中文摘要：

A 380-cm-long 沉积核心从 Pumoyum 公司的深水区域被获得，南部的西藏。25 件植物残余样品被选择，并且器官的碳马厩同位素用 AMS 14C 被获得按年代先后的方法。14C 年龄和碳水库效果用标明日期的 210Pb 与表面沉积率大小被校准。结果证明核心沉积扔了超过 19 cal ka BP。基于 TOC 和 IC 内容，谷物尺寸和花粉集合数据的多代理分析，自从最后， Pumoyum 公司的 palaeoclimatic 进化被重建冰川。Pumoyum 公司是在 16.2 cal ka BP 以前的一个浅湖；尽管在湖附近的冰河开始由于增加温度融化了，气候仍然冷、干燥。在 16.211.8 cal ka BP 的间隔，沉积环境急速地并且经常波动。二冷事件发生在 14.2 和 11.8 cal ka BP，和这些可以分别地对应于更旧的 Dryas 和更年轻的 Dryas 事件。在 11.8 cal ka BP 以后， Pumoyun 公司发展成它现在是的深湖。因为冷水的流入，湖水温度在那时间是相对更低的。作为结果，多代理指示物没显示出温暖的条件的迹象。在有在南部的西藏的一样的年龄的另外的湖的 Pumoyum 公司的沉积记录之间的比较显示跟随最后冰川的消失的更温暖的气候影响了东南的西藏的高原。这些结果暗示自从冰川的消失，西南亚洲人季风逐渐地在它的扩大期间变得更强壮到内部高原。湖的冰川供应的水对易感知地作出回应冷事件。全部南部的西藏区域在 Holocene 期间是由西南亚洲人季风的主导地影响的气候上。

英文摘要：

A 380-cm-long sediment core was acquired from the deep water area of Pumoyum Co, southern Tibet. Twenty-five plant residue samples were selected, and organic carbon stable isotopes were obtained using the AMS 14 C chronological method. The 14 C age and carbon reservoir effect were calibrated with surface sedimentation rate measurements using 210 Pb dating. Results showed that the core sediment deposited over 19 cal ka BP. Based on a multi-proxy analysis of TOC and IC contents, grain size and pollen assemblage data, the palaeoclimatic evolution of Pumoyum Co was reconstructed since the last glacial. Pumoyum Co was a shallow lake prior to 16.2 cal ka BP; although the glacier around the lake began to melt due to increasing temperatures, climate was still cold and dry. In the interval of 16.2-11.8 cal ka BP, the sedimentary environment fluctuated drastically and frequently. Two cold-events occurred at 14.2 and 11.8 cal ka BP, and these may correspond to the Older Dryas and the Younger Dryas events, respectively. After 11.8 cal ka BP, Pumoyun Co developed into the deep lake as it is now. The lake water temperature was relatively lower at that time because of influx of cold water from glacial meltwater entering the lake. As a result, the multi-proxy indicators showed no sign of warm conditions. Comparisons between the sedimentary record of Pumoyum Co with that of other lakes of the same age in southern Tibet indicate a warmer climate following the last deglaciation influenced the southeastern Tibetan Plateau. These results imply that the southwest Asian monsoon gradually became stronger since the deglaciation during its expansion to the inner plateau. The glacial-supplied water of the lake responded sensitively to cold-events. The entire southern Tibet region was dominantly influenced climatically by the southwest Asian monsoon during the Holocene.