大兴安岭漠河盆地孢粉数据集（距今3万年以来）

中国大兴安岭漠河盆地地是中国典型高纬度多年冻土分布区，漠河BJC-3湿地岩芯记录了区域3万年以来植被演替情况，对于认识我国东北多年冻土区气候与环境演变具有重要参考价值。结果显示区域发生了5次显著变化过程：30.0-27.1 ka BP形成草甸湿地景观，指示气候寒冷湿润；27.1-20.5 ka BP形成针叶林草原景观，指示气候相对寒冷干旱；20.5-11.3 ka BP由针叶林湿地向针阔混交林湿地景观转变，指示气温开 始转暖，但气候仍寒冷湿润；11.3-1.9 ka BP形成针阔混交林湿地景观，指示气候温暖湿润；1.9 ka BP至今形成针叶林湿地景观，指示气候冷凉湿润（76条记录）

The Mohe Basin in the Greater Khingan Range (Daxing'anling) of China is a typical high-latitude permafrost distribution region in the country. The BJC-3 wetland core from the Mohe Basin records the regional vegetation succession over the past 30,000 years, which holds important reference value for understanding the climate and environmental evolution of the permafrost regions in Northeast China. The results reveal five distinct evolutionary processes in the region: 30.0–27.1 ka BP saw the formation of meadow wetland landscape, indicating a cold and humid climate; 27.1–20.5 ka BP witnessed the formation of coniferous forest-steppe landscape, indicating a relatively cold and arid climate; 20.5–11.3 ka BP experienced the transition from coniferous forest wetland to mixed coniferous and broad-leaved forest wetland landscape, marking the onset of temperature warming but remaining cold and humid climate; 11.3–1.9 ka BP formed the mixed coniferous and broad-leaved forest wetland landscape, indicating a warm and humid climate; from 1.9 ka BP to the present, coniferous forest wetland landscape has developed, indicating a cool and humid climate (76 records)