气候变化领域集成服务门户(CCPortal): Streamflow generation in semi-arid, glacier-covered, montane catchments in the upper Shule River, Qilian Mountains, northeastern Tibetan plateau

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DOI	10.1002/hyp.14276
	Streamflow generation in semi-arid, glacier-covered, montane catchments in the upper Shule River, Qilian Mountains, northeastern Tibetan plateau
	Zhou, Jiaxin; Ding, Yongjian; Wu, Jinkui; Liu, Fengjing; Wang, Shaoping
通讯作者	Ding, YJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0885-6087
EISSN	1099-1085
卷号	35 期号:8
英文摘要	Streamflow generation was investigated using isotopic and geochemical tracers in semiarid, glacier-covered, montane catchments in the upper Shule River, northeastern Tibetan Plateau. Samples from stream water, precipitation, glacier meltwater, and groundwater were collected at the Suli and Gahe catchments along the Shule River, with an area of 1908 and 4210 km(2), respectively. The samples were analysed for stable isotopes of water and major ions. Results of diagnostic tools of mixing models showed that Ca2+, Mg2+ and Cl-, along with delta O-18 and delta H-2, behaved conservatively as a result of mixing of three endmembers. The three endmembers identified by the mixing analysis were surface runoff directly from precipitation, groundwater, and glacier meltwater. Streamflow was dominated by groundwater, accounting for 59% and 60% of streamflow on average in the Suli and Gahe catchments, respectively, with minimum groundwater contribution in July (47% and 50%) and maximum contribution in October (69% and 70%). The contributions of surface runoff were slightly higher in the Suli catchment (25%) than in the Gahe catchment (19%). However, the contributions of glacier meltwater were higher in the Gahe catchment (21%) compared to the Suli catchment (17%), as a result of a higher percentage of glacier covered area in the Gahe catchment. This difference followed well the non-linear power-law trend of many glacier-covered catchments around the world. As glacier retreat continues in the future, the reduction of streamflow in glacier-covered upper Shule catchment likely will be accelerated and possibly elsewhere in the Tibetan Plateau. This study suggests that it is critical to define the turning point of an accelerated reduction in glacier meltwater for glacier-covered catchments around the world in order to better assess and manage water resources.
关键词	HYDROGRAPH SEPARATION CORDILLERA BLANCA STABLE-ISOTOPES WATER ISOTOPES INVENTORY DATA SIERRA-NEVADA BASIN RUNOFF MELTWATER PATHWAYS
英文关键词	diagnostic tools of mixing models; endmember mixing analysis; stable isotopes; streamflow generation
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000691011400030
来源期刊	HYDROLOGICAL PROCESSES
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/253843
作者单位	[Zhou, Jiaxin] Lanzhou City Univ, Coll Geog & Environm Engn, Lanzhou, Peoples R China; [Ding, Yongjian; Wu, Jinkui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China; [Ding, Yongjian; Wang, Shaoping] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China; [Liu, Fengjing] Michigan Technol Univ, Coll Forest Resources & Environm Sci, Houghton, MI 49931 USA
推荐引用方式 GB/T 7714	Zhou, Jiaxin,Ding, Yongjian,Wu, Jinkui,et al. Streamflow generation in semi-arid, glacier-covered, montane catchments in the upper Shule River, Qilian Mountains, northeastern Tibetan plateau[J]. 中国科学院西北生态环境资源研究院,2021,35(8).
APA	Zhou, Jiaxin,Ding, Yongjian,Wu, Jinkui,Liu, Fengjing,&Wang, Shaoping.(2021).Streamflow generation in semi-arid, glacier-covered, montane catchments in the upper Shule River, Qilian Mountains, northeastern Tibetan plateau.HYDROLOGICAL PROCESSES,35(8).
MLA	Zhou, Jiaxin,et al."Streamflow generation in semi-arid, glacier-covered, montane catchments in the upper Shule River, Qilian Mountains, northeastern Tibetan plateau".HYDROLOGICAL PROCESSES 35.8(2021).