The sediment connectivity index includes sediment load C7 and the sediment matching index C8. The latter is calculated by the radio sediment load and sediment transport capacity, which can reflect the erosion and deposition of the river channel. Therefore, the sediment load is more important than the sediment matching index. Thus, the value of the sediment load is 0.6, and the value of the sediment transport matching index is 0.4.
According to the hierarchical relationship of the channel connectivity index, the weight is obtained as shown in Fig. 2 (b), and the corresponding weight matrix is