CAJ | 학술논문

基于样本熵理论，选取宜昌站、汉口站和大通站为长江干流主要水文控制站，对3站的径流序列进行分析，研究长江干流径流序列复杂性的空间分布及动态变化特征。结果表明：长江干流径流序列复杂性具有明显的空间差异性，从上游到下游总体上呈现增加趋势。各站的样本熵值与年径流量均呈现负相关关系。宜昌站和大通站径流序列复杂性处于不断增加趋势，汉口站21世纪以来呈现增加趋势。
기우양본적이론，선취의창참、한구참화대통참위장강간류주요수문공제참，대3참적경류서렬진행분석，연구장강간류경류서렬복잡성적공간분포급동태변화특정。결과표명：장강간류경류서렬복잡성구유명현적공간차이성，종상유도하유총체상정현증가추세。각참적양본적치여년경류량균정현부상관관계。의창참화대통참경류서렬복잡성처우불단증가추세，한구참21세기이래정현증가추세。
Based on the sample entropy, this study analyzed the spatial distribution and dynamic change characteristics of the complexity of runoff series using long-term daily runoff data from the Yichang, Hankou, and Datong hydrological stations, which were determined to be the main hydrological control stations in the Yangtze River. The results showed that the complexity of runoff series showed obvious spatial differences and an increasing trend from upstream to downstream in the Yangtze River. There was a negative correlation relationship between the annual runoff and the sample entropy value at every station. The complexity of runoff series at the Yichang and Datong stations showed a continuous increasing trend, and an increasing trend after 2000 at the Hankou Station.