干旱区生态环境知识资源中心(Arid): Connecting flow duration curve and precipitation duration curve based on the relationship deduced from machine learning in the watersheds of northern China

Arid

DOI	10.1016/j.jhydrol.2024.131235
	Connecting flow duration curve and precipitation duration curve based on the relationship deduced from machine learning in the watersheds of northern China
	Ma, Lan; Liu, Dengfeng; Luan, Jinkai; Ming, Guanghui; Meng, Xianmeng; Huang, Qiang
通讯作者	Liu, DF
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2024
卷号	635
英文摘要	Obtaining reliable hydrological data for ungauged watersheds has always been a significant challenge in the water resources management. The flow duration curve (FDC) and precipitation duration curve (PDC) are classical methods to address this challenge. However, traditional FDC and PDC methods mostly rely on pre-assumed probability distribution function form, which may result in sub-optimal model parameters and consequently suboptimal simulation results of hydrological data, and the common function forms are not applicable to deal with the data including zero-values, which often occurs in the discharge data of arid region and daily rainfall data. To address the issues in FDC and PDC , this study firstly determines the most suitable function form to describe FDC and PDC from various distribution functions, i.e., Log Normal, Generalized Pareto Distribution and H2018 function, from 1960 to 2010 in 7 watersheds in the north of China. The multiple methods including Random Forest, polynomial, Multilayer Perceptron and K-Nearest Neighbor are employed to simulate the parameters of the functions, aiming to deduce the optimal parameters of FDC functions. The results show that, H2018 function form has the best performance in simulating the PDC and FDC and in general, parameter a and b of H2018 function indicate an opposite trend, and parameter k declines in mostly condition at the annual scale from 1960 to 2010. The results of different methods indicate that the Random Forest method is the most efficient and accurate approach to deduce FDC parameters from measured precipitation and climate factors, compared with polynomial, Multilayer Perceptron and K-Nearest Neighbor. Based on the relationship between PDC parameters and FDC parameters, the FDC of ungauged basins can be deduced from the observed precipitation data. The research findings provide a new method to estimate FDC for the water resources management in the ungauged basins.
英文关键词	Runoff Precipitation Flow duration curve Precipitation duration curve
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001235703100001
WOS关键词	PREDICTION ; STREAMFLOW
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404582
推荐引用方式 GB/T 7714	Ma, Lan,Liu, Dengfeng,Luan, Jinkai,et al. Connecting flow duration curve and precipitation duration curve based on the relationship deduced from machine learning in the watersheds of northern China[J],2024,635.
APA	Ma, Lan,Liu, Dengfeng,Luan, Jinkai,Ming, Guanghui,Meng, Xianmeng,&Huang, Qiang.(2024).Connecting flow duration curve and precipitation duration curve based on the relationship deduced from machine learning in the watersheds of northern China.JOURNAL OF HYDROLOGY,635.
MLA	Ma, Lan,et al."Connecting flow duration curve and precipitation duration curve based on the relationship deduced from machine learning in the watersheds of northern China".JOURNAL OF HYDROLOGY 635(2024).