Pondering on Issues of the Yellow River Estuary

The paper analyzes on the issues of flow path at the estuary of the Yellow River and estuary ecological environmental protection. It is considered after analyzing that the key of flow path arrangement at the estuary is to well handle the relationship among flood control, economic development and ecological environmental protection of the estuary; and long -term fixing the flow path into the sea is unfavorable to ensuring the safety of the estuary and flood control of the lower reaches and unfavorable to ecological environmental protection. The way of solving is to make flow path wandering in a planned way. The conditions of reduction of coming water and sediment, the relatively better sea area near the estuary, the matured measures on controlling sedimentation at estuary and strengthened building of flood control structures have become favorable to stabilize the flow path and extending the service life of Qingshuigou Flow Path has become possible. While, we should fully recognize the facts that the serious sedimentation would be happened at estuary if runoff and sediment were less, the possible potentialities and limitation of various sediment reduction measures used for the estuary. How to protect ecological environment of the estuary region is the key issue of whether the water resources of the Yellow River can be optimally allocated. Therefore, it should study the issues of ecological environmental scope and objectives that human hope to safeguard and possibly can safeguard and how much fresh water needed for the relevant rehabilitation aim. The economic development mode of estuary region must be established on the conditions of insufficient water resources and put ecological environmental protection into a very important place. Social and economic sustainable development can be guaranteed only people get on well with the nature.