Fig. 1. Location of the study area and sampling plots

Fig. 2. Soil sediment and erosion measuring device

Fig. 3. Temporal and spatial distribution of soil organic carbon contents of typical tidal creeks in the Yellow River Delta

Fig. 4. Temporal and spatial distribution of soil total nitrogen contents of typical tidal creeks in the Yellow River Delta

Fig. 5. Temporal and spatial distribution of carbon nitrogen ratio of typical tidal creeks in the Yellow River Delta

Fig. 6. Soil erosion deposition and erosion at different levels in typical tidal channel system of the Yellow River Delta in August and September

Fig. 7. Salinity of typical grade creeks in the Yellow River Delta in July, August and September

Fig. 8. The pH values of typical grade creeks in the Yellow River Delta in July, August and September

Fig. 9. Dry weight of plant litter in August and September in the typical tidal channel system of the Yellow River Delta

Fig. 10. Bulk density for typical tidal channel systems in the Yellow River Delta in July, August and September