中中新世气候转型（MMCT）是地球新生代气候三次台阶式变化当中非常重要的一次演化事件，然而，由于缺乏亚洲陆相连续包含整个中中新世气候转型期的高分辨率气候记录，目前我们对亚洲内陆地区这一时期的气候特征认识仍然非常薄弱。通过对青藏高原东北缘武山盆地已有古地磁年代控制的南峪剖面（16.8-13.2 Ma）进行高密度孢粉样品的分析，获取亚洲内陆地区包含整个中中新世气候转型期高分辨率的孢粉记录，并运用共存分析法（Coexistence Approach），定量恢复中中新世气候转型期研究区气候变化特征；结合研究区和全球已有地质环境资料，进行海陆对比，探讨其演化机制。这不仅对深刻理解亚洲内陆地区中中新世气候转型期的气候演化过程至关重要，而且对进一步探讨全球降温期陆地生态系统响应过程以及亚洲内陆干旱化和东亚季风的起源和发展过程等重大科学问题具有重要意义。

The middle Miocene climate transition (MMCT) is one of three major steps in Earth's Cenozoic climate evolution, however, the climate history during this period of Asian interior remains unclear as a result of lack of high-resolution climatic records. To address this problem, a high-resolution pollen record covering the period of MMCT will be obtained from Wushan Basin, NE Tibetan Plateau, based on the high density paleomagnetism measurements and palynology research. To obtain quantitative palaeoclimate data that can describe the dynamic characteristics of climate evolution during MMCT, the Coexistence Approach will be applied to this pollen records. The evolution mechanism will be discussed based on existing geological environment record including regional and global. This work is not only important for understanding the course of climate evolution during MMCT of Asian interior, but also for exploring the response of terrestrial ecosystem to global cooling and the origin and development of aridification of Asian interior and East Asian monsoon.