Effect of increasing rainfall on the thermal-moisture dynamics of permafrost active layer in the central Qinghai-Tibet Plateau | |
Zhou, Zhi-Xiong1; Zhou, Feng-Xi1; Zhang, Ming-Li1,2,3; Lei, Bing-Bing1; Ma, Zhao1 | |
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 | |
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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