| 黄河流域水资源演化模式分析 |
| |
| 引用本文： | 郑红星,刘昌明.黄河流域水资源演化模式分析[J].地理学报,2004,59(2):267-273. |
| |
| 作者姓名： | 郑红星 刘昌明 |
| |
| 作者单位： | 1. 中国科学院地理科学与资源研究所，北京 100101；
2. 北京师范大学环境科学研究所，北京 100875 |
| |
| 基金项目： | 国家重点基础研究发展规划项目(G19990436-01)~~ |
| |
| 摘 要： | 应用EMD-Hilbert变换方法分析花园口以上降水和天然径流近50年的资料系列。结果表明：黄河流域降水演化模式可由4个内在模函数以及一个单调递减的趋势项表示，而天然径流的演化则由3个基本模态和一个单调递减的趋势组成。黄河流域降水和天然径流的演化模式存在一定的相关关系，但两者之间并非一一对应的关系。从时间上看，不论是内在模函数还是趋势项，相对于降水，天然径流都表现出滞后的特点，一定程度上反映了下垫面调蓄作用对径流演化过程的影响。此外，从降水和天然径流内在模函数的周期可以推测黄河流域的水资源演化可能与大气低频振荡有关。
|
| 关 键 词： | EMD-Hilbert变换 水资源 演化模式 黄河流域 |
| 收稿时间： | 2003-08-15 |
| 修稿时间： | 2003年8月15日 |
On Evolution Modes of Water Resources in the Yellow River Basin |
| |
| ZHENG Hongxing,LIU Changming.On Evolution Modes of Water Resources in the Yellow River Basin[J].Acta Geographica Sinica,2004,59(2):267-273. |
| |
| Authors: | ZHENG Hongxing LIU Changming |
| |
| Institution: | 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
2. Institute of Environmental Sciences, Beijing Normal University, Beijing 100875, China |
| |
| Abstract: | The knowledge about evolution modes of water resources is important not only for hydrologists but also for water resources managers, especially for the Yellow River, which is suffering from water resources deficit. In this paper, analysis on evolution modes of water resources in the Yellow River Basin was carried out with the EMD-Hilbert Transform method based on precipitation and annual runoff of the past 50 years in the Huayuankou Station. The results have shown that the change of precipitation can be described by four intrinsic mode functions (IMF) and a decreasing tendency function, while the runoff series have been decomposed to 3 IMFs and also a decreasing tendency function. Comparing the evolution modes of annual runoff with that of annual precipitation, we have found that they were not changing in-phase, though there were some correlations between them. In the time scale, the change of runoff appeared to lag behind that of precipitation, which to some extent may due to the adjustment capacity of the underlying surface. In addition, according to periodicity of the IMFs, it can be inferred that the change of water resources in the Yellow River Basin may be due to QBO and ENSO events, which has called for further research work. |
| |
| Keywords: | EMD-Hilbert Transform water Resources evolution modes Yellow River Basin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地理学报》浏览原始摘要信息 |
| 点击此处可从《地理学报》下载免费的PDF全文 |
