What is Yancheng, Jiangsu?

Yancheng, located on the coast of the Yellow Sea, is the largest marine city in Jiangsu Province, with a coastline of 582 kilometers, accounting for 6 1% of the whole province's coastline. Among the nine counties (cities, districts) under its jurisdiction, five counties (cities) such as Dongtai, Dafeng, Sheyang, Binhai and Xiangshui are near the sea. Historically, the Yellow River has been in Yancheng for more than 700 years. Together with the Yangtze River, it has accumulated a lot of sediment along the coast, creating a vast coastal plain. The interaction between land and sea forms a diverse and unique ecological environment of coastal beaches, which makes the natural resources here have the characteristics of various types, large reserves and high development and utilization value.

Land resources are unique. There are 4,559 square kilometers of coastal beaches to the east of the seawall built in 1950s, which is 4.26 times that of Hong Kong, accounting for 70% of the tidal flat area in Jiangsu Province and 1/7 of the national tidal flat area. Because the Yangtze River continuously transports sediment to the sea, part of it is deposited in the coastal area of Yancheng, and the tidal flat area of Yancheng is continuously deposited into the sea at the rate of increasing 1.300 hectares of land every year. According to the characteristics of natural landforms, the coastal beaches in Yancheng City are divided into three parts: supratidal zone, intertidal zone and offshore radial sandbar. Among them, the zone between the old seawall and the average high tide level is the supratidal zone, with a total area of 1677 square kilometers; The intertidal zone is between the average high tide level and the low tide line, with a total area of 16 14 square kilometers; In the shallow sea area east of Gangzhen, Dongtai City, there are more than 70 radiation sandbars, such as Dongsha, which radiate from the port to the east and southeast, with a total area of 1.268 square kilometers. This natural phenomenon is rare in the world. Yancheng coastal beach belongs to muddy coast, with flat terrain, superior natural properties, rapid natural desalination and natural evolution of halophytes, which is a endowed land with great development potential. Mr. Li Zhensheng, former vice president of China Academy of Sciences, came to Yancheng coastal beach and found that "Yancheng coastal beach is the first choice for increasing cultivated land and increasing the effective supply of grain, cotton, oil and meat in China."

There are many kinds of biological resources. Yancheng has vast coastal beaches and lush natural vegetation. 10 More than 0 rivers enter the sea through the beach, and the offshore water quality is fertile, which is a good place for all kinds of plants to grow and all kinds of animals to inhabit, feed, reproduce and grow. At present, more than 60 species of phytoplankton and sessile plants have been identified in the offshore area. Terrestrial resources plants can be divided into five categories: fiber, medicine, spice, oil and feed, accounting for more than 500 species, belonging to 100 species and more than 400 genera. More precious are Polygonum Multiflori Radix, spearmint, Apocynum venetum and citronella. There are more than 550 species of fish, shrimp, crab and shellfish in offshore and intertidal zones, among which there are many rare species. The reserve of molluscs in intertidal zone exceeds 40,000 tons. The main economic species are Meretrix meretrix, Meretrix meretrix and Bullacta exarata. At that time, it was praised by Emperor Qianlong as "the freshest in the world", with large reserves and high economic value. There are also Meitong fish, hairtail, large yellow croaker, four-gill perch, swimming crab, prawn, and prawn. The output of eel fry with high economic value ranks first in China, with an average annual catch of 7 tons, reaching 15 tons in the highest year. There are 357 species of terrestrial vertebrates, and internationally recognized endangered species include red-crowned crane, black-billed gull, white-billed gull, white stork, white-naped crane and so on. Two nature reserves, Red-crowned Crane and Elk, covering an area of 1 .2000 hectares, have been established on the tidal flat, and the number of red-crowned cranes coming here for the winter has increased from more than 300 to more than1000 every year, accounting for about half of the world total. The 39 elk brought back from England have multiplied to more than 400, becoming the largest wild stocking population in the world.

Light and hot water conditions are superior and unique. Yancheng tidal flat is located in the humid monsoon climate zone which transits from the north subtropical zone to the warm temperate zone. It is obviously influenced by the maritime climate, with mild climate, sufficient light and heat, long frost-free period and the same season of rain and heat. The annual average temperature is 65438 0.4 degrees, the annual sunshine is 2300 hours, the annual rainfall is about 65438 0.000 mm, and the frost-free period is 220 days. It belongs to a multi-suitability climate, which is beneficial to soil desalination and improvement, and also provides conditions for the growth and development of animals and plants, wintering in summer, high quality and high yield. Yancheng coastal beaches are rich in fresh water resources, including sea salt, mariculture and marine biochemistry. The territory belongs to the Huaihe River system and Yishu River system, with dense river networks and an average annual precipitation of 6.5 billion cubic meters. The total amount of surface runoff and transit water resources can meet the development needs, and there is basically no water shortage in normal and general dry years.

Port and shipping resources have great potential. Yancheng has 12 seaports. According to expert certification, most of the coastal waters of ports are wide and deep, with good straight bottom, no ice all the year round, small waves, good berthing conditions and little influence from typhoons and sea fog. Most coastal areas are vast in land, rich in port construction land and good distribution conditions, and 554.38+10,000 yuan can be built in many places. Guanhe, located in Xiangshui County, is known as "Huangpu River in Jiangsu Province". It is the only river in northern Jiangsu that is not closed by a sluice. The harbor is wide and deep, and the riverbed has little change in erosion and deposition. Since ancient times, it has been a channel for Huai salt to go to sea. At present, Chenjiagang, Binhai Port, Sheyang Port and Dafeng Port are all under construction.