| 基于地貌分类的黄河源区多年冻土层地下冰储量估算 |
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| 引用本文： | 王生廷,盛煜,曹伟,李静,马帅,胡晓莹.基于地貌分类的黄河源区多年冻土层地下冰储量估算[J].水科学进展,2017,28(6):801-810. |
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| 作者姓名： | 王生廷 盛煜 曹伟 李静 马帅 胡晓莹 |
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| 作者单位： | 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; |
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| 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） |
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| 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。
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| 关 键 词： | 地貌分类 黄河源区 多年冻土 地下冰储量 |
| 收稿时间： | 2017-04-27 |
Estimation of permafrost ice reserves in the source area of the Yellow River using landform classification |
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| WANG Shengting,SHENG Yu,CAO Wei,LI Jing,MA Shuai,HU Xiaoying.Estimation of permafrost ice reserves in the source area of the Yellow River using landform classification[J].Advances in Water Science,2017,28(6):801-810. |
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| Authors: | WANG Shengting SHENG Yu CAO Wei LI Jing MA Shuai HU Xiaoying |
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| Institution: | 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 |
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| 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. |
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| Keywords: | landform classification the source area of the Yellow River permafrost underground-icereserves |
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