The increasing number of visitors and conflicts resulting from shared use in valorising sensitive wetlands make effective visitor and site management measures essential. In the course of this research, the landscape pattern, the current spatial distribution of tourist activities and the possible arrangement of expedient further development were examined. The study area, Lake Tisza, is an artificial lowland reservoir established in the 1970s with an area of 127 km² in Hungary. Among its original functions, in addition to flood control, nature conservation and recreation have become the main profiles. The diverse hydro-ecological features and mosaic landscape structure allow for nature conservation and utilisation in tourism. This differentiated use is in line with the worldwide trend of favouring locations with multiple leisure activities in close proximity to each other. Based on the CORINE Land Cover (CLC) 2018 database, 12 different land use categories were identified in the study area. The largest proportion is represented by water bodies (53.29%), while inland marshes and broad-leaved forests cover 22.25% and 16.64%, respectively. The heterogeneity of the area is considerably enhanced by the high patch sizes of the categories pastures, broad-leaved forests and inland marshes. According to the Shannon diversity index, the most complex landscape diversity can be found in the Tiszavalk (1.5) and Poroszló (1.4) basins, considered to be the most suitable for ecotourism, while the lower values of the Sarud (1.1) and Abadszalók (1.1) basins provide suitable conditions for water sport activities and recreational tourism. Continuous adaptation to social needs and the joint protection of natural values is crucial for the sustainable development of Lake Tisza.

The active floodplain of the Gyüre in the upper Tisza River on the Bereg Plain in Hungary has a lot of different landforms, like meanders and natural levees. To understand how the sedimentation deposits in the Tisza River changed over time, we need to know how sediment builds up in this area. The aim of this study is to assess the sedimentation rate and analyze the distribution of ¹³⁷Cs in two vertically oriented paleochannels (the second and third meanders of the active Gyüre floodplain). We also intended to assess the influence of diverse geomorphological sites on sediment deposition. Satellite images and a LiDAR-based digital terrain model of the study area were used to choose the sampling points in order to ensure that the description of floodplain morphology to depth is accurateWe excavated four profiles for this research to a depth of 100-130 cm. Two in meanders (GYM3, GYM2) and two on natural levees (GYFH3, GYF2). Soil samples were collected at every 2 cm interval for high resolution. We characterized sediment samples by laboratory measurements, including particle-size distribution (Köhn pipette method), pH, EC, CaCO₃, and humus content (Tyurin method). Sequential framework created by measuring ¹³⁷Cs by gamma spectrometry at the HUN-REN Institute for Nuclear Research.The profiles' depth indicates different sedimentation processes between meanders and natural levees. The ¹³⁷Cs distribution in GYM3 and GYM2 (two meanders) indicates continuous vertical accumulation over the last approximately 70 years. We estimated the sedimentation rate for the third meander (GYM3) to be about 0.4 cm/year, and it is about 0.6 cm for the second meander (GYM2) annually. Conversely, the natural levee samples demonstrated minimal ¹³⁷Cs downward movement, and the peak concentration of ¹³⁷Cs was restricted to topsoil layers. There is no ¹³⁷Cs accumulation in the natural levee profile, and the maximum quantity in natural levee samples is probably driven by plant root activity and soil particles.In conclusion, the results indicate that the processes of sedimentation in the floodplain vary greatly from one place to another. Meanders are active sediment reservoirs that hold sediment at a rate of 0.4 to 0.6 cm per year. Natural levees stay pretty stable even though they don't get a lot of new sediment. The different levels of ¹³⁷Cs in meanders and the high levels of ¹³⁷Cs on the surface of levees show how important it is to do high-resolution radio-tracer studies of the different ways sediment builds up in the upper Tisza River floodplain.---Azin Rooien is funded by the Stipendium Hungaricum Scholarship under the joint executive program between Hungary and Iran.

River regulation and embankment construction have fundamentally altered the hydrological relationships and sediment accumulation dynamics of floodplains worldwide. This study examines the accumulation conditions in the Upper Tisza (Hungary) floodplain, focusing on the different surface development conditions of oxbow lakes and fossil natural levees following human intervention. During the study, we integrated high resolution LIDAR terrain models with detailed sedimentological analyses (grain size composition, pH, EC, OC, CaCO₃). We used multivariate statistical methods (principal component and cluster analysis) to separate soil formation processes and sediment accumulation. Based on our results, we identified sharp sedimentological boundaries indicating artificial meander cutting (1852). We demonstrated that the cut meanders function as sediment traps, where the accumulation of fine grained sediments is significantly faster (>0.34 cm/year) than on the higher elevation natural levees (0.1 cm/year). Statistical analysis identified five distinct sedimentation environments, successfully separating recent soil levels from river sediments. These results provide an important basis for the complex management of floodplains, such as flood protection, water retention, and habitat management planning.