Research on the Variation Characteristics of Runoff in the Middle and Lower Yellow River during the Last 50 Years
Taking the 54 years (1950～2003) monthly runoff series measured in both Huayuankou and Lijin hydrologic stations as the basic series data, and both wavelet analysis (WA) method and time-series analysis methods are used, the variation characteristics of runoff in the middle and lower Yellow River during the last 50 years have been analyzed and described comprehensively from four points as; variations under different time-scales, inner-annual variation, inter-annual variation and spatial variation. Then the influence of human activities on variation characteristics of runoff have also been studied and discussed. Analyses results show that human activities have great influence on the variation characteristics of runoff in the last 50 years, which make the characteristics of runoff have been changed greatly after 1970, make the runoff reducing along with year, and change the inner-annual distribution of runoff.
the Yellow River hydrologic time series runoff wavelet analysis periods
Sang Yanfang Wang Dong Wu Jichun Song Shengli Zhu Qingping Wang Ling
State Key Laboratory of Pollution Control and Resource Reuse, Department of Hydrosciences, School of China Water International Engineering Consulting Co. Ltd, Beijing ,100053, China Hydrology Bureau of Yellow River Conservancy Commission of Ministry of Water Resources, Zhengzhou, 4
国际会议
郑州
英文
1930-1938
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）