Utilization of mudflats

The mudflat is an important reserve land resource in China, characterized by its large area, concentrated distribution, good locational conditions, and high potential for comprehensive development of agriculture, animal husbandry and fishery. Mudflat is a land-sea transition zone in dynamic change. To the land direction, through the reclamation, the introduction of fresh salt, can be quickly formed agriculture, animal husbandry and fishery livestock land; to the sea direction, can be further developed into the forefront of the development of the sea. Mudflats are an important base for aquaculture and agricultural production, and are a valuable asset for the development of the ocean and marine industry. Mudflats are not only an important land and spatial resource, but also contain a variety of minerals, living organisms and other marine resources. The utilization of mudflats is mainly reclamation. China advocates and encourages the use of beach reclamation in coastal areas to expand the area of arable land, but due to the serious lack of fresh water along the coast, the cost of transforming beaches into arable land is high and the benefits are low, and more and more beaches have lost their "original intention" of being used to make land and have become a "paradise" for sea-water aquaculture. More and more beaches have lost their "original intention" of being used for land cultivation and have become "paradise" for mariculture, which makes it difficult for the state's wish of reclaiming beaches for land cultivation or achieving a balance between land use and replenishment through reclamation to become reality. After the reclamation of the mudflat are saline land, transformed into arable land, need a large amount of fresh water after many years of flushing before it can be used for planting.

Coastal natural harbor and intertidal mudflats have traditionally been rich in biological resources, due to indiscriminate reclamation, these sites have been permanently destroyed; the self-purification capacity of the sea area declined, and pollution is serious. In the future, it will cost more money to govern than to reclaim the land; affecting the function of the harbor. This is mainly due to the serious siltation caused by the poldering. Experts have found that 10 years after the cofferdam is closed, the area of new siltation outside the embankment is equivalent to the original area of poldering, making the waterway shallower and narrower. There are also a number of sea works due to the need for reclamation, excavation and rock breaking, resulting in exposed mountains, in case of heavy rain, rolling turbidity into the sea, destroying the ecological environment of the sea.