The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau

doi:10.1002/hyp.13677

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau
	Huang Kewei 2,3; Dai Junchen 2,3; Wang Genxu 3; Chang Juan 1; Lu Yaqiong 3; Song Chunlin 2,3; Hu Zhaoyong 3; Ahmed Naveed 3; Ye Renzheng 1
刊名	Hydrological Processes
	2019
卷号	34 期号:6 页码:1475-1488
关键词	Atmospheric temperature Climate change Climate models Discharge (fluid mechanics) Dynamics Groundwater Permafrost Surface measurement Surface properties Topography Watersheds
ISSN号	0885-6087
DOI	10.1002/hyp.13677
产权排序	1
文献子类	Article; Early Access
英文摘要	To investigate the influences of land surface temperatures (LSTs) on suprapermafrost groundwater discharge, a river valley was selected in a typical permafrost region of Fenghuoshan (FHS) watershed on the central Qinghai-Tibet Plateau. We developed a two-dimensional model to simulate the suprapermafrost groundwater seasonal dynamics controlled by LSTs and the changing trends under a warming climate scenario (3°C/100 year). We calibrated key parameters of our model by the field observations at FHS watershed and analysed the relationship between the different LSTs and the suprapermafrost groundwater discharge dynamics in the active layer. The results show that (a) by changing the permeability of the active layer, the LSTs have a significant effect on the suprapermafrost groundwater discharge. A higher LST causes more suprapermafrost groundwater discharge, resulting in a different discharge pattern and affecting the ability to replenish the nearby river in the permafrost area. (b) Under a warming climate, the most obvious change in the suprapermafrost groundwater occurs in the freeze initiation period (from October to December), and there is a significant increase in the suprapermafrost groundwater discharge rate. This study reveals that the LST has a controlling effect on the seasonal dynamics of shallow groundwater systems in permafrost regions, indicating that the impact of local topography on the suprapermafrost groundwater should not be ignored in suprapermafrost groundwater simulations. Moreover, the warming simulation results demonstrate that the freezing season is the significant transformation period of suprapermafrost groundwater dynamics under future climate change, which can be used to better understand hydrological and ecological process changes in permafrost regions under climate warming. © 2019 John Wiley & Sons Ltd
电子版国际标准刊号	1099-1085
资助项目	National Natural Science Foundation of China[91547203] ; National Natural Science Foundation of China[41671015]
WOS关键词	PERMAFROST THAW ; ALPINE MEADOW ; FLOW ; HYDROLOGY ; RUNOFF ; SOIL ; DYNAMICS ; CLIMATE ; BASIN ; SIMULATION
WOS研究方向	Water Resources
语种	英语
出版者	WILEY
WOS记录号	WOS:000504201400001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/33558]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Wang Genxu
作者单位	1.College of Earth and Environment Science, Lanzhou University, Lanzhou, China 2.University of Chinese Academy of Sciences, Beijing, China; 3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China;
推荐引用方式 GB/T 7714	Huang Kewei,Dai Junchen,Wang Genxu,et al. The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau[J]. Hydrological Processes,2019,34(6):1475-1488.
APA	Huang Kewei.,Dai Junchen.,Wang Genxu.,Chang Juan.,Lu Yaqiong.,...&Ye Renzheng.(2019).The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau.Hydrological Processes,34(6),1475-1488.
MLA	Huang Kewei,et al."The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau".Hydrological Processes 34.6(2019):1475-1488.