Abstract: Pollen is a proxy to be used to reconstruct paleoclimate and paleovegetation. According to the available previous research achievements, there are some different points of view in recognizing the Holocene climate and environmental changes indicated by pollen in the Zhuye Lake region. Lacustrine carbonate sediments can be used to reveal the alkaline sedimentary environment, but the alkaline environment can corrode pollen seriously and impact pollen conservation. According to the relationship between carbonate and pollen concentration in lacustrine sediments, it can be explored that whether the regional pollen conservation was affected by carbonate. The results showed that the high carbonate content and the high pollen concentration corresponded with each other in the Zhuye Lake region during the Holocene. Climate was warm and wet in the Zhuye Lake region during the period of lake expansion, and there was a large amount of pollen input, although the alkaline environment corroded pollen seriously and affected pollen conservation. Therefore, the alkaline sedimentary environment was not enough to change pollen concentration. The different midHolocene pollen assemblages at different locations of the lake basin were not resulted in by pollen conservation.

Key words: font-family: 宋体, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, Holocene')">mso-bidi-language: AR-SA">Holocene, ')">Zhuye Lake, ')">lacustrine sediment, ')">carbonate content, pollen conservation