干旱区生态环境知识资源中心(Arid): Systematic assessment of the development and recovery characteristics of hydrological drought in a semi-arid area

Arid

DOI	10.1016/j.scitotenv.2022.155472
	Systematic assessment of the development and recovery characteristics of hydrological drought in a semi-arid area
	Xu, Yang; Zhang, Xuan; Hao, Zengchao; Hao, Fanghua; Li, Chong
通讯作者	Zhang, X
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	836
英文摘要	Studies have documented the significant effect of various factors on hydrological drought events. However, fewstudies have quantified drought's development and recovery process under environmental changes. This study focused on identifying hydrological drought's development and recovery characteristics and their potential causes in a typical semi-arid area. The Standardized Streamflow Index (SSI) was used as a metric for hydrological droughts, while the run theory was applied to identify the development and recovery processes of droughts. Changes in observed (human disturbed scenario) and simulated (natural scenario) droughts by employing the SWAT (Soil and Water Assessment Tool) model were also investigated from 1970 to 2016. The simulated-observed approach was used to assess the impacts of human regulations on hydrological drought development and recovery characteristics. Results showed that hydrological droughts occurred mainly during 1980-1990 and 2000-2016. In the natural condition, drought duration and intensity were higher, while lower severity in the drought recovery stage than development stage was observed. The drainage characteristics of the basin played the most critical role in the development and recovery characteristics of drought, which were also influenced by climatic conditions. Human activities had exacerbated recent natural hydrological drought. When considering the contribution of human activities, the reservoir operation was the dominant anthropic factor affected the development and recovery process of drought in the study area. Under the effects of reservoir regulation, long-duration hydrological droughts became rare. Moreover, the recovery ability of drought had been weakened. The effects of the reservoir were progressively crucial gradually. Although the water got from the river by the reservoir had been reduced, the negative impact on aggravating drought remains stronger than the reservoir was initially constructed. The results of our study will help improve the optimal management of reservoirs in semi-arid areas and enhance drought early warning and forecasting system.
英文关键词	Hydrological drought Development and recovery Human activities Reservoir regulation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000969649200004
WOS关键词	SOCIOECONOMIC DROUGHT ; CLIMATE-CHANGE ; RISK ANALYSIS ; RIVER-BASIN ; RESERVOIR OPERATIONS ; WATER SCARCITY ; IMPACTS ; PROPAGATION ; MANAGEMENT ; CATCHMENTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394382
推荐引用方式 GB/T 7714	Xu, Yang,Zhang, Xuan,Hao, Zengchao,et al. Systematic assessment of the development and recovery characteristics of hydrological drought in a semi-arid area[J],2022,836.
APA	Xu, Yang,Zhang, Xuan,Hao, Zengchao,Hao, Fanghua,&Li, Chong.(2022).Systematic assessment of the development and recovery characteristics of hydrological drought in a semi-arid area.SCIENCE OF THE TOTAL ENVIRONMENT,836.
MLA	Xu, Yang,et al."Systematic assessment of the development and recovery characteristics of hydrological drought in a semi-arid area".SCIENCE OF THE TOTAL ENVIRONMENT 836(2022).