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”.