[1]卢晓宁,洪佳,王玲玲.近50年来黄河入海水沙的多时间尺度特性分析[J].水土保持研究,2015,22(01):115-122.
　LU Xiaoning,HONG Jia,WANG Lingling.Multiple Time-scale Characteristics Variations of Runoff and Sediment Loading of Yellow River to Sea in Recent 50 Years[J].Research of Soil and Water Conservation,2015,22(01):115-122.
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近50年来黄河入海水沙的多时间尺度特性分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 22 期数: 2015年01期 页码: 115-122 栏目: 出版日期: 2015-02-28
Title:
Multiple Time-scale Characteristics Variations of Runoff and Sediment Loading of Yellow River to Sea in Recent 50 Years
作者:
卢晓宁1,2,3, 洪佳1,2, 王玲玲1,2
1. 成都信息工程学院, 成都 610225;
2. 高原大气与环境四川省重点实验室, 成都 610225;
3. 数字制图与国土信息应用工程国家测绘地理信息局重点实验室(四川基地), 成都 610100
Author(s):
LU Xiaoning1,2,3, HONG Jia1,2, WANG Lingling1,2
1. Chengdu University of Information Technology, Chengdu 610225, China;
2. Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu 610225, China;
3. Key Laboratory of Digital Mapping and Land Information Application of Nationa
关键词:
黄河; 径流; 输沙量; 水沙系数; 多时间尺度; 小波
Keywords:
Yellow River; runoff; sediment load discharge; water sediment coefficient; multiple time Scale; wavelet
分类号:
P332.5
摘要:
基于黄河入海水沙对黄河三角洲及其生态系统平衡的重要性，研究从实时性、全面性地掌握黄河入海水沙序列演变规律的角度出发，以黄河入海口的控制测站—利津站1964年以来的实测径流量、输沙量和水沙系数为研究对象，以Matlab为软件平台，以复值Morlet连续小波变换为研究方法，开展近50 a以来的黄河入海水沙序列的多时间尺度特征分析，并应用小波方差对研究结果进行了检验。研究发现，1964—2012年黄河入海水沙序列都存在明显的多时间尺度特性，且以年均水沙系数的多时间尺度特性最强，其次为年径流，最后是年输沙。黄河入海年均水沙系数以年代际周期振荡为主，且具有全域性，以33 a为尺度中心的是主周期振荡，以18 a为尺度中心的是次周期；黄河入海年径流和年输沙亦以具有全域性的年代际周期振荡最强，前者以大于45 a的年代际周期振荡最强，后者以大于36 a的年代际周期振荡最强；以4 a为尺度中心的年际周期振荡都表现出局域范围内振荡能量最强的特征，但都仅限于1970s前期。在大的丰水期和高含沙量期的主控下，黄河河道以低于次饱和状态的冲刷作用为主，且未来这种趋势将会进一步加强。
Abstract:
The sediment loading and runoff of Yellow River to sea are very important for Yellow River delta and its ecosystem balance. In this view, by using wavelet analysis of complex Morlet Continuous Wavelet Transform on the platform of Matlab, hydrologic series of Lijin station from years of 1964 to 2012, which included annual runoff series, sediment loading series and water sediment coefficient series, were studied to reveal the multiple time-scale characteristics of flow discharges and sediment loadings of Yellow River to sea, all those could make hydrologic series studies of Yellow River more comprehensive and be more real-time. Through this study, it was concluded that there were prominent multiple time-scale characteristics in flow discharges and sediment loads of Yellow River to sea. These features were the most obvious in annual average water sediment coefficient series, and the annual runoff followed, the annual sediment load ranked the last. The inter-decadal variations played the leading role in the whole time domain for the annual mean water sediment coefficient series, with the scale center of 33 years taking as the main period, and the scale center of 18 years as the second period. The annual runoff and annual sediment load of the Yellow River both showed strong inter-decadal periodical oscillation in the whole time domain, with the former showing strongest inter-decadal variations more than 45 years, and the latter more than 36 years. The inter-annual periodical oscillation with a scale center of 4 years, had the highest oscillation energy in local time domains, whereas only limited in early 1970s. Under the control of periods with high water and sediment loading, the Yellow River channel mainly showed scouring prosesses, which was very lower than the secondary saturation state. In the future, this trend of Yellow River would be further significant.

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备注/Memo

收稿日期:2014-02-17;改回日期:2014-04-01。
基金项目:四川省科技计划应用基础研究（2014JY0084）；高原大气与环境四川省重点实验室开放课题（PAEKL-2014-Y1）；数字制图与国土信息应用工程国家测绘地理信息局重点实验室开放基金资助项目“成都城市生态环境评价指标体系与方法研究”（DM2013SC04）；四川省教育厅项目（13ZA0092）；国家自然科学基金（41401103）
作者简介:卢晓宁(1980-),女,博士,副教授,主要从事资源、环境遥感及水文小波分析方面研究。E-mail:lxn@cuit.edu.cn

更新日期/Last Update: 1900-01-01