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DOI	10.1016/j.geoderma.2021.115083
	Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau
	Zhao, Lin; Hu, Guojie; Wu, Xiaodong; Wu, Tonghua; Li, Ren; Pang, Qiangqiang; Zou, Defu; Du, Erji; Zhu, Xiaofan
通讯作者	Hu, GJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Xizang Plateau, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0016-7061
EISSN	1872-6259
卷号	400
英文摘要	Hydro-thermal characteristics of the active layer are critical during freezing-thawing cycles, causing the moisture and heat exchanges between both permafrost and atmosphere in permafrost regions. There is better understanding of these characteristics in high-latitude permafrost areas, while comparatively little is known in the middle-low latitude areas. Here, we used field monitoring data along with statistical models to quantitatively analyze the hydro-thermal dynamics of the freezing-thawing processes at the Tanggula (TGL) site in permafrost regions of Qinghai-Tibetan Plateau (QTP). This combined approach was used to examine the hydro-thermal characteristics in high-altitude permafrost regions. Our results revealed that the duration of the freezing process was much shorter than that of the thawing process. During freezing-thawing processes, the amplitude variation in soil temperature had a significant logarithmic relationship with depth. There was a significant exponential relationship between soil water content at a depth of 5 cm and monthly precipitation. The averaged energy in the active layer consumed for phase change from water to ice was 145.53 MJ/m(2). Finally, we analyzed the quantitative hydro-thermal characteristics and influential factors during the freezing and thawing processes; the different hydro-thermal processes occurring in high-altitude permafrost regions were compared with those in high latitude permafrost regions. Collectively, these results offer a perspective on the difference in permafrost across different region and also provide a reference for the parameterization of land surface models.
关键词	THERMAL REGIME PERMAFROST PROPERTIES ORGANIC-MATTER COASTAL-PLAIN FROZEN SOIL DECOMPOSITION VARIABILITY PATTERNS GRADIENT IMPACTS
英文关键词	Soil temperature; Soil water content; Active layer; Permafrost; Tibetan Plateau
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000659471100003
来源期刊	GEODERMA
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/254094
作者单位	[Zhao, Lin] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China; [Hu, Guojie; Wu, Xiaodong; Wu, Tonghua; Li, Ren; Pang, Qiangqiang; Zou, Defu; Du, Erji; Zhu, Xiaofan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Xizang Plateau, Lanzhou 730000, Peoples R China; [Wu, Tonghua] Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Lin,Hu, Guojie,Wu, Xiaodong,et al. Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,400.
APA	Zhao, Lin.,Hu, Guojie.,Wu, Xiaodong.,Wu, Tonghua.,Li, Ren.,...&Zhu, Xiaofan.(2021).Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau.GEODERMA,400.
MLA	Zhao, Lin,et al."Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau".GEODERMA 400(2021).