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塔克拉玛干沙漠南缘安迪尔故城红柳沙包剖面孢粉分析结果表明:1792年以来,安迪尔故城地区孢粉组成以草本植物花粉为主,灌木植物花粉次之,乔木植物花粉较少,蕨类孢子和水生植物含量较低,植被演化经历了荒漠灌丛~荒漠草原~荒漠灌丛的演替过程。利用转换函数法进行的古气候定量重建结果显示,相对于研究时段的平均值,研究区气候变化经历了3个阶段:1792~1905年为暖干期,气温逐渐上升,年平均气温为10.6~12.6℃,降水量变化在33.4~70.4mm之间,期间出现若干个小的冷暖交替期;1905~1950年气候冷湿,气温下降明显,年平均气温为9.5~11.7℃,降水明显增多,降水量变化在52.9~95.1mm之间;1950年后为暖湿期,气温逐步回升,平均气温为10.2~12.2℃,降水变化在47.3~81.6mm,仍相对湿润。
The pollen analysis of the section of Hongliasha package in the Andean Gucheng on the southern margin of Taklimakan Desert shows that the pollen composition in the Andean Gucheng area is dominated by herbaceous pollens, followed by the shrubbery pollen, arbor less pollen, Fern spores and aquatic plants were low, and the evolution of vegetation experienced the succession process from desert shrub to desert steppe to desert shrub. Quantitative reconstruction of paleoclimate using the transfer function method shows that the climate change in the study area has gone through three stages relative to the average value of the study period: 1792 ~ 1905 is the warm-dry period, the temperature gradually increases, the annual average temperature is 10.6 ~ 12.6 ℃, and precipitation varied between 33.4 ~ 70.4mm. During the period from 1905 to 1950, the climate was cold and wet with the temperature dropping obviously. The annual average temperature was 9.5 ~ 11.7 ℃, the precipitation increased obviously, precipitation The amount of change between 52.9 ~ 95.1mm; 1950 after the warm and wet period, the temperature gradually rose, the average temperature of 10.2 ~ 12.2 ℃, precipitation changes in 47.3 ~ 81.6mm, is still relatively humid.