气候变化领域集成服务门户(CCPortal): Increasing annual streamflow and groundwater storage in response to climate warming in the Yangtze River source region

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DOI	10.1088/1748-9326/ac0f27
	Increasing annual streamflow and groundwater storage in response to climate warming in the Yangtze River source region
	Yi, Wenxuan; Feng, Yuqing; Liang, Sihai; Kuang, Xingxing; Yan, Dezhao; Wan, Li
通讯作者	Liang, SH (通讯作者)
发表日期	2021
ISSN	1748-9326
卷号	16 期号:8
英文摘要	Climate warming has been driving hydrological changes across the globe, especially in high latitude and altitude regions. Long-term (1962-2012) streamflow records and permafrost data in the Yangtze River source region were selected to analyze streamflow variations and groundwater storage in response to climate warming. Results of Mann-Kendall test and Morlet wavelet analysis show that the anomalies of both annual streamflow and winter baseflow are near the year 2010, and their main period scales are 37 years and 34 years, respectively. The annual streamflow and the annual baseflow increased significantly, as assessed by the recursive digital filtering baseflow separation. Results of Pearson correlation coefficient indicate that the rising air temperature is the primary cause for the increased streamflow instead of precipitation and evaporation. By using the top temperature of permafrost model, the total permafrost area has decreased by 8200 km(2) during the past 50 years, which causes groundwater storage to increase by about 1.62 km(3) per year due to climate warming. More space has been made available to store the increasing meltwater during the permafrost thawing. Permafrost thawing and increasing temperature are the direct and indirect causes of the increasing groundwater storage. The results of the cumulative anomaly method and Pearson correlation coefficients show that permafrost thawing has a greater impact than increasing temperature on the increase of groundwater storage. Permafrost thawing due to climate warming show compound effects on groundwater storage-discharge mechanism, and significantly affects the mechanisms of streamflow generation and variation.
关键词	TIBETAN PLATEAU PERMAFROST DEGRADATION WAVELET ANALYSIS FLOW CHINA BASIN IDENTIFICATION VARIABILITY ATTRIBUTION VEGETATION
英文关键词	climate warming; streamflow variations; permafrost thawing; groundwater storage; Yangtze River source region
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000675618000001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
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/260240
推荐引用方式 GB/T 7714	Yi, Wenxuan,Feng, Yuqing,Liang, Sihai,et al. Increasing annual streamflow and groundwater storage in response to climate warming in the Yangtze River source region[J]. 中国科学院青藏高原研究所,2021,16(8).
APA	Yi, Wenxuan,Feng, Yuqing,Liang, Sihai,Kuang, Xingxing,Yan, Dezhao,&Wan, Li.(2021).Increasing annual streamflow and groundwater storage in response to climate warming in the Yangtze River source region.ENVIRONMENTAL RESEARCH LETTERS,16(8).
MLA	Yi, Wenxuan,et al."Increasing annual streamflow and groundwater storage in response to climate warming in the Yangtze River source region".ENVIRONMENTAL RESEARCH LETTERS 16.8(2021).