干旱区生态环境知识资源中心(Arid): Hydrological Drought Risk Assessment Using a Multidimensional Copula Function Approach in Arid Inland Basins, China

Arid

DOI	10.3390/w12071888
	Hydrological Drought Risk Assessment Using a Multidimensional Copula Function Approach in Arid Inland Basins, China
	Xiang, Yanyun; Wang, Yi; Chen, Yaning; Bai, Yifei; Zhang, Leyuan; Zhang, Qifei
通讯作者	Wang, Y
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:7
英文摘要	The aim of this research was to use the standardized runoff index (SRI) with a three-month timescale (SRI-3) to analyze hydrological drought risk in two arid river basins characterized by different runoff regimes, Northwest China. Based on SRI-3, hydrological drought levels for different events were defined through run theory. The hydrological drought risk in the two study basins was then comprehensively assessed using a multidimensional copula function that considered the multivariable joint probability of hydrological drought duration, severity, intensity and peak. Results indicate that: (1) the risk of hydrological drought in the two basins between 1961-2018 periodically changed. There was a slight increase in risk within the Yarkant River Basin, while there was a clear decrease in risk within the Kaidu River Basin. The magnitude of drought in the two basins was relatively low; both basins were dominated by mild to moderate hydrological droughts; (2) the drought probabilities of the Yarkant River Basin and Kaidu River Basin from 1961 to 2018 exhibited a falling-rising-falling pattern and a rising-falling trend through time, respectively. These trends were correlated with changes in precipitation and the area of glacial ice, which presumably influenced the amount and source of runoff in the two basins. Hydrological drought risk in the Yarkant River Basin was higher than in the Kaidu River Basin; and (3) the return period of mild, moderate, severe and extreme drought events was 2 yrs, 8 yrs, 20 yrs, and 60 yrs in the Yarkant River Basin, respectively, and 2 yrs, 8 yrs, 23 yrs and 74 yrs in the Kaidu River Basin, respectively.
英文关键词	hydrological drought risk coupla functions standardized runoff index run theory
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	SCI-E
WOS记录号	WOS:000557197400001
WOS关键词	RIVER-BASIN ; INDEX
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325494
作者单位	[Xiang, Yanyun; Wang, Yi; Chen, Yaning; Bai, Yifei; Zhang, Leyuan; Zhang, Qifei] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Xiang, Yanyun; Bai, Yifei; Zhang, Leyuan; Zhang, Qifei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Yanyun,Wang, Yi,Chen, Yaning,et al. Hydrological Drought Risk Assessment Using a Multidimensional Copula Function Approach in Arid Inland Basins, China[J]. 中国科学院新疆生态与地理研究所,2020,12(7).
APA	Xiang, Yanyun,Wang, Yi,Chen, Yaning,Bai, Yifei,Zhang, Leyuan,&Zhang, Qifei.(2020).Hydrological Drought Risk Assessment Using a Multidimensional Copula Function Approach in Arid Inland Basins, China.WATER,12(7).
MLA	Xiang, Yanyun,et al."Hydrological Drought Risk Assessment Using a Multidimensional Copula Function Approach in Arid Inland Basins, China".WATER 12.7(2020).