Synergistic effects of multiple driving factors on the runoff variations in the Yellow River Basin,China

作     者：WANG Junjie SHI Bing ZHAO Enjin CHEN Xuguang YANG Shaopeng WANG Junjie;SHI Bing;ZHAO Enjin;CHEN Xuguang;YANG Shaopeng

作者机构：College of EngineeringOcean University of ChinaQingdao 266100China Hubei Key Laboratory of Marine Geological ResourcesChina University of GeosciencesWuhan 430074China College of Ocean Science and EngineeringShandong University of Science and TechnologyQingdao 266590China 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2021年第13卷第8期

页      面：835-857页

核心收录：

学科分类：08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 

基　　金：This research was financially supported by the National Natural Science Foundation of China-Shandong Joint Fund(U2006227,U1906234) the National Natural Science Foundation of China(51279189) 

主　　题：synergistic effects precipitation runoff variations atmospheric circulations multiple wavelet coherence Yellow River Basin 

摘      要：River runoff plays an important role in watershed ecosystems and human survival,and it is controlled by multiple environmental ***,the synergistic effects of various large-scale circulation factors and meteorological factors on the runoff on different time-frequency scales have rarely been *** light of this,the underlying mechanism of the synergistic effects of the different environmental factors on the runoff variations was investigated in the Yellow River Basin of China during the period 1950-2019 using the bivariate wavelet coherence(WTC)and multiple wavelet coherence(MWC)***,the continuous wavelet transform(CWT)method was used to analyze the multiscale characteristics of the *** results of the CWT indicate that the runoff exhibited significant continuous or discontinuous annual and semiannual oscillations during the study *** inter-annual time scales were also observed for the runoff in the Yellow River *** meteorological factors better explained the runoff variations on seasonal and annual time *** average wavelet coherence(AWC)and the percent area of the significant coherence(PASC)between the runoff and individual meteorological factors were 0.454 and 19.89%,*** circulation factors mainly regulated the runoff on the inter-annual and decadal time scales with more complicated phase relationships due to their indirect effects on the *** AWC and PASC between the runoff and individual circulation factors were 0.359 and 7.31%,*** MWC analysis revealed that the synergistic effects of multiple factors should be taken into consideration to explain the multiscale characteristic variations of the *** AWC or MWC ranges were 0.320-0.560,0.617-0.755,and 0.819-0.884 for the combinations of one,two,and three circulation and meteorological factors,*** PASC ranges were 3.53%-33.77%,12.93%-36.90%,and 20.67%-39.34%for the combinations one,two,and three driving facto