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DOI	10.1002/ldr.4631
	Quantifying the effect of a retrogressive thaw slump on soil freeze-thaw erosion in permafrost regions on the Qinghai-Tibet Plateau, China
	Jiao, Chenglong; Wang, Yizhao; Shan, Yi; He, Peifeng; He, Junlin
发表日期	2023
ISSN	1085-3278
EISSN	1099-145X
起始页码	2573
结束页码	2588
卷号	34 期号:9
英文摘要	Thermokarst terrain is developing at an accelerating pace in the ice-rich permafrost on the Qinghai-Tibet Plateau (QTP), China, and the most dramatic of these terrain-altering thermokarsts is retrogressive thaw slump (RTS). The freeze-thaw erosion (FTE) impacts are sharply increasing on the Plateau due to RTS, especially as a result of the migration of fine sediments in cold climates, these impacts are still not quantified due to the limitation of hydro-thermal-mass transport laws in RTS development. Moreover, it is difficult to assess the impact of RTS on the ecology and environment, especially on soil erosion. This study developed a heat-water-mass transport coupled model of a RTS in the Beiluhe River Region on the QTP, considering the actual topography, water-ice phase change, latent heat, and surface heat exchange layer. Based on the observed data of ground temperature, unfrozen water content, and heat flux, the coupled model herein is practicable for presenting the geotemperature regime and groundwater flow in the RTS area, thereby quantifying the ice-rich permafrost thaw and mass wasting. The results presented indicate that: (1) the seepage velocity of the superficial zone (0-1.5 m depth) is two orders of magnitude higher than that of the permafrost table; (2) the mean ice-rich permafrost thaw volume was 13.4 m(2) from 2016 to 2021; and (3) the cumulative mass transport volume was 22 m(2) from July 2020 to September 2021. In addition, the relation between the FTE (shown as the migration of sediments) and the amount of ground ice ablation can be fitted by an exponential equation. This work proposes a reliable method for quantifying the effect of FTE and is helpful to assess the eco-environmental impacts of RTS.
关键词	freeze-thaw erosion ice-rich permafrost mass wasting Qinghai-Tibet Plateau retrogressive thaw slump thermokarst
英文关键词	SHORT-TERM ABLATION; GROUND ICE; ACTIVE LAYER; SEDIMENT; HEAT
WOS研究方向	Environmental Sciences ; Soil Science
WOS记录号	WOS:000950255200001
来源期刊	LAND DEGRADATION & DEVELOPMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282981
作者单位	South China University of Technology; South China University of Technology; Guangzhou University; South China University of Technology
推荐引用方式 GB/T 7714	Jiao, Chenglong,Wang, Yizhao,Shan, Yi,et al. Quantifying the effect of a retrogressive thaw slump on soil freeze-thaw erosion in permafrost regions on the Qinghai-Tibet Plateau, China[J],2023,34(9).
APA	Jiao, Chenglong,Wang, Yizhao,Shan, Yi,He, Peifeng,&He, Junlin.(2023).Quantifying the effect of a retrogressive thaw slump on soil freeze-thaw erosion in permafrost regions on the Qinghai-Tibet Plateau, China.LAND DEGRADATION & DEVELOPMENT,34(9).
MLA	Jiao, Chenglong,et al."Quantifying the effect of a retrogressive thaw slump on soil freeze-thaw erosion in permafrost regions on the Qinghai-Tibet Plateau, China".LAND DEGRADATION & DEVELOPMENT 34.9(2023).