This study investigates changes in channel morphology of the Cetina River over the last 130 years affected by climate changes and various human impacts. A detailed digitalisation and analysis of the channel features was performed by using historical maps from the 1880s, archival aerial images from the 1950/60s, and contemporary orthophoto maps from the 2010s. According to these sources, we defined three study periods, and distinguished changes in the pre-dam phase (1880s–1950/60s) and the post-dam phase (1950/60s–2010s). In the pre-dam phase, a partial channel narrowing and drying of marsh zones in the source area were recorded, possibly due to reduced humidity and discharge following the end of the Little Ice Age. A drop in discharge and an increase in sediment supply caused by agricultural intensification most probably affected the expansion of fluvial bars. The increase in sediment supply is particularly evident in considerable river delta progradation of 500 m during this period. In the last 50 years, five hydroelectric power plants were built in the catchment. Consequently, severe reductions in discharge led to channel narrowing by about 50% which occurred in the third of the river length. Apart from the dam construction, a reduction in the area of bars by 85% and an increase in the number of islands by 103% can be related to decreased sediment supply following land abandonment and natural reforestation. This study adds to the knowledge on river morphology and channel adjustments following natural and strong human disturbances in the Mediterranean environment.

这项研究调查了过去130年中塞蒂纳河河道形态的变化，这些变化受气候变化和各种人类影响的影响。通过使用1880年代的历史地图，1950/60年代的档案航拍图像和2010年代的当代正射影像图，对通道特征进行了详细的数字化和分析。根据这些资料，我们定义了三个研究时期，并区分了大坝前阶段（1880s–1950 / 60s）和大坝后阶段（1950 / 60s–2010s）的变化。在大坝前阶段，记录了源区沼泽地带部分通道变窄和干燥的情况，这可能是由于小冰期结束后湿度降低和排放减少所致。农业集约化造成的流量下降和沉积物供应增加最有可能影响河流条的扩张。在此期间，在500 m的明显河三角洲扩张中，沉积物供应量的增加尤为明显。在过去的50年中，该流域建造了5个水力发电厂。因此，排放量的严重减少导致河道变窄约50％，这发生在河流长度的三分之一处。除了修建水坝外，减少土地面积和自然植树造林后的泥沙供应量也与减少坝面积减少85％和增加岛屿数目增加103％有关。