Current Situation of the Wetland
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Tiaozini is the first phase of Dongtai City’s one-million-mu tidal flat reclamation project, and also the start-up project for the construction of the one-million-mu tidal flat comprehensive development test zone in Jiangsu Province. The total area of Kuangwei is about 400,000 mu. In accordance with the requirements of the coastal development plan of Jiangsu Province, the reclamation of tidal flats is prioritized for the development of modern agriculture, the balance of arable land occupation and compensation, and ecological protection and construction, as well as for industrial development. The reclamation area has effectively promoted the decline of soil salinity through measures such as fresh water washing of salt, reapplication of organic fertilizer, winter planting of green manure, and emphasis on phosphate fertilizer input.

Tiaozini is located in the northeast corner of the coast of Dongtai City. It is named after its port branch is shaped like a strip. The total area of the area is about 500,000 mu. The Tiaozini Yellow Sea Ecological Zone involves China, North Korea, and South Korea. It has the world's largest intertidal wetland (3 million hectares). It is one of the most important coastal wetland ecosystems in the world, and it is also a migratory route for migratory birds from East Asia to Australasia. Key areas on the top. The Tiaozini Wetland is located on the south side of the Yellow Sea Ecological Zone. It is the largest coastal wetland on the west coast of the Pacific Ocean and the Asian continental margin. It is also the largest continuous subtidal muddy intertidal wetland in the Yellow Sea Ecological Zone.

On July 5, 2019, the 43rd World Heritage Conference passed the deliberation. As the core area of China’s Yellow (Bo) Sea Migratory Bird Habitat (Phase 1), Tiaozini Wetland has successfully become my country’s 14th World Natural Heritage Site, filling the entire country. The coastal wetland category world natural heritage gap and the Jiangsu province world natural heritage gap. The Yellow (Bo) Sea Migratory Bird Habitat (Phase 1) is divided into five areas, of which three areas (Dongtai Tiaozini Municipal Wetland Park, 12,746 hectares, Dongtai City, Tiaozini Wetland Protection Area, 1644,000 hectares, and Dongtai City’s high muddy mud beach small wetland area of 27,326.39 hectares) are located in the east coast of Taiwan, an area of 129 hectares, the total area of 45.6%

Tiaozini wetland, as an intertidal tidal flat, a silty silty coast, is periodically submerged by tidal water. It is the most ecologically valuable and biodiversity zone in the coastal zone. Due to the special geological structure, the Tiaozimu wetland has bred hundreds of species of benthic organisms, and is a natural spawning ground, breeding ground, feeding ground and bird habitat for economic organisms. The ecosystem services provided include: food sources, stabilization of the coast, prevention of storm events, protection of biodiversity, and often the center of social activities.

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From the perspective of the national economy

More than 100 kinds of fish, shrimps, crabs and abundant benthic organisms not only nourish many fishermen, but also provide a place for fishermen to survive and provide services for human beings.

From the perspective of biodiversity

It maintains the biodiversity of plants, water birds, molluscs, and fishes. It is one of the world’s 8 largest migratory bird migration routes, East Asian-Australasian Flyway (EAAF), with more than 200 species and a total of more than 200 species. Hundreds of thousands of migratory waterbirds provide habitat. These migratory birds migrate back and forth between the northern and southern hemispheres in spring and autumn. The Tiaozi Mud Wetland is an important transit point for migratory birds, just like a gas station on a highway. Especially for the world's critically endangered migratory bird Spoon-billed Sandpiper, the Spoon-billed Sandpiper is a small wading bird that only breeds in a very small number of frozen soils. The global population is estimated to be 360-600. Tiaozini wetland is an important feeding place and resting place. More than 50% of Spoon-billed Sandpipers from around the world will come here, foraging and moulting for up to 3 months. Therefore, the survival of this wetland is related to the survival of the Spoon-billed Sandpiper population.

From a geological point of view

The Tiaozini-Dongsha Shoal along the coast of Jiangsu is a unique geomorphic landscape along the coast of China. It not only has biological value as a habitat for migratory birds, but also has outstanding geological value due to the unique radial marine geological structure in the world.

Slivered Birds


Tiaozini wetland is a primitive and typical silty mud flat. Natural vegetation maintains a natural succession state and is rich in biodiversity. It has the world’s largest intertidal wetland and is one of the most important coastal wetland ecosystems in the world. It is also a resting place for millions of migratory birds on the East Asia-Australia migration route, one of the world’s eight largest migratory bird migration routes , Moulting grounds and wintering grounds.

There are 405 species of birds in the heritage area, which are divided into: migratory birds , represented by migratory birds from East Asia-Australia, such as spoon-billed sandpipers and small green shanks. Migratory birds, winter migratory birds represented by cranes, geese and ducks, such as rare birds such as red-crowned cranes, white cranes, oriental white stork , whooper swans, among them, red-crowned cranes attract the most attention; summer migratory birds represented by black- billed gulls. Resident birds are represented by Sinian finch, grey starling, and heron.

There are 17 species included in the IUCN Red List of Species: 1 critically endangered species (spoon-billed sandpiper); 5 endangered species ( black-faced spoonbill , eastern white stork, red-crowned crane, little greenshank, great sandpiper); 5 Species of vulnerable species ( yellow-billed egret , curly pelican , wild goose, widow gull, black- billed gull) and some near-endangered species (red-bellied sandpiper, half-webbed sandpiper, black-tailed sandpiper , white-rumped sandpiper , bar-tailed sandpiper Sandpiper , Sinian crow bird , curved-billed sandpiper , iron -billed sand plover, Mongolian sand plover, ruddy turnstone ).

Why do birds like sliver mud?

Tiaozini Wetland is located in the center of East Asia-Australia migratory bird migration route. It is an irreplaceable habitat for migratory bird migration, like a service area gas station on a highway.

It is located in the transitional zone from the subtropical zone to the warm temperate zone in my country. The geographical area crosses the two major divisions of Paleobec, Northeast Asia and Oriental Central India. The climate is suitable for birds to roost and stop, which is conducive to their growth and reproduction. The key station for bird migration.

According to research, the survival of several species of birds such as Spoon-billed Sandpiper, Little Greenshank, Great Sandpiper, and Great Whimbrel is very dependent on the Dongtai Coastal Wetland and its adjacent areas. The harmonious coexistence of man and nature makes this the most popular habitat for many endangered birds in the Yellow (Bo) Sea Wetland during the migration period, and it is a veritable "bird paradise".