气候变化领域集成服务门户(CCPortal): The cooling effect of crushed rock structures on permafrost under an embankment

CCPortal

	The cooling effect of crushed rock structures on permafrost under an embankment
	Wu, QingBai; Li, MingYong; Liu, YongZhi
发表日期	2009
ISSN	1674-3822
起始页码	39
结束页码	50
卷号	1 期号:1
英文摘要	Based on the analysis and comparison of soil temperature, thermal regime and permafrost table under the experimental embankment of crushed rock structures in Beiluhe, results show that crushed rock structures provide an extensive cooling effect, which produces a rising permafrost table and decreasing soil temperatures. The rise of the permafrost table under the embankment ranges from an increase of 1.08 m to 1.67 m, with an average of 1.27 m from 2004 to 2007. Mean annual soil temperatures under the crushed rock layer embankment decreased significantly from 2005 to 2007, with average decreases of -1.03 degrees C at the depth of 0.5 m, -1.14 degrees C at the depth of 1.5 m, and -0.5 degrees C at the depth of 5 m. During this period, mean annual soil temperatures under the crushed rock cover embankment showed a slight decrease at shallow depths, with an average decrease of -0.2 degrees C at the depth of 0.5 m and 1.5 m, but a slight rise at the depth of 5 m. After the crushed rock structures were closed or crammed with sand, the cooling effect of the crushed rock layer embankment was greatly reduced and that of the crushed rock cover embankment was just slightly reduced.
英文关键词	cooling effect; crushed rock structure; permafrost
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS关键词	QINGHAI-TIBET HIGHWAY ; REGIONS
WOS记录号	WOS:000422247300005
来源期刊	SCIENCES IN COLD AND ARID REGIONS
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/240229
作者单位	[Wu, QingBai; Li, MingYong; Liu, YongZhi] Chinese Acad Sci, Cold & Arid Reg Environm Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wu, QingBai,Li, MingYong,Liu, YongZhi. The cooling effect of crushed rock structures on permafrost under an embankment[J]. 中国科学院西北生态环境资源研究院,2009,1(1).
APA	Wu, QingBai,Li, MingYong,&Liu, YongZhi.(2009).The cooling effect of crushed rock structures on permafrost under an embankment.SCIENCES IN COLD AND ARID REGIONS,1(1).
MLA	Wu, QingBai,et al."The cooling effect of crushed rock structures on permafrost under an embankment".SCIENCES IN COLD AND ARID REGIONS 1.1(2009).