气候变化领域集成服务门户(CCPortal): Hydrothermal Dynamics of Seasonally Frozen Soil With Different Vegetation Coverage in the Tianshan Mountains

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DOI	10.3389/feart.2021.806309
	Hydrothermal Dynamics of Seasonally Frozen Soil With Different Vegetation Coverage in the Tianshan Mountains
	Ma, Shen; Yang, Bin; Zhao, Jingyi; Tan, Changhai; Chen, Ji; Mei, Qihang; Hou, Xin
通讯作者	Chen, J (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Beiluhe Observat & Res Stn Frozen Soil Engn & Env, Lanzhou, Peoples R China. ; Chen, J (通讯作者)，Univ Chinese Acad Sci, Beijing, Peoples R China.
发表日期	2022
EISSN	2296-6463
卷号	9
英文摘要	The hydrothermal relationship between vegetation and seasonal frozen soil is one of the key research contents in the fields of permafrost ecological environment, hydrology and climate change in alpine mountainous areas. Based on the monitoring data of air temperature, precipitation and soil hydrothermal conditions at the depth of 0-5 m from site TS-04 (with high vegetation coverage) and site TS-05 (with low vegetation coverage) in the alpine grassland of the Tianshan Mountains, this study compared and analyzed the characteristics of freezing-thawing process, temperature and moisture changes of seasonal frozen soil with different vegetation coverage. The results show that the maximum seasonal freezing depth of the two sites is almost comparable, but site TS-04 has a smaller freezing and thawing rate, and a shorter duration of freeze-thaw at all depths. TS-04 also has a smaller annual range of surface temperature and ground-air temperature difference. The analysis indicates that vegetation acts as a thermal buffer and has a good thermal insulation effect on the ground surface. Site TS-04 had high unfrozen water content in the unfrozen period and the water content increased with depth, while the unfrozen water content was low in site TS-05. In addition, the thresholds of soil water content response to rainfall events at 5 cm depth of site TS-04 and site TS-05 were 5 and 11 mm precipitation respectively, which indicated that the high vegetation coverage is conducive to rainwater infiltration, and the underlying soil of the site has a faster response to rainfall events.
关键词	QINGHAI-TIBET PLATEAU ALPINE GRASSLAND PERMAFROST SURFACE WATER SNOW TEMPERATURE NITROGEN REGION
英文关键词	frozen ground; vegetation coverage; soil freezing-thawing cycle; hydrothermal process; Tianshan Mountains
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000756090300001
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/254191
作者单位	[Ma, Shen; Zhao, Jingyi; Chen, Ji; Mei, Qihang; Hou, Xin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Beiluhe Observat & Res Stn Frozen Soil Engn & Env, Lanzhou, Peoples R China; [Ma, Shen; Zhao, Jingyi; Chen, Ji; Mei, Qihang; Hou, Xin] Univ Chinese Acad Sci, Beijing, Peoples R China; [Yang, Bin; Tan, Changhai] China Geol Survey, Command Ctr Comprehens Nat Resources Survey, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ma, Shen,Yang, Bin,Zhao, Jingyi,et al. Hydrothermal Dynamics of Seasonally Frozen Soil With Different Vegetation Coverage in the Tianshan Mountains[J]. 中国科学院西北生态环境资源研究院,2022,9.
APA	Ma, Shen.,Yang, Bin.,Zhao, Jingyi.,Tan, Changhai.,Chen, Ji.,...&Hou, Xin.(2022).Hydrothermal Dynamics of Seasonally Frozen Soil With Different Vegetation Coverage in the Tianshan Mountains.FRONTIERS IN EARTH SCIENCE,9.
MLA	Ma, Shen,et al."Hydrothermal Dynamics of Seasonally Frozen Soil With Different Vegetation Coverage in the Tianshan Mountains".FRONTIERS IN EARTH SCIENCE 9(2022).