干旱区生态环境知识资源中心(Arid): Identification of a Function to Fit the Flow Duration Curve and Parameterization of a Semi-Arid Region in North China

Arid

DOI	10.3390/atmos14010116
	Identification of a Function to Fit the Flow Duration Curve and Parameterization of a Semi-Arid Region in North China
	Ma, Lan; Liu, Dengfeng; Huang, Qiang; Guo, Fengnian; Zheng, Xudong; Zhao, Jing; Luan, Jinkai; Fan, Jingjing; Ming, Guanghui
通讯作者	Liu, DF
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2023
卷号	14 期号:1
英文摘要	The discharge process has undergone major changes in many river basins throughout the world as a result of the simultaneous influences of global climate change and human activity. Flow duration curves (FDCs) are crucial indicators of river basins' hydrological processes. However, it is challenging to compare FDCs in a quantitative way. This study will identify the best function with which to fit the flow duration curve in a semi-arid region of North China, so as to quantify the FDC, and parameterize the function of the FDC of the region in order to describe the FDCs of ungauged basins. In this work, six small- and medium-sized catchments in North China are selected as the study area, and three functions, i.e., log normal, generalized Pareto and H2018 functions, were chosen to fit the FDC at nineteen hydrological stations. The relationship between the parameters of the FDC and the basin characteristics, such as the climatic factors and geographical features, were analyzed. A regression formula of the parameters of the FDC function was established, and its spatial and temporal distributions were examined. Based on the evaluation of four indicators, the Nash-Sutcliffe efficiency, the root mean square relative error, the logarithmic Nash efficiency coefficient and the coefficient of determination, the results demonstrate that the H2018 function can match FDCs the best. Through the annual runoff, annual precipitation, precipitation in summer, potential evapotranspiration, catchment area, mean elevation, length of the main channel and maximum flow frequency, the parameters of a, b, and k in the H2018 function can be formulated. The regression formula constructed in this study can obtain a regional flow duration curve with satisfactory performance, which provides a reference for the validation of remote-sensing-based runoff data in ungauged regions.
英文关键词	flow duration curve parameterization runoff variation
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:000914346200001
WOS关键词	LOESS PLATEAU ; UNGAUGED SITES ; STREAMFLOW ; CALIBRATION ; MODEL ; REGIONALIZATION ; PREDICTION ; CLIMATE ; REGIMES
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395462
推荐引用方式 GB/T 7714	Ma, Lan,Liu, Dengfeng,Huang, Qiang,et al. Identification of a Function to Fit the Flow Duration Curve and Parameterization of a Semi-Arid Region in North China[J],2023,14(1).
APA	Ma, Lan.,Liu, Dengfeng.,Huang, Qiang.,Guo, Fengnian.,Zheng, Xudong.,...&Ming, Guanghui.(2023).Identification of a Function to Fit the Flow Duration Curve and Parameterization of a Semi-Arid Region in North China.ATMOSPHERE,14(1).
MLA	Ma, Lan,et al."Identification of a Function to Fit the Flow Duration Curve and Parameterization of a Semi-Arid Region in North China".ATMOSPHERE 14.1(2023).