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湖泊沉积物中色素的含量、种类以及相应的参数是研究湖泊初始生产力和湖泊环境的有效手段之一．本文根据青藏高原东部希门错短柱岩芯XM9201沉积物的色素指标的综合判别，讨论了该地区过去2000多年来的古环境变化过程和特点．对比分析我国东西部气候记载及冰芯研究，探讨了各气候事件表现形式的异同点．
Lake sediment pigment content, type and the corresponding parameters is one of the effective means to study the lake’s initial productivity and lake environment. Based on the comprehensive discrimination of the pigment indexes of Ximengshui XM9201 sediments in the east of Qinghai-Tibet Plateau, the paleoenvironmental changes and characteristics of the past 2,000 years in this area are discussed. A comparative analysis is made on the climatic records and ice core studies in eastern and western China and the similarities and differences of the manifestations of climatic events.