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依据鹤庆ＨＱ孔０～１９ｍ沉积的硅藻资料，建立了７个硅藻组合带。它们记录了近７万年来鹤庆古湖中硅藻植物群的演化及反映的环境。该时期存在４个浮游硅藻繁盛的深水湖时期。与其相间的三个浅水湖时期，以底栖和附着类型硅藻为主，或缺乏硅藻化石。３０～１３ｋａＢ．Ｐ．湖水频繁波动的时期为环境恶化时期。深水湖发生在气候温暖的末次间冰期及全新世大暖期的后半期。冰后期气候回返中的深水湖是西南季风活动的结果。浅水湖时期的气候一般偏暖，如全新世大暖期的前半期为浅水湖，与模拟的大气降水结果一致。
Based on the diatoms deposited at 0 ~ 19m in Heqing HQ wells, seven diatom assemblages were established. They record the evolution and the environment of the diatom flora in Heqing ancient lake in the past 70,000 years. During this period there were 4 shale diatoms in the prosperous period of Sham Shui Po. During the three lagoons, there are mainly benthic and attachment types of diatoms or lack of diatom fossils. 30 ~ 13kaB. P. The period of frequent fluctuations of the lake is the period of environmental deterioration. Sham Shui Po occurred in the warm climate of the last interglacial and Holocene, the second half of the warm-season. Deep-water lakes in the post-ice climate return are the result of southwest monsoon activities. The climate during the shallow lake period is generally warmer. For example, the first half of the Holocene Holocene was a shallow lake, consistent with the simulated atmospheric precipitation.