Comparison of permafrost degradation under natural ground surfaces and embankments of the Qinghai-Tibet Highway

被引：19

作者：

Yu, Fan ^{[1
]}

Qi, Jilin ^{[2
]}

Yao, Xiaoliang ^{[1
]}

Liu, Yongzhi ^{[1
]}

机构：

[1] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China

[2] Beijing Univ Civil Engn & Architecture, Res Ctr Engn Struct & New Mat, Beijing High Inst, Beijing 100044, Peoples R China

来源：

COLD REGIONS SCIENCE AND TECHNOLOGY | 2015年 / 114卷

基金：

中国国家自然科学基金;

关键词：

Permafrost degradation; Road embankment; Ground temperature; Climate warming; Qinghai-Tibet Highway; PLATEAU; REGIONS; CHINA; SETTLEMENT; IMPACTS;

D O I：

10.1016/j.coldregions.2015.02.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Permafrost under road embankments often degrades more seriously than that under natural ground surfaces due to the influences of both climate warming and road embankment. In a companion paper, we analyzed the states of permafrost degradation under road embankments in the five typical regions along the Qinghai Tibet Highway (Yu et al., 2013a). In this paper, the states of permafrost degradation under natural ground surfaces, near the road embankments, are analyzed based on up to 15 years of in-situ geothermal data, while that under road embankments are also further analyzed. On this basis, the states of permafrost degradation and related processes are compared between the natural ground surfaces and road embankments. Possible influences of climate warming and road embankment on permafrost degradation are discussed. The results show different characteristics of permafrost degradation under natural ground surfaces and road embankments. The contributions of climate warming and road embankment on the thermal regime of permafrost may vary during the process of permafrost degradation. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1 / 8

页数：8

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