气候变化领域集成服务门户(CCPortal): Quantifying the contribution of climate and underlying surface changes to alpine runoff alterations associated with glacier melting

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DOI	10.1002/hyp.14069
	Quantifying the contribution of climate and underlying surface changes to alpine runoff alterations associated with glacier melting
	Xin, Jiali; Sun, Xiaoyu; Liu, Liu; Li, Hao; Liu, Xingcai; Li, Xiuping; Cheng, Lei; Xu, Zongxue
通讯作者	Liu, L (通讯作者)
发表日期	2021
ISSN	0885-6087
EISSN	1099-1085
卷号	35 期号:3
英文摘要	Climate variability and underlying surface changes are strongly associated with runoff alterations. The Yarlung Zangbo River Basin (YZRB) is a typical alpine region located in the southeast Qinghai-Tibet Plateau, where runoff is particularly sensitive and vulnerable to climate and environmental changes. Here, we conducted a quantitative assessment of the contributions of climate variability and underlying surface changes to runoff alterations from 1966 to 2015 in the upper, middle, and lower regions of the YZRB. The year 1997 was identified as the runoff breakpoint in all three sub-regions, which divided the runoff time series into the baseline period (1966-1997) and change period (1998-2015). An adjusted Budyko framework accounting for glacier runoff was developed to conduct a runoff alteration attribution analysis. The results indicated that the increase in runoff in the upper region was dominated by changes in the underlying surface and glacier runoff, whose contribution accounted for 59.61 and 49.18%, respectively. The runoff increase in the middle and lower regions was mainly attributed to the increase in precipitation, accounting for 39.36 and 129.21% of the total runoff alteration, respectively. Moreover, due to the little variation in vegetation and degradation of permafrost in the upper region, increases in runoff might be largely attributed to increases in subsurface runoff caused by the melting of permafrost. In the middle region, in addition to increased precipitation, vegetation degradation had positive effects on runoff increases. The lower region exhibited far higher water consumption rates due to its extensive and dense vegetation coverage accompanied by rising temperature, which resulted in a negative contribution (-58.74%) to runoff alteration. Our findings may therefore have important implications for water resource security and sustainable development in alpine regions.
英文关键词	Budyko; climate change; glacier; permafrost; Qinghai– Tibet Plateau; runoff
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000636346700035
来源期刊	HYDROLOGICAL PROCESSES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260437
推荐引用方式 GB/T 7714	Xin, Jiali,Sun, Xiaoyu,Liu, Liu,et al. Quantifying the contribution of climate and underlying surface changes to alpine runoff alterations associated with glacier melting[J]. 中国科学院青藏高原研究所,2021,35(3).
APA	Xin, Jiali.,Sun, Xiaoyu.,Liu, Liu.,Li, Hao.,Liu, Xingcai.,...&Xu, Zongxue.(2021).Quantifying the contribution of climate and underlying surface changes to alpine runoff alterations associated with glacier melting.HYDROLOGICAL PROCESSES,35(3).
MLA	Xin, Jiali,et al."Quantifying the contribution of climate and underlying surface changes to alpine runoff alterations associated with glacier melting".HYDROLOGICAL PROCESSES 35.3(2021).