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作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2021, Vol. 43 ›› Issue (6): 1869-1877.doi: 10.7522/j.issn.1000-0240.2021.0062

• 第四纪与行星冰冻圈 • 上一篇    下一篇



  1. 1.辽宁师范大学 地理科学学院, 辽宁 大连 116029
    2.东华理工大学 地球科学学院, 江西 南昌 330013
    3.中国科学院 青藏高原研究所 青藏高原环境变化与地表过程重点实验室, 北京 100101
  • 收稿日期:2020-10-25 修回日期:2021-03-03 出版日期:2021-12-31 发布日期:2022-01-28
  • 通讯作者: 张威 E-mail:tangqianyu6@126.com;zhangweilnu@163.com
  • 作者简介:唐倩玉,博士研究生,主要从事冰川与环境演变研究. E-mail: tangqianyu6@126.com
  • 基金资助:

Glacier scale and paleoclimate reconstruction since Penultimate Glaciation in the Qingshui Valley, Luoji Mountain, western Sichuan

Qianyu TANG1(),Wei ZHANG1(),Liang LIU1,Le CHAI2,Yapeng LI1,Lianqing ZHANG3,Bo SUN1,Hongjie ZHANG1   

  1. 1.School of Geography,Liaoning Normal University,Dalian 116029,Liaoning,China
    2.School of Earth Sciences,East China University of Technology,Nanchang 330013,China
    3.Key Laboratory of Tibetan Environment Changes and Land Surface Processes,Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China
  • Received:2020-10-25 Revised:2021-03-03 Online:2021-12-31 Published:2022-01-28
  • Contact: Wei ZHANG E-mail:tangqianyu6@126.com;zhangweilnu@163.com


川西螺髻山清水沟保存着倒数第二次冰期(MIS 6)、末次冰期早期(MIS 4)和末次冰期晚期(MIS 2)较为完好的冰川沉积序列,该序列为螺髻山地区晚第四纪古环境重建提供了直接依据。基于野外地貌考察和冰川地貌特征确定出古冰川分布范围,计算古冰川物质平衡线高度(ELA),应用P-T模型和LR模型计算出各冰期时段的气温与降水。结果显示:清水沟MIS 6、MIS 4和MIS 2的冰川面积分别为3.44 km2、2.22 km2和1.20 km2,冰川体积分别为0.19 km3、0.12 km3和0.07 km3。各期次的古ELA分别为3 132 m、3 776 m和3 927 m,相对于现代ELA分别下降了1 716 m、1 071 m和920 m。冰川规模受气温和降水的共同影响,MIS 6气温大幅下降(8~12 ℃)是导致该阶段冰川规模最大的原因;MIS 4降水为现在的80%左右,而气温下降幅度(6~7 ℃)小于倒数第二次冰期,冰川规模小于倒数第二次冰期;MIS 2降水仅为现在的60%~80%,降温幅度(4~8 ℃)也不大,因此该阶段冰川规模最小。

关键词: 螺髻山, 物质平衡线高度, 冰川体积, 冰川纵剖面模型, 古气候


Luoji Mountain is located in the eastern margin of the Qinghai-Tibet Plateau and the central part of the Hengduan Mountains. The well-preserved Quaternary moraines in the Qingshui Valley exhibit great potential for reconstructing paleo-glacier extents and examining climate changes in the region. Three sets of moraines were successively preserved, from the cirques to the mouth of Qingshui Valley. These glacial moraines can be assigned to Penultimate Glaciation (MIS 6), early stage of Last Glaciation (MIS 4), and late stage of Last Glaciation (MIS 2). Guided by the Quaternary moraine features, this study used glacier reconstruction tools to reconstruct paleo-glacier surfaces and glacier equilibrium-line altitude (ELA) for three Quaternary glacial stages in the Qingshui Valley. Researchers previously considered modern terrain instead of ancient ice height when employing the accumulation area ratio (AAR) and area altitude balance ratio (AARB) methods to calculate the ELA, which resulted in an underestimation of the ELAs of ancient glaciers. In this study, the AAR and AARB methods were used to calculate the material balance line height during various periods after ancient glacier restoration to increase the ELA calculation accuracy. For 30 years, from 1990 to 2019, temperature and precipitation data from six weather stations of the National Meteorological Data Center demonstrated that the air temperature decline rate was 0.54 ℃·(100m)-1. By combining this data with the precipitation-temperature and temperature lapse-rate models, we obtained the climate conditions of different ice ages. The primary findings are as follows: The surface heights of the glaciers were 2 125~3 826 m, 3 380~4 055 m, and 3 765~4 043 m, the glacier areas were 3.44 km2, 2.22 km2, and 1.20 km2, and the glacier volumes were 0.19 km3, 0.12 km3, and 0.07 km3 during Penultimate Glaciation, early stage of Last Glaciation, and late stage of Last Glaciation, respectively. The ELAs of Penultimate Glaciation, early stage of Last Glaciation, and late stage of Last Glaciation were 3 132 m, 3 776 m, and 3 927 m, which were reduced by 1 716 m, 1 071 m, and 920 m, respectively, compared with the modern ELAs. Scale of the glacier was affected by both temperature and precipitation. The large drop (8~12 ℃) in temperature in MIS 6 was the cause of the largest glacier. The precipitation in MIS 4 was about 80% of the current value, but the temperature drop (6~7 ℃) was smaller than Penultimate Glacial Period, so the glacier scale was smaller than that of Penultimate Glacial Period. The precipitation in MIS 2 was only 60%~80% of the present, and the temperature drop (4~8 ℃) was not large, so the glacier scale was the smallest.

Key words: Luoji Mountain, equilibrium-line altitude (ELA), glacier volume, longitudinal profile model of glacier, paleoclimate


  • P512.4