Lop Nur

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لوپنۇر‎ᠯᠣ᠊ᠫ
ᠨᡇᡇᠷ, romanized: Lob nuur, from an OiratMongolic name meaning "Lop Lake", where "Lop" is a toponym of unknown origin [1] ) is a now largely dried-up salt lake formerly located in the eastern fringe of the Tarim Basin in the southeastern portion of the Xinjiang Autonomous Region, northwestern China, between the Taklamakan and Kumtag deserts. Administratively, the lake is in Lop Nur town (Chinese: 罗布泊镇 ; pinyin:Luóbùpō zhèn), also known as Luozhong (罗中; Luózhōng) of Ruoqiang County, which in its turn is part of the Bayingolin Mongol Autonomous Prefecture.

Contents

The lake system, into which the Tarim River and Shule River drain from the west and east respectively, is the last remnant of the historical post-glacial Tarim Lake, which once covered more than 10,000 km2 (3,900 sq mi) in the Tarim Basin but had progressively shrunk throughout the Holocene due to rain shadowing by the Tibetan Plateau. Lop Nur is hydrologically endorheic, it is landbound and has no outlet, and has relied largely on meltwater runoffs from the Tianshan, Kunlun and the western Qilian Mountains. The lake measured 3,100 km2 (1,200 sq mi) in 1928, but has dried up due to construction of reservoirs which dammed the flow of water feeding into the lake, and only small seasonal lakes and salt marshes may form. The dried-up Lop Nur Basin is covered with a salt crust ranging from 30 to 100 cm (12 to 39 in) in thickness.

An area to the northwest of Lop Nur has been used as a nuclear testing site. [2] Since the discovery of potash at the site in the mid-1990s, it is also the location of a large-scale mining operation. [3] There are some restricted areas under military management and cultural relics protection points in the region, which are not open to the public. [4]

History

Map of Lop Nur by Folke Bergman, 1935. Kara-Koshun where the terminal lake was found in 1867 is located to the south-west of Lop Nor, and the lake had shifted back to Lop Nor by the time this map was drawn. Taitema Lake was a smaller transit lake and located to the west of Kara-Koshun. Map of the Lop Nor region by Folke Bergman 1935.jpg
Map of Lop Nur by Folke Bergman, 1935. Kara-Koshun where the terminal lake was found in 1867 is located to the south-west of Lop Nor, and the lake had shifted back to Lop Nor by the time this map was drawn. Taitema Lake was a smaller transit lake and located to the west of Kara-Koshun.

From around 1800 BC until the 9th century the lake supported a thriving Tocharian culture. Archaeologists have discovered the buried remains of settlements, as well as several of the Tarim mummies, along its ancient shoreline. Former water resources of the Tarim River and Lop Nur nurtured the kingdom of Loulan since the second century BC, an ancient civilisation along the Silk Road, which skirted the lake-filled basin. Loulan became a client state of the Chinese empire in 55 BC, renamed Shanshan. Faxian went by the Lop Desert on his way to the Indus valley (395–414), [5] followed by later Chinese pilgrims. Marco Polo in his travels passed through the Lop Desert. [6] In the 19th century and early 20th century, the explorers Ferdinand von Richthofen, Nikolai Przhevalsky, Sven Hedin and Aurel Stein visited and studied the area. [7] It is also likely that Swedish soldier Johan Gustaf Renat had visited the area when he was helping the Zunghars to produce maps over the area in the eighteenth century. [8]

The lake was given various names in ancient Chinese texts. [9] In Shiji it was called Yan Ze (鹽澤, literally Salt Marsh), indicating its saline nature, near which was located the ancient Loulan Kingdom. [10] In Hanshu it was called Puchang Hai (蒲昌海, literally Sea of Abundant Reed) and was given a dimension of 300 to 400 li (roughly 120–160 km) in length and breadth, [11] indicating it was once a lake of great size. These early texts also mentioned the belief, mistaken as it turns out, that the lake joins the Yellow River at Jishi through an underground channel as the source of the river. [11] [12]

The lake was referred to as the "Wandering Lake" in the early 20th century due to the Tarim River changing its course, causing its terminal lake to alter its location between the Lop Nur dried basin, the Kara-Koshun dried basin and the Taitema Lake basin. [13] This shift of the terminal lake caused some confusion amongst the early explorers as to the exact location of Lop Nur. Imperial maps from the Qing dynasty showed Lop Nur to be located in similar position to the present Lop Nur dried basin, but the Russian geographer Nikolay Przhevalsky instead found the terminal lake at Kara-Koshun in 1867. Sven Hedin visited the area in 1900–1901 and suggested that the Tarim river periodically changed its course to and from between its southbound and northbound direction, resulting in a shift in the position of the terminal lake. The change in the course of the river, which resulted in Lop Nur drying up, was also suggested by Hedin as the reason why ancient settlements such as Loulan had perished. [14]

In 1921, due to human intervention, the terminal lake shifted its position back to Lop Nur. The lake measured 2400 km2 in area in 1930–1931. In 1934, Sven Hedin [15] went down the new Kuruk Darya ("Dry River") in a canoe. He found the delta to be a maze of channels and the new lake so shallow that it was difficult to navigate even in a canoe. He had previously walked the dry Kuruk Darya in a caravan in 1900.

In 1952 the terminal lake then shifted to Taitema Lake when the Tarim River and Konque River were separated through human intervention, and Lop Nur dried out again by 1964. In 1972, the Daxihaizi Reservoir was built at Tikanlik, water supply to the lake was cut off, and all the lakes for the most part then dried out, with only small seasonal lakes forming in local depressions in Taitema. [13] The loss of water to the lower Tarim River Valley also led to the deterioration and loss of poplar forests and tamarix shrubs that used to be extensively distributed along the lower Tarim River Valley forming the so-called "Green Corridor". In 2000, in an effort to prevent further deterioration of the ecosystem, water was diverted from Lake Bosten in an attempt to fill the Taitema Lake. [16] The Taitema Lake however had shifted 30 to 40 kilometres (19 to 25 mi) westwards during the past 40 years due in part to the spread of the desert. [17] Another cause of the destabilization of the desert has been the cutting of poplars and willows for firewood; in response, a restoration project to reclaim the poplar forests was initiated. [18] [19]

The Kara-Koshun dried basin may be considered part of the greater Lop Nur. [13]

On 17 June 1980, Chinese scientist Peng Jiamu disappeared while walking into Lop Nur in search of water. His body was never found, and his disappearance remains a mystery. On 3 June 1996, the Chinese explorer Yu Chunshun died while trying to walk across Lop Nur. [20] 40°10′N90°35′E / 40.167°N 90.583°E / 40.167; 90.583

Nuclear weapons test base

Mushroom cloud of the first Chinese nuclear weapon test, Project 596, at Lop Nur in 1964. 1965-01 1964Nian Shou Ci Yuan Zi Dan Bao Zha 3.jpg
Mushroom cloud of the first Chinese nuclear weapon test, Project 596, at Lop Nur in 1964.

Lop Nur, situated in the arid Xinjiang region of China's far west, serves as an extensive military base. This location was selected for nuclear testing due to its desolate and isolated nature, devoid of any permanent inhabitants, though the broader Xinjiang region is home to the Uyghurs, a predominantly Muslim ethnic group that has historically faced widespread detentions and stringent security measures in Xinjiang conflict. The Uyghurs have persistently voiced concerns regarding the health risks posed by the towering mushroom clouds and the release of radioactive fallout. [21]

China established the Lop Nur Nuclear Test Base on 16 October 1959 with Soviet assistance in selection of the site, with its headquarters at Malan (马兰, Mǎlán), about 125 kilometres (78 mi) northwest of Qinggir. [2] The first Chinese nuclear bomb test, codenamed "Project 596", occurred at Lop Nur on 16 October 1964. China detonated its first hydrogen bomb on 17 June 1967. Until 1996, 45 nuclear tests were conducted. These nuclear tests were conducted by dropping bombs from aircraft, mounted on towers, launching missiles, detonating weapons underground and in the atmosphere. [22]

In 2009, Jun Takada, a Japanese scientist, published the results of his computer simulation which suggests – based on deaths from Soviet tests – that 190,000 people could have died in China from nuclear-related illnesses. [23] Enver Tohti, an exiled pro-Uyghur independence activist, claimed that cancer rates in the province of Xinjiang were 30 to 35% higher than the national average. [24] On 29 July 1996, China conducted its 45th and final nuclear test at Lop Nor, and issued a formal moratorium on nuclear testing the following day, although further subcritical tests were suspected. [25] In 2012, China announced plans to spend US$1 million to clean up the Malan nuclear base in Lop Nor to create a red tourism site. [26]

In December 2023, a report emerged indicating that China was making preparations to resume nuclear tests in a remote desert. Satellite imagery provided evidence of these preparations, revealing the presence of a drilling rig that had created a deep vertical shaft. This shaft was believed to be designed to contain the destructive power of radiation resulting from large nuclear explosions. [21]

Further analysis of the satellite images since 2017 also uncovered the development of new infrastructure at the site. This included the construction of new roads, power lines, an electrical substation, and a support area with multiple buildings. What was once a modest site with only a few buildings had transformed into a modern and sophisticated complex, complete with security fences. One of the new structures was a bunker that was fortified with earthen berms and lightning arresters, indicating its suitability for handling high explosives. Tests on miniaturization of missiles and warheads can also be possibly carried out at this site. However, the Chinese Foreign Ministry has dismissed the report and its "utterly irresponsible" claims. China has denied any nuclear testing plans on the site. [21]

Ecology

Lop Nur is home to the wild Bactrian camel, which is a separate species from the Bactrian camel. The camels have continued to breed naturally despite the nuclear testing. China signed the Comprehensive Nuclear-Test-Ban Treaty in 1996 but did not ratify it. [27] Subsequently, the camels were classified as an endangered species on the IUCN Red List. [28] Since the cessation of nuclear testing at Lop Nur, human incursions into the area have caused a decline in the camel population. [28] [29] [30] Wild Bactrian camels have been classified as critically endangered since 2002 [28] and approximately half of the 1400 remaining wild Bactrian camels live on the former Lop Nur test base, which has been designated the Lop Nur Wild Camel National Nature Reserve.

Transportation

A highway from Hami to Lop Nur (Xinjiang Provincial Highway 235) was completed in 2006. [31]

The Hami–Lop Nur Railway, which runs 374.83 kilometres (232.91 mi) north to Hami, along the same route, opened to freight operations in November 2012. The railway is used to transport potassium-rich salt mined at the lake to the Lanzhou–Xinjiang railway. [31]

It is also served by the Hotan–Ruoqiang railway, which loops around the south and west side of the Tarim Basin, part of the Taklimakan Desert railway loop, joined together with sections of the Golmud–Korla railway, Kashgar–Hotan railway, and Southern Xinjiang railway. [32]

Archaeological sites

Mask from second millennium BCE EuropoidMaskLopNurChina2000-1000BCE.jpg
Mask from second millennium BCE

Given the extreme dryness and resulting thin population, remains of some buildings survived for a significant period of time. When ancient graves - some a few thousand years old - were opened, the bodies were often found to be mummified and grave goods well preserved. The earliest sites are associated with an ancient people of indigenous Siberian origin. [33]

Loulan

Loulan or Kroran was an ancient kingdom based around an important oasis city already known in the 2nd century BCE on the north-eastern edge of the Lop Desert.[ citation needed ] It was renamed Shanshan after Chinese took control of the kingdom in 1st century BCE. It was abandoned some time in the seventh century. Its location was discovered by Sven Hedin in 1899, who excavated some houses and found a wooden Kharosthi tablet and many Chinese manuscripts from the Jin dynasty (266–420). [14] Aurel Stein also excavated at the site in the beginning of the 20th century, while Chinese archaeologists explored the area in the latter part of the 20th century. A mummy called the Beauty of Loulan was found at a cemetery site on the bank of Töwän River.

Xiaohe Cemetery

The Xiaohe Cemetery is located to the west of Lop Nur. This Bronze Age burial site is an oblong sand dune, from which more than thirty well preserved mummies have been excavated. The entire Xiaohe Cemetery contains about 330 tombs, about 160 of which have been violated by grave robbers. [34]

A local hunter guided the Swedish explorer and archeologist Folke Bergman to the site in 1934. An excavation project by the Xinjiang Cultural Relics and Archaeology Institute began in October 2003. A total of 167 tombs have been dug up since the end of 2002 and excavations have revealed hundreds of smaller tombs built in layers, as well as other precious artifacts. In 2006, a valuable archeological finding was uncovered: a boat-shaped coffin wrapped in ox hide, containing the mummified body of a young woman. [35]

Qäwrighul

In 1979, some of the earliest of the Tarim mummies were discovered in burial sites at Qäwrighul (Gumugou), which is located to the west of Lop Nur, on the Könchi (Kongque) river. Forty-two graves, most of which dated from 2100 to 1500 BC, were found. There were two types of tomb at the site, belonging to two different time periods. The first type of burial featured shaft pit graves, some of which had poles at either end to mark east and west. Bodies were found extended, usually facing east, and sometimes were wrapped in wool weavings and wearing felt hats. Artifacts found included basketry, wheat grains, cattle and sheep/goat horns, bird bone necklaces and bracelets, nephrite beads, and fragments of copper (or bronze), although no pottery was discovered.

The second type of burial, from a later period, also consisted of shaft pit graves, surrounded by seven concentric circles of poles. Six male graves were found, in which the bodies were extended on their backs, and facing towards the east. Few artifacts were found, except for some traces of copper, or bronze. [36]

Miran

Miran is located to the south-west of Lop Nur. Buddhist monasteries were excavated here, and murals and sculptures showed artistic influences from India and Central Asia, with some showing influences from as far as Rome.

See also

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References

  1. ↑ Barber, Elizabeth (2000). The Mummies of Urümchi. W. W. Norton & Company. p. 125. Two groups have laid claim to nor, the second half of Lop Nor. Nor is Mongol for 'lake' and occurs as part of many lake names in Xinjiang and other parts of Central Asia, while nur is Uyghur for 'bright' (as in the white of the salt flats). Mongol probably wins this one. But lop is opaque in both languages and in Chinese too, a fact suggesting that the name goes back to a time before Turks, Mongols, or Chinese had entered the territory.
  2. 1 2 "Lop Nor Nuclear Weapons Test Base". nti. Retrieved 3 August 2007.
  3. ↑ "Lop Nur, Xinjiang, China". Earth Observatory. 19 June 2011.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  4. ↑ 三问哈罗铁路. Sina Weibo . 《新疆哈密广播电视报》. 6 December 2012.
  5. ↑ Fa-hsien; Legge, James (1886). A record of Buddhistic kingdoms; being an account by the Chinese monk Fâ-Hien of his travels in India and Ceylon, A.D. 399-414, in search of the Buddhist books of discipline. Translated and annotated with a Corean recension of the Chinese text. Robarts – University of Toronto. Oxford Clarendon Press.
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  7. ↑ "The Wandering Lake". NASA. Archived from the original on 16 April 2002. Retrieved 3 August 2007.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  8. ↑ Strindberg, August. "En svensk karta över Lop-nor och Tarimbäckenetb" (in Swedish). Archived from the original on 28 September 2007. Retrieved 16 August 2007.
  9. ↑ Zizhi Tongjian Original text: 蒲昌海，一名泑澤，亦名鹽澤，亦名輔日海，亦名穿蘭，亦名臨海，在沙州西南。Translation; Puchang Hai, another name is You Ze, also called Yan ze, Furi Hai, Chuan Lan, and Lin Hai. It is located to the south-west of Shazhou (Dunhuang).
  10. ↑ Shiji Original text: 而樓蘭、姑師邑有城郭，臨鹽澤。Translation: The cities of Loulan and Gushi have walls; they lie near to Yan Ze.
  11. 1 2 Hanshu Original text: 蒲昌海，一名鹽澤者也，去玉門、陽關三百餘里，廣袤三四百里。其水亭居，冬夏不增減，皆以為潛行地下，南出於積石，為中國河雲. Translation: Puchang Hai, also named Yan Ze, lies over 300 li from the Yumen and Yangguan Pass, and is 300 to 400 li in length and breadth. Its waters are stagnant, and do not increase or decrease during the winter or summer. It is generally believed that the water flows hidden underground, emerges south at Jishi, and becomes the Chinese River (meaning Yellow River).
  12. ↑ Lou Yulie, ed. (17 September 2015). Buddhism. Brill. p. 270. ISBN   9789047427971.
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  15. ↑ Sven Hedin, The Wandering lake, 1940. The river was also called the Kum Darya (Sand River). The Gizi map of Xinjiang calls it the Konche, which is probably a mistake.
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  20. ↑ "Found Dead – Yu Chunshun, 48, Intrepid Chinese explorer". asiaweek.com. Retrieved 18 September 2007.
  21. 1 2 3 Broad, William J.; Buckley, Chris; Corum, Jonathan (20 December 2023). "China Quietly Rebuilds Secretive Base for Nuclear Tests". The New York Times. Retrieved 22 December 2023.
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  24. ↑ Zeeya Merali (8 July 2009). "Did China's Nuclear Tests Kill Thousands and Doom Future Generations?". Scientific American. Retrieved 27 October 2012.
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  26. ↑ "China to open ex-atomic site to tourists". Beijing: United Press International. 17 October 2012. Retrieved 27 October 2012.
  27. ↑ Borger, Julian (16 April 2020). "China may have conducted low-level nuclear test, US report claims". The Guardian. ISSN   0261-3077 . Retrieved 23 April 2020.
  28. 1 2 3 Hare, J. (2008). "Camelus ferus". IUCN Red List of Threatened Species . 2008. doi: 10.2305/iucn.uk.2008.rlts.t63543a12689285.en .
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  30. ↑ "Wild Camel". Wild Camel Protection Foundation.
  31. 1 2 China starts building railway into "sea of death" Archived 2012-02-29 at the Wayback Machine , gov.cn, Thursday, 4 March 2010
  32. ↑ Zhang, Kate (17 June 2022). "New railway completes 2,700km loop of Taklamakan Desert in move to integrate Xinjiang with rest of China". South China Morning Post.
  33. ↑ "The genomic origins of the Bronze Age Tarim Basin mummies", Zhang et al. 2021, Nature, https://pmc.ncbi.nlm.nih.gov/articles/PMC8580821/
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  35. ↑ "Silk Road Documentary Unearths Latest Findings". china.org.cn. Retrieved 18 September 2007.
  36. ↑ Kwang-tzuu Chen and Fredrik T. Hiebert (1995). "The Late Prehistory of Xinjiang in Relation to Its Neighbors". Journal of World Prehistory9 (2): 243–300.
Lop Nur
Basin of Lop Nur 90.25E, 40.10N, Desert of Lop, Kum Tagh and Astin Tagh.jpg
Satellite picture of the Basin of the former sea of Lop Nur; the concentric shorelines of the vanished lake are visible.
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Lop Nur
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Location of Lop Nur within Xinjiang
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Lop Nur
Lop Nur (China)
Transcriptions
Latin Yëziqi Lopnur
Yengi Yeziⱪ Lopnur
Siril Yëziqi Лопнур
Five Great Lakes
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Notable freshwater lakes
Notable salt lakes
National Parks
Protected wetlands
Nature Reserves
Major urban lakes
Reservoirs
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