基于地貌分类的黄河源区多年冻土层地下冰储量估算

王生廷; 盛煜; 曹伟; 李静; 马帅; 胡晓莹

doi:10.14042/j.cnki.32.1309.2017.06.001

基于地貌分类的黄河源区多年冻土层地下冰储量估算

王生廷^1,2,
盛煜^1,,
曹伟¹,
李静¹,
马帅^1,2,
胡晓莹^1,2

1.
中国科学院西北生态环境资源研究院冻土工程国家重点实验室, 甘肃兰州 730000;
2.
中国科学院大学, 北京 100049

基金项目: 中国科学院重点部署项目（KZZD-EW-13）；国家自然科学基金资助项目（91647103）

详细信息

作者简介:
王生廷(1989-),男,甘肃武威人,博士,主要从事冻土工程与环境研究。E-mail:wangshengting@lzb.ac.cn

通讯作者:
盛煜,E-mail:sheng@lzb.ac.cn

中图分类号: P642.14
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出版历程
- 收稿日期: 2017-04-26
- 刊出日期: 2017-11-24

Estimation of permafrost ice reserves in the source area of the Yellow River using landform classification

1.
State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environmental and Resources, CAS, Lanzhou 730000, China;
2.
University of the Chinese Academy of Sciences, Beijing 100049, China

Funds: The study is financially supported by the Chinese Academy of Science Key Research Program(No.KZZD-EW-13) and the National Natural Science Foundation of China (No.91647103).

摘要

摘要: 地下冰作为多年冻土区别于其他土体的显著特征，对寒区水文、生态环境和工程建设等都有深刻影响。为准确估算多年冻土层地下冰储量，基于黄河源区地貌及其成因类型，结合岩性组成、含水率等105个钻孔的野外实测数据，估算了黄河源区多年冻土层3.0~10.0 m深度范围内地下冰储量，并讨论了浅层地下冰的空间分布特征。研究结果表明：黄河源区多年冻土层3.0~10.0 m深度范围内地下冰总储量为（49.62±17.95） km³，平均单位体积含冰量为（0.293±0.107） m³/m³；在水平方向上，湖积湖沼平原、冰缘作用丘陵等地貌单元含冰量较高，而侵蚀剥蚀台地、冲洪积平原等地貌单元含冰量较低；在垂向上，多年冻土上限附近含冰量较高，并随深度呈减小的趋势。
- 地貌分类 /
- 黄河源区 /
- 多年冻土 /
- 地下冰储量
Abstract: Ground ice is a distinguishing characteristic of permafrost soil.As permafrost profoundly influences the hydrology, ecology and engineering design in cold regions, it is important to accurately estimate the underground ice reserves of permafrost.Thus, this study investigated landforms and their genetic types in the source area of the Yellow River.The lithologic composition and water content were analyzed using field data from 105 boreholes.The underground ice reserves at depths of 3.0-10.0 m were estimated in the source area of the Yellow River.This research also focused on the spatial distribution of shallow underground ice.The results show that ① the total amount of ice reserves at depths between 3.0 and 10.0 m was approximately (49.62±17.95) km³ and the ice reserve per unit was (0.293±0.107) m³; ② in the horizontal direction, high ice contents were associated with lacustrine-marshland plain and periglacial hill landforms, while low ice contents correlated with erosional platform and alluvial-proluvial plain landforms; and ③ in the vertical direction, high ice contents were observed close to the upper limits of permafrost and gradually decreased with depth.
- landform classification /
- the source area of the Yellow River /
- permafrost /
- underground-icereserves