This paper studies the chronology and the grain-size of core sediments retrieved from deep area of Selin Co, central Qinghai-Tibetan Plateau (QTP), to reconstruct the lake level changes since 5.33 ka BP. Lake level changes of Selin Co are in several distinct stages: 5.33-4.25 ka BP sees a continuous high lake level with tiny fluctuations; the lake level goes down during the period of 4.25-2.20 ka BP, and the wind contributes much to the sedimentary of Selin Co; 2.20-1.90 ka BP is a stable low lake level period; 1.90 ka BP-present sees a high lake level since 5.33 ka BP with several short and fast fluctuations. 0.1 ka and 0.2 ka cycles are recovered during this period. The low lake level usually lasts for only 20-50 a. The 0.20 ka cycle, which can also be seen in the temperature sequence recorded in the ice core from the QTP, goes through the whole period since 5.33 ka BP, indicating that on the centennial scale, the air temperature is important for the lake level variations of Selin Co.

central Qinghai-Tibetan Plateau  /  Selin Co  /  grain-size  /  lake level change