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The impacts of soil freeze/thaw dynamics on soil water transfer and spring phenology in the Tibetan Plateau
Huiru Jiang; Wenjiang Zhang; Yonghong Yi; Kun Yang; Gengxu Wang
Corresponding AuthorWenjiang Zhang
2018
Source PublicationARCTIC ANTARCTIC AND ALPINE RESEARCH
ISSN1523-0430
EISSN1938-4246
Volume50Issue:1Pages:UNSP e1439155
SubtypeArticle
Contribution Rank5
AbstractClimate warming has induced significant changes in permafrost and seasonally frozen ground (SFG) in the Tibetan Plateau, which have complex influences on local environments. A better understanding of the impacts of soil freeze/thaw (F/T) dynamics on soil water transfer and vegetation growth is important to explore related eco-hydrological influences. We investigated soil F/T dynamics and their impacts with in-situ and satellite-based observations. Our results showed the contrasting F/T dynamics between SFG and permafrost areas. In permafrost areas, soil froze downward from the ground surface and upward from the active layer bottom with a distinct freezing zero-curtain, and minimum soil moisture occurred in the intermediate layer, but the thawing process was unidirectional. However, the vertical F/T directions were contrary in SFG areas, where soil moisture generally increased with depth and the thawing zero-curtain was distinct. The spring onset showed a positive correlation with thaw onset in permafrost areas, but such a correlation was variable in SFG areas likely depending on soil-moisture level. Our results implied that the different soil-moisture patterns and the varying vegetation response might be related to the spatially contrasting UT dynamics, which may have different impacts on soil water transfer, and further affect the zero-curtain and vegetation phenology.
KeywordFreeze/thaw  permafrost  soil moisture  Tibetan Plateau  vegetation spring onset
DOI10.1080/15230430.2018.1439155
Indexed BySCI
Language英语
WOS IDWOS:000438736900001
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23474
Collection山地表生过程与生态调控重点实验室
Recommended Citation
GB/T 7714
Huiru Jiang,Wenjiang Zhang,Yonghong Yi,et al. The impacts of soil freeze/thaw dynamics on soil water transfer and spring phenology in the Tibetan Plateau[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2018,50(1):UNSP e1439155.
APA Huiru Jiang,Wenjiang Zhang,Yonghong Yi,Kun Yang,&Gengxu Wang.(2018).The impacts of soil freeze/thaw dynamics on soil water transfer and spring phenology in the Tibetan Plateau.ARCTIC ANTARCTIC AND ALPINE RESEARCH,50(1),UNSP e1439155.
MLA Huiru Jiang,et al."The impacts of soil freeze/thaw dynamics on soil water transfer and spring phenology in the Tibetan Plateau".ARCTIC ANTARCTIC AND ALPINE RESEARCH 50.1(2018):UNSP e1439155.
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