用孢粉分析、腐殖化度、碳屑和稳定碳同位素分析等综合方法，探讨华南典型山地植被演变过程及末次盛冰期植被垂直带下降幅度，根据高分辨率孢粉分析结果运用最佳类比法定量重建古气候和建立氧同位素3阶段以来的植被演替序列。

Subtropical southern China is the most important region where there are complex, broadest and primitive subtropical evergreen broadleaved forests in the world. Where is the hotspots to study the spatial distribution pattern, historical migration and success process of vegetation in the Quaternary. In this study, we investigate the vegetation community in the typical mountain and analyze the surface pollen assemble in the vertical belt, establish the surface Pollen Database in the subtropical area. Based on high resolution AMS 14C dating, we perform the pollen analysis, carbon isotope, humification and charcoal for the drilling core in this area. We quantitatively evaluate the spatial distribution, vertical shifts, migration and spreading pathways of vegetation types since MIS3. The modern analogue technique is used to quantitative climate reconstruction based on pollen data. This research will reveal the vegetation response on the glacial-interglacial cycle and the vegetation success from the MIS3.