气候变化领域集成服务门户(CCPortal): The Spatial and Temporal Contribution of Glacier Runoff to Watershed Discharge in the Yarkant River Basin, Northwest China

CCPortal

DOI	10.3390/w9030159
	The Spatial and Temporal Contribution of Glacier Runoff to Watershed Discharge in the Yarkant River Basin, Northwest China
	Yin, Zhenliang; Feng, Qi; Liu, Shiyin; Zou, Songbing; Li, Jing; Yang, Linshan; Deo, Ravinesh C.
发表日期	2017
ISSN	2073-4441
卷号	9 期号:3
英文摘要	In this paper, a glacial module based on an enhanced temperature-index approach was successfully introduced into the Soil and Water Assessment Tool (SWAT) model to simulate the glacier runoff and water balance of a glacierized watershed, the mountainous region of the Yarkant River Basin (YRB) in Karakoram. Calibration and validation of the SWAT model were based on comparisons between the simulated and observed discharge with a monthly temporal resolution from 1961 to 2011 for the Kaqun hydrological station. The results reaffirmed the viability of the approach for simulating glacier runoff, as evidenced by a Nash-Sutcliff Efficiency (NSE) of 0.82-0.86 as well as a percentage bias (PBIAS) of -4.5% to 2.4%, for the calibration and validation periods, respectively. Over the last 50 years, the total discharge and glacier runoff both exhibited increasing trends with 0.031 x 10(9) m(3)a(-1) and 0.011 x 10(9) m(3)a(-1). The annual glacier runoff contribution to the streamflow was between 42.3% and 64.5%, with an average of 51.6%, although the glaciers accounted for only 12.6% of the watershed drainage area in the mountainous YRB. The monthly contribution of the glacier runoff ranged from 11.0% in April to 62.1% in August, and the glacier runoff from June to September accounted for about 86.3% of the annual glacier runoff. Runoff from the mountainous regions above 5000 m a.s.l. accounted for 70.5% of the total discharge, with glacier runoff contributions being approximately 46.4%.
关键词	glacier runoff contribution distributed hydrological modeling Yarkant River Basin soil and water assessment tool (SWAT)Karakoram
学科领域	Water Resources
语种	英语
WOS研究方向	Water Resources
来源期刊	WATER
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/111932
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yin, Zhenliang,Feng, Qi,Liu, Shiyin,et al. The Spatial and Temporal Contribution of Glacier Runoff to Watershed Discharge in the Yarkant River Basin, Northwest China[J]. 中国科学院西北生态环境资源研究院,2017,9(3).
APA	Yin, Zhenliang.,Feng, Qi.,Liu, Shiyin.,Zou, Songbing.,Li, Jing.,...&Deo, Ravinesh C..(2017).The Spatial and Temporal Contribution of Glacier Runoff to Watershed Discharge in the Yarkant River Basin, Northwest China.WATER,9(3).
MLA	Yin, Zhenliang,et al."The Spatial and Temporal Contribution of Glacier Runoff to Watershed Discharge in the Yarkant River Basin, Northwest China".WATER 9.3(2017).