Figure 12 Sketch of environmental reconstruction and management in floodplains
Due to the geomorphic features of various reaches of the lower Yellow River, different reaches should adopt diverse management methods according to the local conditions, as shown in Figure 13. The HYK-GC reach can be divided into two sections according to the characteristics of the river morphology. i) The HYK-DBT reach, with a wide floodplain area and high elevation and slight development of the secondary suspended river, is recommended to adopt the management mode of “high floodplain, secondary floodplain and new floodplain”. ii) The DBT-GC reach, also called the low floodplain, which has a high probability of overbank flooding and serious development of the secondary suspended river, is the key management area on the floodplain of the LYR; in this region, it is advisable to adopt the management mode of “high floodplain, secondary floodplain and new floodplain” or “secondary floodplain and new floodplain”.