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	Identification of the Factors Influencing the Baseflow in the Permafrost Region of the Northeastern Qinghai-Tibet Plateau
	Qin, Jia1,2; Ding, Yongjian2,3; Han, Tianding3; Liu, Yuexia4
刊名	WATER
	2017-09-01
卷号	9期号:9页码:16
关键词	baseflow change precipitation land use active layer VIC model permafrost regions
ISSN号	2073-4441
DOI	10.3390/w9090666
通讯作者	Qin, Jia(qinjia418@lzb.ac.cn) ; Han, Tianding(tdhan@lzb.ac.cn)
英文摘要	Baseflow is an essential component of river runoff. Accurate measurements and analyses of baseflow change are challenging in permafrost-covered regions. In this paper, the upper reaches of the Shule River were selected as the study area, in which to study the baseflow change regulation and causes. The variable infiltration capacity (VIC) model, based on the ARNO baseflow formulation, was used to simulate the baseflow. Simulated baseflow was validated by the isotopic baseflow separation results and measured runoff in the recession periods throughout an entire year. It was found that approximately 63.1% of the river runoff was sourced by baseflow in the study region; the baseflow change was relatively smooth throughout the year, and it lagged a few days behind the river runoff. Approximately 80% of the total baseflow was generated in the 3500-4500 m alpine regions, with mainly low-temperature and mid-temperature permafrost. Based on the climate, runoff, land use, soil temperature and moisture data of the permafrost active layer, the mechanism of baseflow change in the permafrost zone was analysed. Precipitation and temperature positively enhanced the baseflow in the permafrost region throughout a year, but the baseflow was more influenced by the temperature than precipitation. In the study area, the cold desert and alpine grassland had the largest regulation capacity for baseflow. Affected by the permafrost freeze-thaw process, a baseflow peak occurred in the spring and the baseflow recession slowed in the autumn. This lead to a more uniform distribution of baseflow and runoff throughout the year.
收录类别	SCI
WOS关键词	CLIMATE-CHANGE ; RECESSION ANALYSIS ; EUROPEAN ALPS ; RIVER-BASIN ; STREAMFLOW ; SIMULATIONS ; HYDROLOGY ; CATCHMENT ; BALANCE ; RUNOFF
WOS研究方向	Water Resources
WOS类目	Water Resources
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000411567200039
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557691
专题	寒区旱区环境与工程研究所
通讯作者	Qin, Jia; Han, Tianding
作者单位	1.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, CAREERI, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China 4.Dongzhan Primary Sch, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Qin, Jia,Ding, Yongjian,Han, Tianding,et al. Identification of the Factors Influencing the Baseflow in the Permafrost Region of the Northeastern Qinghai-Tibet Plateau[J]. WATER,2017,9(9):16.
APA	Qin, Jia,Ding, Yongjian,Han, Tianding,&Liu, Yuexia.(2017).Identification of the Factors Influencing the Baseflow in the Permafrost Region of the Northeastern Qinghai-Tibet Plateau.WATER,9(9),16.
MLA	Qin, Jia,et al."Identification of the Factors Influencing the Baseflow in the Permafrost Region of the Northeastern Qinghai-Tibet Plateau".WATER 9.9(2017):16.

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