干旱区生态环境知识资源中心(Arid): Isotopic variations in surface waters and groundwaters of an extremely arid basin and their responses to climate change

Arid

DOI	10.5194/hess-27-4019-2023
	Isotopic variations in surface waters and groundwaters of an extremely arid basin and their responses to climate change
	Zhang, Yu; Tan, Hongbing; Cong, Peixin; Shi, Dongping; Rao, Wenbo; Zhang, Xiying
通讯作者	Tan, HB
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
ISSN	1027-5606
EISSN	1607-7938
出版年	2023
卷号	27 期号:21 页码:4019-4038
英文摘要	Climate change accelerates the global water cycle. However, the relationships between climate change and hydrological processes in the alpine arid regions remain elusive. We sampled surface water and groundwater at high spatial and temporal resolutions to investigate these relationships in the Qaidam Basin, an extremely arid area in the northeastern Tibetan Plateau. Stable H-O isotopes and radioactive 3 H isotopes were combined with atmospheric simulations to examine hydrological processes and their response mechanisms to climate change. Contemporary climate processes and change dominate the spatial and temporal variations of surface water isotopes, specifically the westerlies moisture transport and the local temperature and precipitation regimes. The H-O isotopic compositions in the eastern Kunlun Mountains showed a gradually depleted eastward pattern, while a reverse pattern occurred in the Qilian Mountains water system. Precipitation contributed significantly more to river discharge in the eastern basin (approximately 45 %) than in the middle and western basins (10 %-15 %). Moreover, increasing precipitation and a shrinking cryosphere caused by current climate change have accelerated basin groundwater circulation. In the eastern and southwestern Qaidam Basin, precipitation and meltwater infiltrate along preferential flow paths, such as faults, volcanic channels, and fissures, permitting rapid seasonal groundwater recharge and enhanced terrestrial water storage. However, compensating for water loss due to long-term ice and snow melt will be a challenge under projected increasing precipitation in the southwestern Qaidam Basin, and the total water storage may show a trend of increasing before decreasing. Great uncertainty about water is a potential climate change risk facing the arid Qaidam Basin.
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001169078700001
WOS关键词	NORTHEASTERN TIBETAN PLATEAU ; QAIDAM BASIN ; SALT LAKE ; PRECIPITATION ; MOISTURE ; CYCLE ; RECHARGE ; RIVER ; INTENSIFICATION ; CATCHMENT
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396892
推荐引用方式 GB/T 7714	Zhang, Yu,Tan, Hongbing,Cong, Peixin,et al. Isotopic variations in surface waters and groundwaters of an extremely arid basin and their responses to climate change[J],2023,27(21):4019-4038.
APA	Zhang, Yu,Tan, Hongbing,Cong, Peixin,Shi, Dongping,Rao, Wenbo,&Zhang, Xiying.(2023).Isotopic variations in surface waters and groundwaters of an extremely arid basin and their responses to climate change.HYDROLOGY AND EARTH SYSTEM SCIENCES,27(21),4019-4038.
MLA	Zhang, Yu,et al."Isotopic variations in surface waters and groundwaters of an extremely arid basin and their responses to climate change".HYDROLOGY AND EARTH SYSTEM SCIENCES 27.21(2023):4019-4038.