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DOI	10.1016/j.catena.2021.105668
	Soil water content in permafrost regions exhibited smaller interannual changes than non-permafrost regions during 1986-2016 on the Qinghai-Tibetan Plateau
	Liu, Guimin; Wu, Xiaoli; Zhao, Lin; Wu, Tonghua; Hu, Guojie; Li, Ren; Qiao, Yongping; Wu, Xiaodong
通讯作者	Wu, XD (通讯作者)，320 West Donggang Rd, Lanzhou 730070, Peoples R China.
发表日期	2021
ISSN	0341-8162
EISSN	1872-6887
卷号	207
英文摘要	Permafrost is an important factor affecting soil hydrology in cold regions, while the effects of permafrost on temporal changes in soil water content largely remain unknown. Here, based on the calibrated Climate Change Initiative (CCI) soil moisture products using field observation soil water data at 5 cm depth from 8 representative sites, we examined changing trends of climate conditions and soil water contents during 1986-2016 between the permafrost and permafrost-free sites on the Qinghai-Tibetan Plateau (QTP). We found that all the sites have been experienced continuous warming during this period. Soil water contents showed significant increasing or decreasing trends at three of the four permafrost-free sites, but there were no significant increasing or decreasing changes at all the four permafrost sites. In addition, the Mann-Kendall (M K) test showed that there were 2 change-points in soil water content for the sites with the active layer thickness was about 2 m, while the sites with active layer thickness larger than 3 m and permafrost-free sites showed 3-5 change-points, indicating that the soil water contents in areas with shallower active layer showed smaller changes. The different changing trends and change-points between permafrost and permafrost-free sites were associated with the existence of permafrost and active layer thickness. Although soil water contents can be affected by many factors, our results suggested that permafrost existence can affect interannual changes in soil water contents, and permafrost degradation including increasing active layer thickness and disappearance of permafrost may decrease ecosystem resilience in the face of climate change.
关键词	MOISTURE PRODUCTS TREND ANALYSIS ACTIVE LAYER CLIMATE VALIDATION MODEL DEGRADATION VARIABILITY STABILITY SATELLITE
英文关键词	Climate change; Precipitation; Remotely sensed soil moisture; Seasonally frozen ground; Trend analysis
语种	英语
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000703268900086
来源期刊	CATENA
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/254735
作者单位	[Liu, Guimin; Wu, Xiaoli] Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730000, Peoples R China; [Liu, Guimin; Zhao, Lin; Wu, Tonghua; Hu, Guojie; Li, Ren; Qiao, Yongping; Wu, Xiaodong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, Lanzhou 730000, Peoples R China; [Zhao, Lin] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China; [Wu, Xiaodong] Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Guimin,Wu, Xiaoli,Zhao, Lin,et al. Soil water content in permafrost regions exhibited smaller interannual changes than non-permafrost regions during 1986-2016 on the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,207.
APA	Liu, Guimin.,Wu, Xiaoli.,Zhao, Lin.,Wu, Tonghua.,Hu, Guojie.,...&Wu, Xiaodong.(2021).Soil water content in permafrost regions exhibited smaller interannual changes than non-permafrost regions during 1986-2016 on the Qinghai-Tibetan Plateau.CATENA,207.
MLA	Liu, Guimin,et al."Soil water content in permafrost regions exhibited smaller interannual changes than non-permafrost regions during 1986-2016 on the Qinghai-Tibetan Plateau".CATENA 207(2021).