气候变化领域集成服务门户(CCPortal): Responses of permafrost an the qinghai-tibet plateau, China, to climate change and engineering construction

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DOI	10.1657/1523-0430(07-508)[WU]2.0.CO;2
	Responses of permafrost an the qinghai-tibet plateau, China, to climate change and engineering construction
	Wu, Qingbai; Dong, Xianfu; Liu, Yongzhi; Jin, Hujun
发表日期	2007
ISSN	1523-0430
EISSN	1938-4246
起始页码	682
结束页码	687
卷号	39 期号:4
英文摘要	Monitoring of permafrost along the Qinghai-Tibet (Xizang) Highway shows that there is a large difference in the response of permafrost to climate change and to engineering construction. The change in cold (< - 1.5 degrees C) permafrost is greater than that in warm (>= - 1.5 degrees C) permafrost under the effect of climate change, while the cold permafrost is less sensitive to the disturbances from engineering activities. However, warm permafrost is very sensitive to both climate warming and the impacts from engineering construction. This is because engineering construction has more immediate and direct impacts on the thermal and moisture regimes of underlying permafrost, and consequently greater influence than climate change during the first few years after engineering construction. Assuming constant annual rates of warming, the surface of cold permafrost would approach the warming due to engineering construction in 50 yr, while it would take about 20 yr in areas with warm permafrost. At a depth of 6 m, the temperature rise under engineered surfaces would be reached within 20 and 5-8 yr in cold and warm permafrost, respectively. Therefore, the warming immediately following disturbances of engineering construction would occur naturally in a few years under warm permafrost, but it would take decades for cold permafrost to have the similar thermal effects. Therefore, climate change will have more direct and immediate impacts on the thermal regime of warm permafrost and on the stability and reliability of engineering infrastructures above warm permafrost.
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
WOS类目	Environmental Sciences ; Geography, Physical
WOS记录号	WOS:000250962500021
来源期刊	ARCTIC ANTARCTIC AND ALPINE RESEARCH
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/240214
作者单位	Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wu, Qingbai,Dong, Xianfu,Liu, Yongzhi,et al. Responses of permafrost an the qinghai-tibet plateau, China, to climate change and engineering construction[J]. 中国科学院西北生态环境资源研究院,2007,39(4).
APA	Wu, Qingbai,Dong, Xianfu,Liu, Yongzhi,&Jin, Hujun.(2007).Responses of permafrost an the qinghai-tibet plateau, China, to climate change and engineering construction.ARCTIC ANTARCTIC AND ALPINE RESEARCH,39(4).
MLA	Wu, Qingbai,et al."Responses of permafrost an the qinghai-tibet plateau, China, to climate change and engineering construction".ARCTIC ANTARCTIC AND ALPINE RESEARCH 39.4(2007).