分析黄河下游游荡性河道河势的时空演变规律，为进一步认识黄河下游河道演变特征，开展河道整治提供理论支撑和实践价值。在系统收集整理1960—2015年黄河下游游荡型河段典型断面的河势观测资料基础上，利用Mann-Kendall趋势检验和Fisher断点检验方法分析了1960—2015年黄河下游游荡性河道典型断面多年平均河宽及主流线迁移速率变化情况，结果表明：近60年黄河下游游荡性河道明显呈现出扩张段和收缩段交替出现，即在平面形态上呈藕节状分布，而其主流线调整速率的时空分布规律并不显著；黄河下游于店断面、禅房断面是平面藕节状分布的关键节点，将全河段划分为3段，第一段：铁谢至于店断面，河宽均值为1627m；第二段：于店至禅房断面，河宽均值为1477m；第三段：禅房至高村断面，河宽均值为1074m。该研究明确给出了黄河下游游荡段近60年河势整体演变情况。

Analyzing the spatiotemporal evolution law of the wandering channel in the lower Yellow River, which provides theoretical support and practical value for further understanding of the characteristics of the channel evolution in the lower Yellow River. Based on the systematic collection and arrangement of river regime observation data of typical sections of the wandering channel in the lower Yellow River from 1960 to 2015, with the Mann-Kendall trend test and Fisher breakpoint test method, the average river width and the migration rate of the main line of the wandering channel in the lower Yellow River from 1960 to 2015 were analyzed. The results show that in the past 60 years, the wandering channel in the lower Yellow River shows a clear manifestation. The expansion and contraction segments appear alternately, that is, they are distributed in the shape of a lotus on the plane, while the temporal and spatial distribution of the main line adjustment rate is not significant; the cross section of the lower Yellow River is the key node of the plane lotus-shaped distribution, the whole river channel is divided into three sections. The first reach, Tiexie—Yudian section, with the average river width of 1627m; the second reach, Yudian—Chanfang section, with the average river width of 1477m; the third reach, Chanfang—Gaocun section, with the average river width of 1074m. The study clearly shows the overall evolution of the river regime in the wandering section of the lower Yellow River in the past 60 years.

国家重点研发计划（2018YFC0407403）；国家自然科学基金资助项目(51709123)；中央级公益性科研院所基本科研业务费项目(HKY-JBYW-2018-03)Funds: National Natural Science Foundation of China for Youths (51709123); Special Basic Research Fund for Central Public Research Institutes (HKY-JBYW-2018-03)