Effect of increasing rainfall on the thermal-moisture dynamics of permafrost active layer in the central Qinghai-Tibet Plateau

doi:10.1007/s11629-021-6707-5

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	Effect of increasing rainfall on the thermal-moisture dynamics of permafrost active layer in the central Qinghai-Tibet Plateau
	Zhou, Zhi-Xiong 1; Zhou, Feng-Xi1 ; Zhang, Ming-Li1,2,3 ; Lei, Bing-Bing 1; Ma, Zhao 1
	2021-11
发表期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
卷号	18 期号:11 页码:2929-2945
摘要	In the past several decades, the trend of rainfall have been significantly increasing in the Qinghai-Tibet Plateau, which inevitably leads to a change in the surface energy balance processes and thermal-moisture status of the permafrost active layers. However, the influence of mechanisms and associated effects of increasing rainfall on active layers are still poorly understood. Therefore, in this study, a validated coupled numerical water-vapor-heat model was applied for simulating the surface energy components, liquid and vapor water migration, and energy transfer within the permafrost active layer under the action of increasing rainfall in the case of an especially wet year. The obtained results demonstrate that the surface heat flux decreases with the increase in rainfall, and the dominant form of energy exchange between the ground and atmosphere becomes the latent heat flux, which is beneficial for the preservation of permafrost. The increasing rainfall will also cause the migration of liquid and vapor water, and the migration of liquid will be more significant. The liquid and vapor water migration caused by the increasing rainfall is also accompanied by energy transfer. With the increase in rainfall, the decrease in total soil heat flux directly leads to a cooling effect on the soil, and then the upper limit of the frozen soil rises, which alleviates the degradation of permafrost. These results provide further insights into engineering structures, regional ecological climate change, hydrology, and environmental issues in permafrost regions.
关键词	Active layer Rainfall Qinghai-Tibet Plateau (QTP) Thermal-moisture dynamics Numerical modeling
DOI	10.1007/s11629-021-6707-5
收录类别	SCIE
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000720441400010
出版者	SCIENCE PRESS
来源库	WOS
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/150107
专题	土木工程学院
通讯作者	Zhang, Ming-Li
作者单位	1.Lanzhou Univ Technol, Coll Civil Engn, Lanzhou 730050, Peoples R China; 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; 3.Gansu Acad Sci, Geol Hazards Prevent Inst, Lanzhou 730000, Peoples R China
第一作者单位	土木工程学院
通讯作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Zhou, Zhi-Xiong,Zhou, Feng-Xi,Zhang, Ming-Li,et al. Effect of increasing rainfall on the thermal-moisture dynamics of permafrost active layer in the central Qinghai-Tibet Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2021,18(11):2929-2945.
APA	Zhou, Zhi-Xiong,Zhou, Feng-Xi,Zhang, Ming-Li,Lei, Bing-Bing,&Ma, Zhao.(2021).Effect of increasing rainfall on the thermal-moisture dynamics of permafrost active layer in the central Qinghai-Tibet Plateau.JOURNAL OF MOUNTAIN SCIENCE,18(11),2929-2945.
MLA	Zhou, Zhi-Xiong,et al."Effect of increasing rainfall on the thermal-moisture dynamics of permafrost active layer in the central Qinghai-Tibet Plateau".JOURNAL OF MOUNTAIN SCIENCE 18.11(2021):2929-2945.

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