气候变化领域集成服务门户(CCPortal): Thermal Regime and Variations in the Island Permafrost Near the Northern Permafrost Boundary in Xidatan, Qinghai-Tibet Plateau

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DOI	10.3389/feart.2021.708630
	Thermal Regime and Variations in the Island Permafrost Near the Northern Permafrost Boundary in Xidatan, Qinghai-Tibet Plateau
	Yin, Guoan; Luo, Jing; Niu, Fujun; Lin, Zhanju; Liu, Minghao
通讯作者	Luo, J (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China.
发表日期	2021
EISSN	2296-6463
卷号	9
英文摘要	Although the thermal regime and degradation of permafrost on the Qinghai-Tibet Plateau (QTP) have been widely documented, little information exists regarding the island permafrost in the area. Ground temperatures were therefore measured for 8 years (2013-2020) at a permafrost island and at two contrasting sites in the Xidatan region to elucidate the permafrost in this area. Results indicate that the ground temperatures in the island permafrost were markedly higher than those at the same depth in the nearby marginal permafrost and the interior continuous permafrost. In addition, a distinct increasing trend was observed in the ground temperature of the island permafrost over the past 8 years, and warming was signficanty faster in the deep soil than in the topsoil, indicating a bottom-up degradation pattern in the island permafrost. Moreover, due to the persistent increase in the thickness of the active-layer and the decrease in the depth of permafrost table, the permafrost island abruptly disappeared in 2018, which may be attributed to the anomalously high air temperatures that occurred in 2016 and 2017. The results of this study may provide references for understanding of the thermal regime and degradation process of island permafrost on the QTP.
关键词	ACTIVE LAYER STATE DEGRADATION CLIMATE THAW
英文关键词	frozen ground; active layer; ground temperature; climate change; permafrost degradation; permafrost warming
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000680011200001
来源期刊	FRONTIERS IN EARTH SCIENCE
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/253611
作者单位	[Yin, Guoan; Luo, Jing; Niu, Fujun; Lin, Zhanju; Liu, Minghao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Yin, Guoan,Luo, Jing,Niu, Fujun,et al. Thermal Regime and Variations in the Island Permafrost Near the Northern Permafrost Boundary in Xidatan, Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2021,9.
APA	Yin, Guoan,Luo, Jing,Niu, Fujun,Lin, Zhanju,&Liu, Minghao.(2021).Thermal Regime and Variations in the Island Permafrost Near the Northern Permafrost Boundary in Xidatan, Qinghai-Tibet Plateau.FRONTIERS IN EARTH SCIENCE,9.
MLA	Yin, Guoan,et al."Thermal Regime and Variations in the Island Permafrost Near the Northern Permafrost Boundary in Xidatan, Qinghai-Tibet Plateau".FRONTIERS IN EARTH SCIENCE 9(2021).