气候变化领域集成服务门户(CCPortal): Baseflow Separation and Its Response to Meteorological Drought in a Temperate Water-limited Basin, North China

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DOI	10.1007/s11769-021-1231-7
	Baseflow Separation and Its Response to Meteorological Drought in a Temperate Water-limited Basin, North China
	Liu Qiang; Yan Sirui; Li Miao; Ma Xiaojing; Liang Liqiao; Zhang Junlong; Pan Jihua
通讯作者	Li, M (通讯作者)
发表日期	2021
ISSN	1002-0063
EISSN	1993-064X
起始页码	867
结束页码	876
卷号	31 期号:5
英文摘要	Baseflow, a component of the total streamflow, plays a key role in maintaining aquatic habitats, particularly during extreme drought events. This study investigated baseflow response to a prolonged and extreme meteorological drought event in the Baiyangdian Basin (BYD basin), a temperate water-limited basin in North China. Applying a precipitation series, piecewise regression was used to determine this extreme meteorological drought event, while the Automatic Baseflow Identification Technique (ABIT) was used to estimate a recession parameter (alpha), which was used to isolate baseflow from total streamflow. Results showed that: 1) annual precipitation exhibited significant decreasing trends (P < 0.05) with an average change of -1.81 mm/yr(2). The precipitation deficit revealed that the start and end date of the extreme meteorological drought event was from August 1996 to May 2011, respectively, persisting for a total of 178 months (roughly 15 yr); 2) hydrological drought (including streamflow and baseflow) lagged behind meteorological drought while predictably persisting longer than extreme meteorological drought (i.e., precipitation); and 3) baseflow decreased dramatically under meteorological drought at both seasonal and annual scales, resulting in significantly decreasing trends during drought periods. Findings from this study confirmed that hydrological events caused by extreme meteorological drought can alter the magnitude and duration of baseflow and total streamflow, which will have an inevitable influence on aquatic ecosystems.
关键词	HAIHE RIVER-BASIN CLIMATE-CHANGE EXTREME PRECIPITATION FLOW RECESSION HYDROLOGY TRENDS REGIME
英文关键词	baseflow; extreme drought; recession parameter; Baiyangdian Basin
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000700528100007
来源期刊	CHINESE GEOGRAPHICAL SCIENCE
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/260320
推荐引用方式 GB/T 7714	Liu Qiang,Yan Sirui,Li Miao,et al. Baseflow Separation and Its Response to Meteorological Drought in a Temperate Water-limited Basin, North China[J]. 中国科学院青藏高原研究所,2021,31(5).
APA	Liu Qiang.,Yan Sirui.,Li Miao.,Ma Xiaojing.,Liang Liqiao.,...&Pan Jihua.(2021).Baseflow Separation and Its Response to Meteorological Drought in a Temperate Water-limited Basin, North China.CHINESE GEOGRAPHICAL SCIENCE,31(5).
MLA	Liu Qiang,et al."Baseflow Separation and Its Response to Meteorological Drought in a Temperate Water-limited Basin, North China".CHINESE GEOGRAPHICAL SCIENCE 31.5(2021).