干旱区生态环境知识资源中心(Arid): Detection and attribution of trends in flood frequency under climate change in the Qilian Mountains, Northwest China

Arid

DOI	10.1016/j.ejrh.2022.101153
	Detection and attribution of trends in flood frequency under climate change in the Qilian Mountains, Northwest China
	Wang, Xueliang; Chen, Rensheng; Li, Hongyuan; Li, Kailu; Liu, Junfeng; Liu, Guohua
通讯作者	Chen, RS
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2022
卷号	42
英文摘要	Study region: The Qilian Mountains, Northwest China Study focus: Trends in flood frequency and their driving factors must be analyzed to enable the effective management of water resources in the inland rivers originating in the Qilian mountains (QMs). Based on hydrological station datasets from 12 typical rivers with annual maximum peak discharge and peaks-over-threshold (POT) flood series for the period 1970-2019, the spatial and temporal variations of flooding in 12 rivers were detected using a linear regression estimator and Mann-Kendall trend tests. New hydrological insights: The results indicate that the frequency of POT floods in 12 rivers during 1970-2019 showed an increasing trend at the 90% significance level, with an increasing trend for small floods and decreasing trends for medium and large floods. Flood levels varied from east to west across the region, with an overall decreasing trend in the east, an increase in small floods in the central rivers, and significant increases in both small and medium floods in the west. Both temperature and precipitation increased after 1987, and summer precipitation was a significantly increased; as a result, POT floods in most rivers increased after the 1980 s, and trends in flood frequency showed decreases in spring and autumn and an increase in summer. The main causes of the changes in flood frequency were found to be heavy rainfall, abnormal warming, and accelerated glacial melting.
英文关键词	Trends Flood frequency Peaks-over-threshold Climate change Qilian mountains
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000822688400004
WOS关键词	RIVER-BASIN ; MANN-KENDALL ; URBAN FLOOD ; ARID REGION ; RISK ; GLACIER ; VARIABILITY ; IMPACTS ; SHRINKAGE ; EXTREMES
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393528
推荐引用方式 GB/T 7714	Wang, Xueliang,Chen, Rensheng,Li, Hongyuan,et al. Detection and attribution of trends in flood frequency under climate change in the Qilian Mountains, Northwest China[J],2022,42.
APA	Wang, Xueliang,Chen, Rensheng,Li, Hongyuan,Li, Kailu,Liu, Junfeng,&Liu, Guohua.(2022).Detection and attribution of trends in flood frequency under climate change in the Qilian Mountains, Northwest China.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,42.
MLA	Wang, Xueliang,et al."Detection and attribution of trends in flood frequency under climate change in the Qilian Mountains, Northwest China".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 42(2022).