Jiuduansha | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Chinese | 九段沙 | ||||||||||
Literal meaning | 9-part sands [1] | ||||||||||
| |||||||||||
Jiuduansha Wetland Nature Reserve | |||||||||||
Simplified Chinese | 九段沙 湿地 自然保护区 | ||||||||||
Traditional Chinese | 九段沙 濕地 自然保護區 | ||||||||||
|
Islands | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Shangsha | |||||||||||
Chinese | 上沙 | ||||||||||
Literal meaning | Upper [Jiuduan]sha | ||||||||||
| |||||||||||
Zhongsha | |||||||||||
Chinese | 中沙 | ||||||||||
Literal meaning | Middle [Jiuduan]sha | ||||||||||
| |||||||||||
Xiasha | |||||||||||
Chinese | 下沙 | ||||||||||
Literal meaning | Lower [Jiuduan]sha | ||||||||||
| |||||||||||
Jiangyanansha | |||||||||||
Simplified Chinese | 江亚南沙 | ||||||||||
Traditional Chinese | 江亞南沙 | ||||||||||
Literal meaning | Kiangya South [Jiuduan]sha | ||||||||||
|
Jiuduansha is a collection of four intertidal wetland shoals at the mouth of China's Yangtze River. They are administered as an island region of the municipality of Shanghai's Pudong New Area.
These shoals and the submerged land surrounding them to a depth of 6 meters (20 ft) form the Jiuduansha Wetland Nature Reserve. [2] The entire area stretches roughly 46.3 kilometers (28.8 mi) east to west and 25.9 kilometers (16.1 mi) north to south,covering an area of 423.5 square kilometers (163.5 sq mi), [2] although only 114.6 square kilometers (44.2 sq mi) of this is above sea level. [3] The area is considered one of the national urban wetland parks of China and forms part of the China Biosphere Reserve Network. A 1996 field study found that,for seven bird species investigated,the number present at Jiuduansha exceeded 1% of the world's total for the species,establishing it as a Wetland of International Importance. [4]
Although Jiuduansha literally translates as "Nine-Part Sands",the number nine is here being used in a colloquial way similar to English several. [5] In fact,the group consists of four main shoals. These are sometimes given their Mandarin names of Shangsha,Zhongsha,Xiasha,and Jiangyanansha [6] and sometimes translated as Upper,Middle,Lower,and South Jiuduansha. [2] South Jiuduansha is known as Jiangya Nansha in Chinese after the pinyin romanization of the SS Kiangya,the passenger steamer which exploded nearby (probably owing to a mine from the Second World War or the Chinese Civil War) in 1948.
Jiuduansha originally formed part of the Waitongsha shoal,but frequent floods of the Yangtze in 1949 and 1954 connected a series of troughs and separated Jiuduansha from the Tongsha shoal. [2] Shanghai's universities have studied Jiuduansha since the 1990s and,in 1995,introduced cordgrass in order to speed the shoal's stabilization, [7] particularly in light of roughly 71% reduction in sedimentation caused by the many dams erected along the course of the Yangtze during the 20th century. [8] In March 2003, [9] the Shanghai municipal government established the nature reserve. The cordgrass and environmental protection were intended to accommodate birds then living at the site being developed as Pudong International Airport. [5] From October 2002 to January 2003,Fudan University and the reserve's administration conducted four joint surveys [2] and,in 2005,the wetland was finally upgraded to a national nature reserve. [5] In the time since its introduction,the cordgrass has been found to have become invasive, [5] aggressively crowding out the native reeds and bulrushes [7] [8] and degrading parts of the wetlands. [5] A wetland museum,as well as a Science Popularization Park on about 5 square kilometers (1.9 sq mi) of the island,are planned to increase public awareness and support. [5]
Jiuduansha is the spawning ground for the hairy crab,one of the most important products of the Chinese fishing industry [10] and a delicacy of the cuisine of Shanghai and eastern China. [11] [12] The shoals also host large communities of Cipango and Siberian prawn and swimming crabs. [10] They are known to host 5 protected species of fish [13] and 14 protected species of birds,including the black-faced spoonbill. [4] All 14 observed species of aquatic mammals are protected and Jiuduansha is thought to be the most important habitat in China for the finless porpoise,the bottlenose dolphin,and the spotted seal. [14]
Yangtze or Yangzi is the longest river in Eurasia and the third-longest in the world. It rises at Jari Hill in the Tanggula Mountains of the Tibetan Plateau and flows 6,300 km (3,915 mi) in a generally easterly direction to the East China Sea. It is the fifth-largest primary river by discharge volume in the world. Its drainage basin comprises one-fifth of the land area of China,and is home to nearly one-third of the country's population.
Chongming District is the northernmost district of the provincial-level municipality of Shanghai. Chongming consists of three low-lying inhabited alluvial islands at the mouth of the Yangtze north of the Shanghai peninsula:Chongming,Changxing,and Hengsha. Following its massive expansion in the 20th century,Chongming is now the 2nd-largest island administered by the People's Republic of China and the 2nd-largest in Greater China,after Hainan. Chongming does not,however,administer all of the island:owing to its continual expansion from sediment deposited by the Yangtze,it has merged with formerly separate islands and now includes Jiangsu province's pene-exclave townships of Haiyong and Qilong. Chongming proper covers an area of 1,411 km2 (545 sq mi) and had a population of 637,921 at the time of the Census 2020.
Pudong is a district of Shanghai located east of the Huangpu,the river which flows through central Shanghai. The name Pudong was originally applied to the Huangpu's east bank,directly across from the west bank or Puxi,the historic city center. It now refers to the broader Pudong New Area,a state-level new area which extends all the way to the East China Sea.
Taicang is a county-level city under the jurisdiction of Suzhou,Jiangsu province,China. The city located in the south of the Yangtze River estuary opposite Nantong,being bordered by Shanghai proper to the south,while the river also delineates much of its northeastern boundary along Chongming Island.
Songjiang is a suburban district of Shanghai. It has a land area of 605.64 km2 (233.84 sq mi) and a population of 1,909,713 (2020). Owing to a long history,Songjiang is known as the cultural root of Shanghai.
The Chinese mitten crab,also known as the Shanghai hairy crab,is a medium-sized burrowing crab that is named for its furry claws,which resemble mittens. It is native to rivers,estuaries and other coastal habitats of East Asia from Korea in the north to Fujian,China in the south. It has also been introduced to Europe and North America,where it is considered an invasive species. The species features on the list of invasive alien species of Union concern. This means that the import of the species and trade in the species is forbidden in the whole of the European Union.
Chongming,formerly romanized as Chungming,is an alluvial island at the mouth of the Yangtze River in East China covering 1,267 square kilometers (489 sq mi) as of 2010. Together with the islands Changxing and Hengsha,it forms Chongming District,the northernmost area of the provincial-level municipality of Shanghai. At the time of the 2010 Chinese census,its population was 660,000.
The Shanghai maglev train (SMT) or Shanghai Transrapid is a magnetic levitation train (maglev) line that operates in Shanghai,China. The line uses the German Transrapid technology. The Shanghai maglev is the world's first commercial high-speed maglev and has a maximum cruising speed of 300 km/h (186 mph). Prior to May 2021 the cruising speed was 431 km/h (268 mph),at the time this made it the fastest train service in commercial operation.
Suparna Airlines,known in Chinese as Jinpeng,is an airline based in China. Originally an all-cargo airline,it was formerly known as Yangtze River Express and later Yangtze River Airlines after launching passenger services. The company's headquarters are in Shanghai Pudong Development Bank Tower in Pudong,Shanghai.
Yangcheng Lake is a freshwater lake about 3 km (1.9 mi) northeast of the city of Suzhou in Jiangsu Province,and ranges in depth from 1.5–2 m. The lake is 17 kilometers (11 mi) long from north to south,with an average width of 8 kilometers (5.0 mi) from east to west. It is the most famous area of origin for the Chinese mitten crab,which is considered a delicacy.
The Shanghai Yangtze River Tunnel and Bridge is a bridge–tunnel complex across the south fork of the Yangtze River near the river mouth in Shanghai. The tunnel connects the Pudong District of Shanghai on the south bank of the river with Changxing Island,while the bridge connects Changxing Island with Chongming Island. In combination with the Chongqi Bridge,which connects Chongming Island to the north bank of the Yangtze,the bridge–tunnel complex forms the final crossing of the Yangtze before it empties into the East China Sea.
The geography of Shanghai is characterised by its location on the Yangtze River Delta on China's east coast and its proximity to the Pacific Ocean via the East China Sea. The city is centred on the Huangpu River,a tributary of the Yangtze River,and extends outwards in all directions,with the suburbs and satellite towns reaching east to the East China Sea,north and west to Jiangsu province,and south to Zhejiang province over Hangzhou Bay.
The islands of Shanghai are those under the jurisdiction of the Shanghai municipal government. They comprise three large inhabited islands and a shifting number of smaller,uninhabited ones. Most are alluvial islands in the Yangtze River Delta in China,although a number of islands in Hangzhou Bay off Jinshan District are also administered by Shanghai. The alluvial islands are relatively young and their number varies over time. In 2006,the city's 19 uninhabited islands covered 226.27 square kilometers (87.36 sq mi),with a total coastline length of 309 kilometers (192 mi).
Hengsha is a low-lying alluvial island at the mouth of the Yangtze River in eastern China. Together with the islands of Chongming and Changxing,it forms Chongming District,the northernmost area of the provincial-level municipality of Shanghai. Its population was 33,400 in 2008.
Astrakhan Nature Reserve is a Russian 'zapovednik' covering an area including the islands and wetlands of the Volga Delta,where the Volga River enters the northwest sector of the Caspian Sea. The landscape is one of extensive reeds,cattails and willows and is an important nesting area for waterfowl and wading birds. The areas is rich in fish,with 50 species recorded,including beluga sturgeon. The reserve is situated in the Ikryaninsky District of Astrakhan Oblast. Since 1975,the territory has been part of a Ramsar wetlands site of international importance,and since 1984 it has been included in the World Network of Biosphere Reserves.
Haiyong is a town of Haimen District in Nantong,Jiangsu,China. Together with neighboring Qilong,it forms a pene-enclave of the province on Chongming Island,most of which belongs to the province-level municipality of Shanghai. Haiyong presently covers about 12.5 square kilometers (5 sq mi) and had a population of 5,004 during the year 2000 census.
Yonglongsha,sometimes translated as the Yonglong Shoal or Yonglong Sands,was a former island in the north channel of the Yangtze River to the north of Chongming in eastern China. It was also known as Yongfengsha and Hefengsha. Prior to its absorption by Chongming,it measured about 16 kilometers (9.9 mi) east to west but was very narrow,with an area of about 14 km2 (5.4 sq mi).
Qilong is a township of Qidong in eastern Jiangsu province. The land it occupies was formerly Yonglongsha,a separate island in the Yangtze River delta,but reclamation projects and natural deposition of sediment have joined it to Chongming Island,where it now forms a pene-enclave within Shanghai's Chongming County. Its population was 3436 at the time of the 2010 Chinese census. Qilong's name—literally "opening prosperity"—is a compound of contracted forms of its county and its former island.
Pulo Island,commonly known as Isla Pulo,is a long,narrow island surrounded by mudflats in the Manila Bay coast of Navotas,about 13 kilometers (8.1 mi) north of Manila in the Philippines. It is a sitio in Barangay Tanza,connected to the mainland of Navotas by a 500-meter-long (1,600 ft) bamboo bridge. The island is known for its mangroves for which it was declared a "marine tree park" and as one of four ecotourism sites in Metro Manila established under the National Ecotourism Strategy in 1999. In 2014,it was home to a resettlement site of about 137 indigent families that mostly occupied the island's southern tip.
Nenets Nature Reserve is a Russian 'zapovednik' in the northeast of European Russia on the coast of the Barents Sea and the delta of the Pechora River,about 800 km northeast of Arkhangelsk. With abundant wetlands,rivers,and sea islands,the reserve is an important point on the Atlantic migratory path for birds that winter in Western Europe and nest in the Eastern Europe and Western Siberian Tundra. Also present are large breeding grounds for the Atlantic Walrus. The reserve is situated in the Zapolyarny District of Nenets Autonomous Okrug. It was formally established in 1997,and covers and area of 313,400 ha (1,210 sq mi),of which 181,000 ha (700 sq mi) is over water.