气候变化领域集成服务门户(CCPortal): Lag in Hydrologic Recovery Following Extreme Meteorological Drought Events: Implications for Ecological Water Requirements

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DOI	10.3390/w12030837
	Lag in Hydrologic Recovery Following Extreme Meteorological Drought Events: Implications for Ecological Water Requirements
	Liu, Qiang; Ma, Xiaojing; Yan, Sirui; Liang, Liqiao; Pan, Jihua; Zhang, Junlong
通讯作者	Liu, Q (通讯作者)
发表日期	2020
EISSN	2073-4441
卷号	12 期号:3
英文摘要	Hydrological regimes, being strongly impacted by climate change, play a vital role in maintaining the integrity of aquatic river habitats. We investigated lag in hydrologic recovery following extreme meteorological drought events, and we also discussed its implications in the assessment of ecological environment flow. We used monthly anomalies of three specific hydrometeorological variables (precipitation, streamflow, and baseflow) to identify drought, while we used the Chapman-Maxwell method (the CM filter) with recession constant calculated from Automatic Baseflow Identification Technique (ABIT) to separate baseflow. Results showed that: (i) Compared to the default recession parameter (alpha = 0.925), the CM filter with the ABIT estimate (alpha = 0.984) separated baseflow more accurately. (ii) Hydrological drought, resulting from meteorological drought, reflected the duration and intensity of meteorological drought; namely, longer meteorological drought periods resulted in longer hydrological drought periods. Interestingly, the time lag in streamflow and baseflow indicated that aquatic ecosystem habitat recovery also lagged behind meteorological drought. (iii) Assessing environmental flow by quantifying drought provided greater detail on hydrological regimes compared to abrupt changes, such as the increased hydrological periods and the different environment flows obtained. Taken together, our results indicated that the hydrological response in streamflow and baseflow (e.g., the time lag and the precipitation recovery rate (P-r)) played a vital role in the assessment of environmental flow.
关键词	ENVIRONMENTAL FLOWS SEPARATION METHODS CLIMATE-CHANGE RIVER-BASIN BASEFLOW PRECIPITATION SENSITIVITY RECESSION HABITAT TRENDS
英文关键词	baseflow; extreme drought; recession parameter; Taoer River basin
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000529249500222
来源期刊	WATER
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/259897
推荐引用方式 GB/T 7714	Liu, Qiang,Ma, Xiaojing,Yan, Sirui,et al. Lag in Hydrologic Recovery Following Extreme Meteorological Drought Events: Implications for Ecological Water Requirements[J]. 中国科学院青藏高原研究所,2020,12(3).
APA	Liu, Qiang,Ma, Xiaojing,Yan, Sirui,Liang, Liqiao,Pan, Jihua,&Zhang, Junlong.(2020).Lag in Hydrologic Recovery Following Extreme Meteorological Drought Events: Implications for Ecological Water Requirements.WATER,12(3).
MLA	Liu, Qiang,et al."Lag in Hydrologic Recovery Following Extreme Meteorological Drought Events: Implications for Ecological Water Requirements".WATER 12.3(2020).