气候变化领域集成服务门户(CCPortal): Long-term role of cooling the underlying permafrost of the crushed rock structure embankment along the Qinghai-Xizang railway

CCPortal

DOI	10.1002/ppp.2027
	Long-term role of cooling the underlying permafrost of the crushed rock structure embankment along the Qinghai-Xizang railway
	Wu, Qingbai; Zhao, Hongting; Zhang, Zhongqiong; Chen, Ji; Liu, Yongzhi
发表日期	2020
ISSN	1045-6740
EISSN	1099-1530
起始页码	172
结束页码	183
卷号	31 期号:1
英文摘要	Understanding the long-term role of cooling the underlying permafrost of the crushed rock structure embankment (CRSE) along the Qinghai-Xizang Railway (QXR) is crucial for the railway's safe operation. The thermal regime of the permafrost under the CRSE is analyzed here using monitoring data of soil temperature from 2005 to 2015. The results show that the CRSE plays an important long-term role in cooling the underlying permafrost under the present climate change conditions; however, different types of CRSEs have different cooling effects. A U-shaped crushed rock embankment and a crushed rock berm embankment with debris rock revetment can maintain the cooling of the permafrost underlying the embankment under a future climate warming of 1.0 degrees C. Moreover, under an increase in air temperature of 0.5 degrees C, a crushed-based rock embankment and a crushed rock revetment embankment can maintain the cooling of the underlying permafrost when its mean annual ground temperature is below -1.0 degrees C. The long-term role of cooling the underlying permafrost of CRSEs indicates that the QXR must use reinforcing engineering techniques to ensure its safe operation and adaptation to a temperature increase of 1.5 degrees C.
英文关键词	artificial permafrost table; climate change; crushed rock; long-term cooling role; permafrost temperature; Qinghai-Xizang railway; rock structure embankment
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS关键词	TIBET RAILWAY ; NATURAL-CONVECTION ; THERMAL REGIME ; CLIMATE-CHANGE ; PLATEAU ; LAYER ; CHINA
WOS记录号	WOS:000497309800001
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
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/240240
作者单位	[Wu, Qingbai; Zhao, Hongting; Zhang, Zhongqiong; Chen, Ji; Liu, Yongzhi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Wu, Qingbai; Chen, Ji] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Beiluhe Observat Stn Frozen Soil Environm & Engn, Lanzhou, Gansu, Peoples R China; [Wu, Qingbai; Zhao, Hongting; Liu, Yongzhi] Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wu, Qingbai,Zhao, Hongting,Zhang, Zhongqiong,et al. Long-term role of cooling the underlying permafrost of the crushed rock structure embankment along the Qinghai-Xizang railway[J]. 中国科学院西北生态环境资源研究院,2020,31(1).
APA	Wu, Qingbai,Zhao, Hongting,Zhang, Zhongqiong,Chen, Ji,&Liu, Yongzhi.(2020).Long-term role of cooling the underlying permafrost of the crushed rock structure embankment along the Qinghai-Xizang railway.PERMAFROST AND PERIGLACIAL PROCESSES,31(1).
MLA	Wu, Qingbai,et al."Long-term role of cooling the underlying permafrost of the crushed rock structure embankment along the Qinghai-Xizang railway".PERMAFROST AND PERIGLACIAL PROCESSES 31.1(2020).