气候变化领域集成服务门户(CCPortal): Risk assessment of potential thaw settlement hazard in the permafrost regions of Qinghai-Tibet Plateau

CCPortal

DOI	10.1016/j.scitotenv.2021.145855
	Risk assessment of potential thaw settlement hazard in the permafrost regions of Qinghai-Tibet Plateau
	Ni, Jie; Wu, Tonghua; Zhu, Xiaofan; Wu, Xiaodong; Pang, Qiangqiang; Zou, Defu; Chen, Jie; Li, Ren; Hu, Guojie; Du, Yizhen; Hao, Junming; Li, Xiangfei; Qiao, Yongping
通讯作者	Wu, TH (通讯作者)，Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China. ; Wu, TH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 Donggang West Rd, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
卷号	776
英文摘要	Climate warming could exacerbate the occurrence of thaw settlement hazard in the permafrost regions of the Qinghai-Tibet Plateau (QTP), which would threaten the stability of engineering infrastructure in cold regions. The risk associated with permafrost settlement, valuable for the regional sustainable development, remains poorly assessed or understood on the QTP. In this study, three common Geo-hazard indices were used to assess the settlement risks in the permafrost regions of the QTP, including the settlement index, the risk zonation index, and the allowable bearing capacity index. However, large spatial differences existed in simulating the risk maps by using the abovementioned Geo-hazard indices. Hence, we developed a combined index (I-c) by integrating the three indices to reduce the uncertainty of the simulations. The results indicated that the ground ice is a critical factor for assessing the settlement risk in permafrost regions. We also applied the Ic to assess the settlement risk along the Qinghai-Tibet Railway (QTR). The proportion of low-risk area along the QTR would be the highest (45.38%) for the future periods 2061-2080 under Representative Concentration Pathway 4.5. The medium-risk area combined with the high-risk area would be accounted for more than 40%, which were located at the boundary of the present permafrost regions. Therefore, the corresponding adaptation measures should be taken to reduce the potential economic losses caused by the high-risk regions to the infrastructure. Overall, the results would present valuable references for engineering design, construction and maintenance, and provide insights for early warning and prevention of permafrost thaw settlement hazard on the QTP. (C) 2021 Elsevier B.V. All rights reserved.
关键词	CLIMATE-CHANGE THERMAL STATE ACTIVE LAYER DEGRADATION MAP
英文关键词	Permafrost; Thaw settlement hazard; Engineering construction; Qinghai-Tibet Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000647608700013
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254472
作者单位	[Ni, Jie; Wu, Tonghua; Zhu, Xiaofan; Wu, Xiaodong; Pang, Qiangqiang; Zou, Defu; Chen, Jie; Li, Ren; Hu, Guojie; Du, Yizhen; Hao, Junming; Li, Xiangfei; Qiao, Yongping] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibet Plateau, Lanzhou 730000, Peoples R China; [Ni, Jie; Du, Yizhen; Hao, Junming; Li, Xiangfei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wu, Tonghua] Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China
推荐引用方式 GB/T 7714	Ni, Jie,Wu, Tonghua,Zhu, Xiaofan,et al. Risk assessment of potential thaw settlement hazard in the permafrost regions of Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2021,776.
APA	Ni, Jie.,Wu, Tonghua.,Zhu, Xiaofan.,Wu, Xiaodong.,Pang, Qiangqiang.,...&Qiao, Yongping.(2021).Risk assessment of potential thaw settlement hazard in the permafrost regions of Qinghai-Tibet Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,776.
MLA	Ni, Jie,et al."Risk assessment of potential thaw settlement hazard in the permafrost regions of Qinghai-Tibet Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 776(2021).